How to Install the APN Configuration for SIM Call Docomo on iPhone and Android

The setup process is different between iPhone and Android. Therefore, make sure you identify the type of phone you are using before starting the installation.

Note: APN settings may vary depending on the SIM card and mobile carrier. Do not apply the configuration for one Docomo SIM to another Docomo SIM or to carriers such as Rakuten or Y!mobile without verifying the information first.

Setting Up SIM Call Docomo on iPhone

Step 1: Insert the SIM and Check the Signal

First, insert the SIM Call Docomo into your iPhone.

After inserting the SIM, wait for a moment and check the status bar on the screen:

• If the phone displays signal bars and recognizes the SIM normally, you can proceed to the next step.

• If the phone has no signal or does not recognize the SIM, remove the SIM and check the SIM orientation, SIM tray, and whether the device supports the SIM.

If you have checked everything but the phone still cannot connect to the network, contact the shop for further assistance and troubleshooting.

Step 2: Check Existing Configuration on the iPhone

Before installing a new APN configuration, check whether the iPhone already has a configuration profile from another SIM or carrier.

On the iPhone, go to:

Settings → General → VPN & Device Management

There are two possible situations:

Case 1: The iPhone does not have an existing configuration

If you do not see any configuration profile related to the SIM, proceed to Step 3 to download the CMLink configuration.

Case 2: The iPhone already has an old configuration

If the device has a previous APN profile installed, you need to delete it before installing the new configuration.

Go to:

Settings → General → VPN & Device Management → Select the profile you want to delete → Remove Profile

Deleting the old profile is very important. If the previous configuration remains installed, the iPhone may not allow you to install the new profile, or the SIM may still fail to establish the desired mobile data connection after installation.

Step 3: Download the APN Configuration for SIM Call Docomo

After removing any old configuration, connect the iPhone to WiFi so that you can download the APN profile.

Download the CMLink configuration intended for SIM Call Docomo.

When you access the configuration download link, the iPhone will display a notification asking whether you want to allow the profile to be downloaded to the device.

Select "Allow" to start downloading the configuration.

After the download is complete, do not turn off WiFi yet. Proceed to the next step to install the downloaded profile.

Step 4: Install the CMLink Profile on iPhone

After downloading the configuration, follow these steps:

1. Return to the iPhone home screen.

2. Open Settings.

3. Select General.

4. Tap VPN & Device Management.

5. Find the downloaded configuration profile.

6. Select the profile named "CMLink".

7. Tap "Install" in the upper-right corner of the screen.

If the iPhone asks you to enter your screen passcode, enter the correct passcode currently used on the device.

Then continue tapping "Install" to confirm that you want to add the configuration.

During the installation process, another confirmation screen may appear. Continue selecting "Install" until the system indicates that the installation has been completed.

Step 5: Complete the Configuration and Check the Internet

Once the CMLink profile has been successfully installed, tap "Done" in the upper-right corner of the screen.

The iPhone configuration process is now complete.

To check the connection:

1. Turn off WiFi on the phone.

2. Make sure mobile data is enabled.

3. Wait briefly for the iPhone to connect to the network.

4. Open a browser or an application that requires Internet access to test the connection.

If you can access websites or use applications that require Internet access, you have successfully completed the SIM Call Docomo setup.

If the CMLink profile has been installed but mobile data still does not work, check the SIM card, configuration profile, and network status again. If you cannot resolve the issue yourself, contact the shop for assistance.

Setting Up SIM Call Docomo on Android

For Android devices such as Samsung, OPPO, Huawei, and Sony, you do not need to download a configuration profile as you do on iPhone. Instead, you will create or edit the APN directly in the mobile network settings.

The names of the menus may vary slightly depending on the Android version and the manufacturer's interface. However, you can generally find the APN settings by going to:

Mobile Network → Access Point Names (APN)

Then create a new access point.

Step 1: Open the APN Settings

On your Android phone, go to:

Settings → Mobile Network → Access Point Names (APN)

In the APN list, select "Create New Access Point" or tap the "+" icon, depending on your device.

Step 2: Enter the APN Settings for SIM Call Docomo

Create a new APN and enter the following information accurately:

• Name

• APN

• Username

• Password

• Authentication Type

• APN Type

Important: APN information must be entered correctly. The username, password, and APN should retain the lowercase format provided in the configuration details.

Pay particular attention to the "APN Type" field. Enter:

default,supl,ia

Do not add or remove any values unless instructed to do so, as changing these parameters may prevent the mobile data connection from working properly.

Step 3: Save and Activate the APN

After entering all the required information, tap "Save" to save the new access point.

Return to the APN list and select the newly created "Mobappy" configuration to activate it.

Then:

1. Turn off WiFi.

2. Turn on mobile data.

3. Wait for the phone to connect to the network.

4. Open a browser to test the Internet connection.

If you can access websites or use online applications, you have successfully completed the APN setup for SIM Call Docomo on Android.

Important Notes When Setting Up SIM Call Docomo

To ensure a smooth setup process, follow the steps in the correct order and do not skip the step of checking for existing configuration profiles on iPhone.

On iPhone, you need to download and install the "CMLink" configuration profile. On Android, you need to manually create an APN using the corresponding settings.

If the phone does not show a signal immediately after inserting the SIM, do not proceed with APN configuration right away. First, make sure that the device has recognized the SIM and is receiving a network signal.

In addition, APN settings are not necessarily the same for different types of SIM cards. Therefore, do not use the settings from another SIM for SIM Call Docomo unless you have confirmed that they are the correct configuration.

If you have completed all the steps but the SIM still cannot access the Internet, check the APN name, username, password, authentication type, and APN type again.

If the issue persists, contact the shop for further assistance.