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.

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.*

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.

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.

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.*

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.

"MaruMoba Lite" is a service that allows you to delegate all the tedious tasks from purchasing devices to setup and repair support. It covers issues like screen cracks and water damage thoroughly without any additional contracts. The monthly fee is simple, and there is no need to pay extra for insurance. It reduces the burden on the person in charge while providing peace of mind in case of emergencies. This plan is perfect for those who feel they want to make their internal mobile operations "easier" and reduce management hassle. [Services] ■ iPhone repair procedure agency service ■ Simple kitting service (paid) *For more details, please download the PDF or feel free to contact us.

In December 2025, the "Smartphone Software Competition Promotion Act (commonly known as the New Smartphone Law)" was enacted. At first glance, this law seems to pertain to "general users" and "app development companies," but it may actually have implications for corporate smartphone operations as well. In this column, we will clearly explain "What is the New Smartphone Law?", "What impact does it have on corporate smartphones?", and "Examples of utilizing MDM (OPTiM Biz)." *For more detailed content of the column (such as blogs), you can view it through the related links. For more information, please download the PDF 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.

Have you ever used a pocket Wi-Fi that utilizes the currently popular cloud Wi-Fi? At Santelecom Japan, we offer "STJ Rental Wi-Fi" for corporate customers. Although I usually guide customers, I wanted to verify whether "cloud Wi-Fi really connects comfortably" and "whether the switching is smooth even while moving," so I decided to use STJ Rental Wi-Fi myself for a few days. In this report, I will honestly share my experience, including both the good aspects and the points that raised some concerns. *For detailed content of the column, you can view it through the related links. For more information, please feel free to download the PDF or contact us.

Have you ever experienced your iPhone suddenly becoming unresponsive or not turning on? In such situations, a "force restart" can be helpful. This article clearly explains the cases when a force restart is necessary on an iPhone, along with precautions and the operating methods. Additionally, for those who find it difficult to understand the operating methods through text alone, we also introduce a video explaining the force restart available on the Santelecom Japan YouTube channel "STJCHANNEL." If you want to follow along with the actual operation, please use it as a reference. *You can view the detailed content of the article through the related links. For more information, feel free to contact us.

Corporate smartphones and mobile phones continue to be managed even after they are arranged for employees. There are actually many detailed tasks involved, such as collection, ledger confirmation, initialization, MDM verification, kitting, and delivery. Although each task may seem small, they can accumulate and take up a lot of time in device management. This time, we will closely follow the operations of Santelecom Japan's "Maru Moba" and take a look at the behind-the-scenes processes until the devices are handed over to the next users. *For more detailed information, please refer to the related links. Feel free to contact us for more details.