STJグループ（株式会社サンテレコムジャパン、株式会社STJレンテック） List of Products and Services

"Marumo" (Comprehensive Mobile Business Support Service) is a unique BPO service from Santelecom Japan. It makes managing corporate mobile phones and smartphones much easier. It provides strong support for security enhancements and in case of loss. We offer operational support for BPO services aimed at corporate mobile phones. Dedicated staff will respond quickly, no matter where you are in the country. [Features] - Support via a free call number (incoming calls only) and a dedicated email address - Bulk management and operation with dedicated software - iOS repairs are also supported - Nationwide service - Consistent support from dedicated staff - Same-day response for lost devices *For more details, please refer to the PDF document or feel free to contact us.

MDM "OPTiM Biz" is an MDM developed by Optim Corporation and supports multi-device management. MDM (Mobile Device Management) is a system designed to efficiently manage mobile devices such as smartphones and tablets, enhancing security. Implementing MDM in the operation of smart devices within a company is a crucial point for preventing information leaks. 【Features】 - No server setup required - Centralized management of devices - Multi-device support - Device locking in case of loss or theft - Automatic checks for security violations - Restrictions on non-business applications *For more details, please refer to the PDF document or feel free to contact us.

"STJ Fault Support (i) 1 Year" is a corporate mobile phone and smartphone insurance that fully covers repair costs for smartphone accidents such as water damage, breakage, and malfunction. *Devices purchased from Santelecom Japan are eligible for coverage. It provides coverage for repair costs due to malfunction, breakage, or water damage for iOS devices (iPhone, iPad) up to twice a year. With a contract for Santelecom Japan's BPO services, you can rest assured during the repair process. The repaired items will be ready for immediate use upon delivery. 【Features】 ■ Repaired items are returned after kitting ■ Custom repair flow construction for your company is possible ■ Management can be centralized even if the contracted communication providers are different ■ Covers water damage, breakage, and malfunction *For more details, please refer to the PDF document or feel free to contact us.

"STJ Rental Wi-Fi" is a rental Wi-Fi service for businesses that supports high-capacity communication. With a simple monthly plan design, it is ideal for short-term use at events and exhibitions. There are no administrative fees or equipment costs, and there are no usage limits based on the number of days. Thanks to cloud Wi-Fi technology that automatically connects to three carriers (docomo/au/SoftBank), it provides a communication environment suited to the location of use. Remote work and video streaming can be conducted smoothly. 【Features of the newly launched BCP plan】 ■ Low price └ 1,000 yen/month for usage up to 1GB └ 1,500 yen/month for usage up to 3GB ■ Provides stable communication with automatic connection to three carriers ■ Immediate use available when needed ★ A no-commitment 100GB plan (4,000 yen/month) is also available! *For more details, please refer to the materials. Feel free to contact us with any inquiries.

"STJ Rental Wi-Fi 100" is a corporate cloud Wi-Fi service that automatically connects to the most suitable network among the three major mobile carriers. It can be used immediately when needed, with the fastest shipping available on the same day after application. Once it arrives, you can start using it right away. Short-term rentals are available from one month, and with our service, you can contract for only the necessary period to keep costs down. 【Features】 ■ Reliable connectivity with cloud Wi-Fi ■ Automatically connects to the most suitable network among the three major mobile carriers ■ Ideal for spot usage, ready to use when needed ■ Rental available from one month ■ Simple and straightforward plan *For more details, please download the PDF or feel free to contact us.

The premium internet service provided by "USEN GATE 02" is an ultra-fast internet service with speeds of up to 10Gbps. Unlike shared fiber optics used by multiple users, the premium internet offers a dedicated line service that provides a direct fiber optic connection to each customer, ensuring stable communication. By using a dedicated line, the service is less affected by other users, resulting in stable communication and the ability to create a comfortable internet environment. 【For those with the following concerns】 ■ Haven't reviewed the network in a long time ■ Increased web meetings compared to before ■ Complaints about slow internet from within the company ■ Recently implemented remote work ■ Actively using cloud services *For more details, please refer to the related links or feel free to contact us.

