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. If you use an iPhone, install the profile via Safari using the official link or a configuration QR code. If you use Android, manually enter the APN settings: APN: p.rcomm.jp, Username: aaa, Password: 0000, and APN Protocol: IPv4.

In short: iPhone uses a profile installation, while Android requires manual APN entry. After setup, turn on mobile data, select the Rakuten SIM for internet/data, 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 internet access on their phone by themselves.

• You have just received a Rakuten MVNO SIM, but the internet does not work after inserting it.
• You use an iPhone and need to install the Rakuten MVNO 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 a friend or family member and need an easy guide to send them.

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 and identity verification may be different.
• eSIM: eSIM requires QR code activation and is not exactly the same as a physical SIM.
• Rakuten SIM or other SIMs not provided by HD Telecom: APN settings may be different.
• SIM-locked phones: even with the correct APN, the SIM may not work if the phone is locked.

Before You Start

Before setting the APN, 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, be ready to enter every APN character exactly.

How to Set Up Rakuten MVNO APN on iPhone

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

Method 1: Set Up with QR Code

Step 1: Connect iPhone to the Internet

Connect your iPhone to Wi-Fi or another working internet connection. Since the new SIM may not connect yet, Wi-Fi is the most stable option.

Step 2: Use Safari as the Default Browser

On your iPhone, go to:

Settings → Safari

Use Safari when opening the configuration profile. For iPhone profile installation, Safari is recommended instead of Chrome.

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 the iPhone asks whether to download the profile, tap:

Allow

Wait until the configuration file download is complete.

Step 5: Install the Profile in VPN & Device Management

After the download is complete, go to:

Settings → General → VPN & Device Management

Select:

Rcom MVNO iPhone用プロファイル

Then tap:

Install → Install → Done

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

Method 2: Set Up with Direct Link

If you cannot scan the QR code, 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 profile. 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 as the default browser when installing an APN profile on iPhone, because the mobileconfig file may not be handled correctly.

After Setup on iPhone

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

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

How to Set Up Rakuten MVNO APN on Android

On Android, you usually do not install APN through a configuration link like iPhone. You need to manually enter the Rakuten MVNO APN settings.

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

Depending on your phone model, select one of the following or a similar menu:

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

Step 3: Select Mobile Networks

Open:

Mobile Networks

Or the equivalent menu on your phone.

Step 4: Select Access Point Names

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 the 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 new APN:

Rakuten MVNO

If you do not select it, the phone may continue using the old settings and fail to 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 Chrome is set as your default browser, switch back to Safari and open the link 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 incorrect character may prevent internet connection.

4. Username or password is incorrect

The required values are:

• Username: aaa
• Password: 0000

Be careful not to confuse the number 0 with the letter O. The password is four zeros.

5. The newly created APN was not selected

After saving the new APN, return to the APN list and select Rakuten MVNO. If you only create it but do not select it, the configuration may not be active.

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 correct APN settings. Check whether your phone is SIM-free or unlocked.

When Should You Contact HD Telecom?

Contact HD Telecom 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 settings 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 a 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 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 a 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 the phone using another SIM for data. Check each step again.

Do I need Wi-Fi for setup?

For iPhone, Wi-Fi is recommended to download the profile. For Android, Wi-Fi is not required to enter 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 a screenshot of your APN settings, your phone model, and your order number so support can help faster.