How to Set Up APN for HD Telecom Rakuten MVNO Data SIM

Quick Answer

To use HD Telecom’s Rakuten MVNO Data SIM, you need to set the correct APN configuration. On iPhone, install the APN profile by scanning the QR code or opening the configuration link in Safari. On Android, manually enter the APN settings: APN: p.rcomm.jp, Username: aaa, Password: 0000, and APN Protocol: IPv4.

In short: iPhone installs the Rcom-cellular profile; Android requires manual APN entry. After setup, turn on mobile data, select the Rakuten SIM for internet, turn off Wi-Fi, and test your 4G/5G connection.

Who This Guide Is For

This guide is for customers who are using or preparing to use HD Telecom’s Rakuten MVNO Data SIM and want to set up mobile internet by themselves.

• You have just received a Rakuten MVNO SIM, but there is no internet after inserting it.
• You use an iPhone and need to install the Rcom-cellular APN profile.
• You use Android and need to enter the APN manually.
• Your phone shows signal bars but cannot access the internet.
• You ordered a SIM for family or friends and need an easy-to-follow setup guide.

Cases Not Covered by This Guide

This guide applies only to HD Telecom’s Rakuten MVNO Data SIM. It does not apply to the following cases:

• SoftBank Data SIM: the settings are different and do not use the Rakuten MVNO APN.
• Voice SIM with a Japanese phone number: activation, identity verification, and setup steps may be different.
• eSIM: eSIM requires QR code activation and is not exactly the same as a physical SIM.
• Rakuten SIM or other carrier SIM not provided by HD Telecom: APN settings may be different.
• SIM-locked phone: if your phone is locked, the SIM may not work even when the APN is correct.

Before You Start

Before setting up, check the following points:

• The SIM is inserted correctly into the phone.
• Your phone is SIM-free or unlocked.
• The SIM has been activated correctly by HD Telecom.
• If you use iPhone, connect to Wi-Fi before downloading the profile.
• If you use Android, enter the APN carefully without extra spaces or characters.

How to Set Up Rakuten MVNO APN on iPhone

To use the Rakuten MVNO SIM on iPhone, you need to install the Rcom-cellular APN profile. There are two ways to install it: by QR code or by direct link.

Method 1: Set Up by QR Code

Step 1: Connect iPhone to Wi-Fi

First, connect your iPhone to Wi-Fi or another working internet connection. Since the new SIM may not connect immediately, Wi-Fi helps download the profile more reliably.

Step 2: Use Safari

On iPhone, it is recommended to use Safari for profile installation. You can check Safari from:

Settings → Safari

When installing a profile on iPhone, using Chrome as the default browser may prevent the configuration file from opening correctly.

Step 3: Scan the Configuration QR Code

Use your iPhone camera to scan the Rakuten MVNO configuration QR code provided by HD Telecom.

After scanning, the iPhone will open the configuration file or show a prompt to download the profile.

Step 4: Allow the Profile Download

When your iPhone shows a message asking to download the profile, tap:

Allow

Then wait until the configuration file finishes downloading.

Step 5: Install the Profile in VPN & Device Management

After the download is complete, go to:

Settings → General → VPN & Device Management

Select the profile:

Rcom MVNO iPhone用プロファイル

Then tap:

Install → Install → Done

If your iPhone asks for the device passcode, enter your passcode to continue.

Method 2: Set Up by Direct Link

If you cannot scan the QR code, you can open the configuration link directly in Safari on your iPhone:

https://comm.rakuten.co.jp/houjin/mobile/common/apn_setting/Rcom-cellular.mobileconfig

After opening the link, your iPhone will download the configuration file. Then follow these steps:

1. Open Settings.
2. Select General.
3. Select VPN & Device Management.
4. Select Rcom MVNO iPhone用プロファイル.
5. Tap Install.
6. Tap Install again if confirmation is required.
7. Tap Done.

Important note: Open the link with Safari. Do not use Chrome when installing the APN profile on iPhone.

After Setup on iPhone

After installing the Rakuten MVNO profile, check the connection in this order:

1. Go to Settings → Cellular.
2. Turn on Mobile Data.
3. If your phone has multiple SIMs, select the Rakuten SIM as the main data line.
4. Turn off Wi-Fi.
5. Open any website to test the 4G/5G connection.

How to Set Up Rakuten MVNO APN on Android

On Android, you need to manually enter the APN settings required by the carrier. The setup only takes a few minutes and does not require any special app.

Unlike iPhone, Android usually does not install APN using a mobileconfig link. You need to open Access Point Names / APN in mobile network settings and enter the information manually.

Rakuten MVNO APN Settings

Steps to Set APN on Android

Step 1: Open Settings

On your Android phone, open:

Settings

Step 2: Select Connections or Network & Internet

The menu name may differ depending on your phone model. Choose a similar menu such as:

• Connections
• Network & Internet
• SIM & Mobile Network
• SIM Cards & Mobile Networks

Step 3: Select Mobile Networks

Select:

Mobile Networks

Or the equivalent menu on your phone.

Step 4: Select Access Point Names / APN

Tap:

Access Point Names / APN

Your phone will show the existing APN list.

Step 5: Add a New APN

Tap:

+ / Add

Or select Add New APN.