"KDDI SMART Address Book" is a business-oriented cloud address book service that can be used from smartphones and PCs. It is specifically designed for business use, offering robust features for administrators such as permission settings, access restrictions, and bulk import functionality for address books. It can be used on PCs and smartphones, allowing users to switch between devices according to their usage scenarios. 【Features】 ■ Address book sharing ■ Comprehensive features to reduce management burden ■ Available on multiple devices *For more details, please refer to the PDF document or feel free to contact us.

"LINE WORKS" is a business chat tool that can be used with peace of mind for work. It allows communication not only among company members but also with clients and customers, and you can interact with customers who do not use this service via LINE. With a familiar interface and features, anyone can start chatting right away, and with over 1,000 types of rich stickers, feelings can be conveyed even in business. The read confirmation feature allows you to check which members have read or not read the messages. [Features] - Account management is secure - Communication is possible with stickers and short messages - The read function allows you to see who has viewed the messages *For more details, please refer to the PDF document or feel free to contact us.

The "DIGNO(R)SX3" is a rugged 5G smartphone equipped with a large-capacity battery. Thanks to the device's heat dissipation technology, it keeps the temperature rise in check, allowing for comfortable use even during long calls or remote meetings. You can feel secure even when you can't fully charge the device during sudden business trips. 【Features】 ■ Long-lasting use with a 4,500mAh large-capacity battery ■ Complies with 20 MIL standards ■ Device management features to meet customer needs ■ Safe management with Android Enterprise Recommended compliance *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "iPhone 16 Pro for Corporations" that we handle. The bezels are extremely thin, and the expansive display provides a clearer view, featuring a highly durable titanium design. Additionally, the battery lasts even longer, allowing for 27 hours of video playback. With satellite communication-enabled emergency SOS and collision detection features, it provides a means to seek help even outside of cellular coverage. 【Features】 ■ Apple Intelligence ■ Smooth camera operation ■ Equipped with A18 Pro chip ■ 4K120fps Dolby Vision ■ 48MP ultra-wide camera *For more details, please download the PDF or feel free to contact us.

We would like to introduce the "iPhone 16 for Corporations" that we handle. Designed for high durability and colorful aesthetics, ensuring long-lasting beauty. Camera operation is simple, allowing for perfect shots with minimal actions. Additionally, the battery has been further enhanced, and with the A18 chip, it achieves overwhelming speed and intelligence. 【Features】 ■ Ultra-wide camera ■ Further enhanced battery ■ Overwhelming speed and intelligence with the A18 chip ■ Instant access to necessary operations with the action button ■ Emergency SOS and collision detection features with satellite communication support *For more details, please download the PDF or feel free to contact us.

Our company offers the 'iPhone 16e' as a corporate mobile phone and corporate smartphone. Designed to make the most of Apple Intelligence, this personal AI strongly supports tasks such as writing and task efficiency. You can create your own emojis and freely edit photos with the "cleanup" feature. The body is made of high-strength aluminum material, achieving a tough structure that can withstand daily impacts and accidents. It provides solid protection against everyday little mishaps. 【Features】 ■ Optimized for Apple Intelligence ■ Tough and refined design ■ Industry-leading durability ■ Action button for various operations with one push ■ Versatile USB-C port *For more details, please download the PDF or feel free to contact us.

The "TORQUE G06" is a product with overwhelming durability and a tough body that can handle various scenes. It has undergone drop tests on a heavily textured knurling that is more uneven than sandpaper, as well as impact tests on the screen using a pointed notch. The durability, which has cleared a record 29 tests in TORQUE history, expands the range of activities for your business. 【Features】 ■ Exceptional durability ■ Supports eSIM/Dual SIM ■ Triple camera ■ Accessories (sold separately) that broaden business use cases *For more details, please download the PDF or feel free to contact us.

The "Google Pixel 7a" is a business-oriented smartphone that improves speed, efficiency, and security compared to its predecessor, the Google Pixel 6a, by incorporating the Google-designed Google Tensor G2 chip. This chip is also used in the Google Pixel 7 and Google Pixel 7 Pro, and with enhanced AI capabilities, it achieves improvements in call voice quality, extended battery life, and enhanced photo and video quality through blur correction. To protect users and sensitive information, Google Pixel provides a minimum of five years of security updates and continuously applies advanced security updates to enhance safety. 【Five Recommended Points】 ■ Intelligence ■ High-security features ■ Long-lasting battery ■ Convenient features ■ Environmentally conscious product development *For more details, please download the PDF or feel free to contact us.

The "Galaxy A23 5G" is a simple and comfortable 5G business smartphone that propels your business forward. It is equipped with a MediaTek Dimensity 700 CPU (2.2GHz/2 + 2.0GHz/6 = 8 cores). Additionally, it supports external memory with a microSDXC card of up to 1TB, allowing you to store a large amount of data such as on-site photos and meeting recordings. 【Features】 ■ Easy to use ■ Functions that ensure "better safe than sorry" ■ Easily and quickly transfer important data *For more details, please download the PDF or feel free to contact us.

The "DIGNO(R) Tab KYT34" is a durable and convenient business tablet that promotes DX (digital transformation) for companies. It has waterproof performance rated IPX5/IPX8 and dustproof performance rated IP6X. It is designed for work in environments such as water-related tasks, outdoor work during sudden rain, and facilities like factories with a lot of dust. It can be easily wiped clean with alcohol disinfectant wipes, making it hygienic to use. It is suitable for professions and places where cleanliness is important. 【Features】 - Durability designed with consideration for diverse business uses and locations, with reliable domestic design and production - Functionality designed with on-site use in mind - Comprehensive charging solutions - Android Enterprise Recommended compliant - Device restriction app specialized for corporate use (Device Control app) *For more details, please download the PDF or feel free to contact us.

The "Lenovo Tab M10a 5G" is a 5G-compatible tablet for businesses that features a Snapdragon(TM) 695 CPU. In 5G areas, it enables high-speed communication, making video conferencing and watching videos comfortable. It comes with 4GB of RAM, allowing the simultaneous use of multiple business applications. Additionally, it supports 64GB of ROM storage and is compatible with a 1TB microSDXC(TM) card, enabling the storage of large amounts of data. 【Features】 ■ Sturdy dustproof and waterproof design ■ Full HD, narrow bezel ■ Smooth visuals that are easy to see from any angle ■ Reading mode ■ Split-screen function, floating mode *For more details, please download the PDF or feel free to contact us.

The "DIGNO Tab2 5G KYT35" is a 5G-compatible tablet that strongly supports business operations. It can handle NFC reading and payments without the need for an external reader, and it is equipped with reliable durability and comprehensive business functions for on-site use. Additionally, it supports Dual SIM with both physical SIM and eSIM, allowing multiple networks to be utilized on a single tablet. This enables communication redundancy and can be effectively used as a BCP (Business Continuity Plan) measure. 【Features】 ■ Handles NFC reading and payments without an external reader ■ Reliable durability and comprehensive business functions for on-site use ■ Streamlining of management tasks and robust security measures *For more details, please download the PDF or feel free to contact us.

The "Speed Wi-Fi 5G X12" is a pocket-sized WiFi device that supports 5G and Wi-Fi 6, enabling high-speed and stable wireless communication. It is compatible with WPA3, the evolved version of WPA/WPA2. While maintaining compatibility with WPA2, it features enhanced security measures. Additionally, it has a lightweight and easy-to-hold body, equipped with a 4000mAh battery, allowing for approximately 9 hours of continuous communication while on the go. 【Features】 ■ Supports 5G networks and Wi-Fi 6 ■ Compatible with the advanced Wi-Fi security standard WPA3 ■ Long-lasting battery and lightweight, easy-to-hold body ■ Easy to configure various settings ■ Improved functionality *For more details, please download the PDF or feel free to contact us.

The "GRATINA (KYF44)" is a mobile phone designed for businesses, equipped with high-quality call capabilities and a reliable recording function. If there are two or more missed calls from the same person within 10 minutes, the ringtone will gradually increase in volume, and the vibration duration will be extended. Additionally, without the need for earphones or conversion cables, you can listen to the radio within the broadcast area by simply touching the bottom of the device. This feature allows you to obtain useful information during emergencies, such as disasters. 【Features】 ■ Advanced call functions to ensure you never miss important calls ■ Durable and hygienic, providing comfortable use over time ■ Smart features and peripherals that evolve your work style *For more details, please download the PDF or feel free to contact us.