Step 6: Enter APN Information

Enter the following information exactly:

• Name: Rakuten MVNO
• APN: p.rcomm.jp
• Username: aaa
• Password: 0000
• Authentication: None
• APN Protocol: IPv4
• Other fields: Leave as default

After entering the information, tap:

Save

Step 7: Select the APN You Created

Return to the APN list and select the APN you just created:

Rakuten MVNO

If you create the APN but do not select it, the settings may not be activated and your phone may still not connect to the internet.

Step 8: Turn On Mobile Data

Turn on:

Mobile Data

If your phone has two SIMs, select the Rakuten SIM for internet/data.

Step 9: Restart and Test the Connection

After setting the APN, turn off Wi-Fi and open any website. If the internet still does not work, restart your phone and check again.

Quick Comparison: iPhone vs Android

Common Issues and How to Fix Them

1. iPhone cannot install the profile because the link was opened in Chrome

On iPhone, open the configuration link with Safari. If you are using Chrome, reopen the link in Safari and download the profile again.

2. The profile was downloaded but not installed in VPN & Device Management

Downloading the configuration file does not mean setup is complete. You need to go to:

Settings → General → VPN & Device Management

Then select Rcom MVNO iPhone用プロファイル and install it.

3. APN was entered incorrectly on Android

The APN must be exactly:

p.rcomm.jp

Do not add spaces, use uppercase letters, or mistype the dots. One wrong character may prevent your phone from connecting to the internet.

4. Username or password is incorrect

The required information is:

• Username: aaa
• Password: 0000

Note: the password is four zeros, not the letter O.

5. The newly created APN was not selected

After saving the new APN, you must return to the APN list and select Rakuten MVNO. If you do not select it, the phone may keep using the old configuration.

6. The wrong SIM is selected for data on a dual-SIM phone

If your phone has two SIMs, go to SIM or Mobile Network settings and select the Rakuten SIM for mobile data.

7. Mobile data is not turned on

Even after setting the APN or profile, you still need to turn on Mobile Data. If Airplane Mode is on, turn it off first.

8. Wi-Fi is still on during testing

If Wi-Fi is still on, you may think the SIM is working while the phone is actually using Wi-Fi. Turn Wi-Fi off and open a website using 4G/5G.

9. The phone is SIM-locked or does not support Japanese SIMs

If your phone is SIM-locked, it may not detect signal or connect to the internet even with the correct APN. Check whether your phone is SIM-free or unlocked.

When Should You Contact HD Telecom?

You should contact support if you followed the guide correctly but still experience one of these issues:

• You installed the Rcom MVNO profile on iPhone, but there is still no internet.
• You entered APN p.rcomm.jp correctly on Android, but the internet still does not work.
• Your phone shows “No SIM” or “No Service”.
• Your phone has signal bars but no 4G/5G icon.
• You cannot find the APN menu on Android.
• You are not sure whether your phone is SIM-locked.

When contacting support, send the following information so they can check faster:

• Name of the person who placed the order.
• Order number, if available.
• SIM type: Rakuten MVNO.
• Phone model: iPhone, Samsung, Google Pixel, OPPO, Xiaomi, etc.
• Screenshot of the APN screen or Cellular/SIM settings screen.
• Screenshot of any error message shown on the phone.

Frequently Asked Questions

Can I use HD Telecom’s Rakuten MVNO SIM on iPhone?

Yes. On iPhone, you need to install the Rcom-cellular APN profile using the QR code or the Safari configuration link.

What is the iPhone configuration link?

The iPhone configuration link is:

https://comm.rakuten.co.jp/houjin/mobile/common/apn_setting/Rcom-cellular.mobileconfig

Open this link in Safari on the iPhone where you will use the SIM.

Does Android use the same link as iPhone?

No. Android usually does not set APN through an iPhone mobileconfig file. You need to manually enter the APN in Access Point Names.

What is the Rakuten MVNO APN for Android?

The main settings are:

• APN: p.rcomm.jp
• Username: aaa
• Password: 0000
• Authentication: None
• APN Protocol: IPv4

Do I need to restart the phone after setup?

Restarting is recommended if the internet still does not work after setup. Many Android phones apply the new APN correctly after restarting.

Why does my phone show signal but no internet?

Common reasons include incorrect APN, not selecting the newly created APN, mobile data being off, or another SIM being selected for data. Check each step again.

Do I need Wi-Fi for setup?

For iPhone, Wi-Fi is helpful for downloading the profile. For Android, Wi-Fi is not required to enter the APN, but it is useful for opening this guide or contacting support.

Can a Rakuten MVNO Data SIM make calls or receive SMS?

A Data SIM is mainly for internet access. If you need a Japanese phone number for calls, SMS, banking, PayPay, or administrative procedures, choose a voice SIM with a Japanese phone number.

Conclusion

For HD Telecom’s Rakuten MVNO Data SIM, remember this simple rule: iPhone installs the Rcom-cellular profile using Safari or QR code; Android manually enters APN p.rcomm.jp, username aaa, and password 0000. After setup, turn on mobile data, select the Rakuten SIM, turn off Wi-Fi, and test 4G/5G.

If you followed all steps correctly but still cannot connect, contact HD Telecom and send your APN settings screenshot, phone model, and order number so support can help faster.