Santelecom Japan, as a top-class agency in KDDI's Kanto corporate sales division, has dedicated representatives who will provide clear and courteous assistance even to first-time customers. A corporate contract refers to applying for a contract under the name of a corporation, such as a stock company or a limited company. Our company offers "special corporate prices" for all scenarios including "new contracts," "device changes," and "switching from other companies." 【Benefits】 ■ Reduction of communication costs such as calls and internet ■ Improved business efficiency with suitable options and plans ■ Centralized management of employee mobile data ■ Increased employee satisfaction *For more details, please refer to the PDF document or feel free to contact us.

We would like to introduce the "Corporate Mobile and Corporate Smartphone Rate Plan List" that we handle. The "Smartphone Start Plan Basic 5G/4G" is a recommended plan for those using a smartphone for the first time, allowing data communication of up to 30GB. In addition, we also offer various plans such as the "Smartphone Start Plan Light 5G/4G," "Unlimited MAX 5G/4G," and "Smartphone Mini Plan 5G/4G." 【Plan Lineup】 ■ Smartphone Start Plan Basic 5G/4G ■ Smartphone Start Plan Light 5G/4G ■ Unlimited MAX 5G/4G ■ Smartphone Mini Plan 5G/4G *For more details, please download the PDF or feel free to contact us.

Smartphones and mobile phones have become indispensable tools in business. However, there are many specialized terms that are emerging, and while we may have a general understanding of their nuances, we often do not know their true meanings. This smartphone glossary primarily picks up and lists terms that you might hesitate to ask someone about or that are not widely recognized. When introducing smartphones, there are several points to consider, such as security measures and app selection. We hope that this glossary will assist you in the introduction and operation of your smartphones. *You can view the detailed content of the article through the related links. For more information, please feel free to contact us.*

Points will be awarded based on the monthly usage fee and communication charges for the eligible KDDI fixed communication services associated with au mobile phones. Corporate customers tend to accumulate points easily due to multiple contracts, but they often have little awareness of how many points they have. Upon checking, they usually find that they have accumulated a significant amount. Since corporate customers have fewer opportunities to use their points, it is not uncommon for points to expire. *For more details on the column, please refer to the related links. For further inquiries, feel free to contact us.

We would like to introduce our "BPO Services." We solve issues related to mobile phones that contain important customer information, such as "I implemented MDM but can't use it effectively" or "I don't know what to do when my smartphone breaks." MDM can be managed collectively by our company. Additionally, in case of a malfunction, we can promptly arrange for smartphones and tablets. Remote locking and unlocking of mobile phones is also possible. 【Scope of Services】 ■ Application reception desk ■ Device arrangement ■ Kitting ■ Inquiries and maintenance ■ Device management ■ Aftercare *For more details, please refer to the PDF document or feel free to contact us.

Recently, many companies have been incorporating BPO and outsourcing as important elements in their management strategies. While the term "BPO" is known, it seems that there are still few people who accurately understand its specific content. In this article, we will explain the overview of BPO in detail, discuss its advantages and disadvantages, and also introduce BPO in the management and operation of company smartphones. *For detailed content of the column, you can view it through the related links. For more information, please refer to the PDF materials or feel free to contact us.

Do you have these concerns about managing business terminals? "Frequent configuration errors" "Spending too much time on inquiries" "Too much effort required for terminal management" Suntelcom Japan's original BPO service "MaruMoba" solves all of these issues. In this article, we will detail how MaruMoba's features, implementation benefits, and actual success stories can help resolve terminal operation challenges. A must-read for those aiming to improve operational efficiency and promote DX. *For more details, you can view the related links. For more information, please download the PDF or feel free to contact us.*

In recent years, many companies have been introducing corporate smartphones and mobile phones to improve business efficiency and enhance security. However, there are likely many personnel who struggle with the kitting process even after the devices are introduced. Therefore, this time, we will introduce the reasons why kitting for corporate smartphones and mobile phones can be challenging, as well as key points to proceed smoothly. *For detailed content of the column, you can view it through the related link. For more information, please refer to the PDF document or feel free to contact us.*

To efficiently manage and secure mobile devices necessary for business, the MDM solution is recommended. MDM refers to services or software that centrally monitor and manage mobile devices. In this article, we will clearly explain the necessity, functions, and implementation points of MDM. *For detailed content of the column, please refer to the related links. For more information, please check the PDF materials or feel free to contact us.*

This page introduces "Apple Business Manager" (hereinafter referred to as "ABM"), which is essential for managing iOS and iPadOS devices. ABM is a program provided by Apple for businesses that supports the realization of more advanced device management by integrating with "MDM tools," which is a collective term for automatic device enrollment and bulk app distribution. There is no cost involved. *For detailed information in the column, you can view it through the related links. For more details, please refer to the PDF materials or feel free to contact us.

MDM (Mobile Device Management) is effective for managing and monitoring corporate smartphones and mobile phones. In addition to device management and security enhancement, MDM has convenient features, among which the "app distribution feature" is very helpful for improving the operational efficiency of corporate smartphones and preventing personal use. In this article, we will explain the "app distribution feature" of MDM and introduce the convenient feature "App Catalog" of our MDM product, 'OptimalBiz.' *For detailed content of the column, you can view it from the related links. For more information, please refer to the PDF materials or feel free to contact us.

MDM (Mobile Device Management) is effective for managing and monitoring corporate smartphones and mobile phones. This time, we will introduce "Restrictions," which is suitable for managing iOS devices, as one of the main features of MDM. "Restrictions" help unify the operational policies of corporate smartphones, enhance security, and prevent personal use. In this article, we will explain why to use restrictions with MDM and how different users can comfortably utilize them. Please be sure to read until the end. *For detailed content of the column, you can view it through the related links. For more information, please feel free to contact us.

In today's business environment, smartphones have become an indispensable presence, and device malfunctions or damage pose a significant risk that can directly lead to operational halts. The prices of smartphones have been rising year by year, and it is not uncommon for models to exceed 100,000 yen. This article provides a detailed explanation of the necessity and benefits of smartphone insurance for corporations. We also introduce recommended insurance services and operational methods, so please be sure to read until the end. *For detailed content of the column, you can view it in PDF format. For more information, please feel free to contact us.*

Recently, there has been an increase in pocket Wi-Fi services using cloud SIMs. Cloud SIMs allow for data communication at low rates over a wide area without the need for a specific carrier's SIM. For those who are using traditional pocket Wi-Fi from major telecommunications carriers, this may be an unfamiliar service. In this article, we will introduce the advantages and disadvantages of cloud Wi-Fi, as well as rental services that can be used at a great value, aimed at those individuals. Please take a look for reference. *You can view the detailed content of the column through the related links. For more information, feel free to contact us.*

One of the common challenges in the operation of business smartphones is the management, sharing, and backup of contact data. In this article, we will introduce a cloud contact management service that allows for easy management, sharing, and backup of customer and employee contact information registered on smartphones. If you are experiencing challenges with managing and sharing contact information on business smartphones, please take a look. *You can view the detailed content of the column through the related links. For more information, feel free to contact us.

There are broadly two types of smartphones. One is the iPhone, which uses iOS, and the other is the Android smartphone, which uses Android OS. When considering implementation, some corporate representatives may wonder, "Which is better for corporate use, iPhone or Android?" Both iPhone and Android have their own features and advantages, but this time I will explain the recommended points of Android smartphones. I will also introduce recommended models for businesses and convenient services, so please use this as a reference. *You can view the detailed content of the column through the related links. For more information, feel free to contact us.*

With the spread of ChatGPT and Copilot, generative AI is transitioning from a "futuristic technology" to an "essential practical tool" for business. Last year, Apple's announcement of Apple Intelligence has made AI a more familiar presence, and its use on business smartphones like the iPhone is also expanding. This article will explain the information leakage risks that companies may overlook when utilizing generative AI, as well as measures to use it safely. We will also introduce specific examples of how our company has implemented ChatGPT, so please refer to them. *For more details on the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*

Frequent iOS updates occur while using an iPhone. It is important to update to the latest software, but many people have questions like, "What exactly is an update?" and "What happens if I skip an update?" Therefore, this time, in addition to the basics of iPhone updates, we will also explain the impact of skipping updates. *For more detailed information, you can view it through the related links. Please feel free to contact us for more details.*

An eSIM is a system that allows users to utilize communication carrier services using a digital SIM embedded in devices such as smartphones. It enables online contracts and immediate activation, and it also supports dual SIM functionality, leading to an increase in companies adopting it for corporate contracts. In this column, we will provide a detailed explanation of the basic mechanism of eSIM, its advantages and disadvantages, as well as recommend models for corporate use and how it integrates with Mobile Device Management (MDM). *For more details on the column, you can view it through the related links. Please feel free to contact us for more information.*

Unlike mobile phones, radios (transceivers) that allow for group communication with a single button are invaluable in various situations. Just by having a radio, information can be shared quickly at any time, and its broadcast capability and immediacy greatly contribute to improving work efficiency. There are various types of radios, but one that has recently gained attention is the IP radio application that utilizes mobile phone network communication areas. In this article, we will introduce the types and features of conventional radios, compare conventional radios with IP radio applications, highlight the unique features of IP radio applications, provide case studies, and finally introduce the IP radio applications we offer. *For detailed content of the column, please refer to the related links. For more information, feel free to contact us.

Smartphones are essential items that support business efficiency and communication both inside and outside the company. However, what if important data leaks to the outside due to loss or theft? Just imagining it is chilling, isn't it? To reduce such risks, Apple's security feature "Activation Lock" is gaining attention. In fact, this feature is quite useful for managing corporate smartphones as well. "What exactly is Activation Lock?" "How do you use it?" In this article, we will clearly explain its mechanism, benefits, and how it can be utilized for corporate purposes. *For more detailed information, please refer to the related links. Feel free to contact us for further inquiries.*

Many people are preparing for disasters. Communication disruptions are one type of disaster. In this column, we will introduce methods to prepare for communication disruptions, specifically DSDS (Dual SIM Dual Standby) and secondary line services. When a communication disruption occurs suddenly, important data may become impossible to send or receive, and systems may come to a halt. Are you fully prepared for such situations? One way to prepare for such circumstances is through communication redundancy. *For more details on the column, you can view it through the related links. Please feel free to contact us for more information.*

Last year, Apple announced the generative AI feature "Apple Intelligence," which became a major topic of discussion. The long-awaited Japanese version has finally arrived in April 2025! It's different from the previous Siri, packed with convenient features that make daily tasks much easier, such as assisting with the creation of text and images. In this article, we will clearly explain how to utilize Apple Intelligence in business settings, along with important points to consider. *For detailed content of the column, you can view it through the related link. For more information, please download the PDF or feel free to contact us.*

On April 10, 2025, KDDI launched the "au Starlink Direct" communication service, which allows smartphones to connect directly to satellites, through collaboration with SpaceX. As a result, in areas where the sky is visible, it will be possible to exchange messages even in mountainous regions, remote islands, and disaster sites where communication has previously been difficult or temporarily unavailable. In this column, we will delve into the details of "au Starlink Direct," focusing on the basic mechanisms of satellite communication, how to use it on compatible devices, and the setup procedures, all explained in an easy-to-understand manner. *For more detailed information, please refer to the related links. For further inquiries, feel free to download the PDF or contact us.

In the era of digital transformation, as companies are required to improve productivity and streamline operations, the iPad is gaining attention as a solution. Not only is it portable, but its excellent operability and the abundance of business-oriented apps support operations in various settings. In this column, we will introduce the features of each iPad model, recommended accessories, and apps that are useful for business. There are also case studies of companies that have achieved digital transformation through the use of iPads, so please read until the end. *For more detailed content of the column, you can view it through the related links. For more information, please download the PDF or feel free to contact us.*