What are the problems that don't arrive on the iPhone on Rakuten Mobile?What is happening

People who use Rakuten Mobile and iPhone have reported one after another that they may not receive a call.What is happening?

Rakuten Mobile officially responded to the iPhone in April 2021.However, in recent months, phenomena have been reported that incoming calls cannot be made on the iPhone and remaining in the incoming call history, especially after the specifications of the "Rakuten Link" application in the iOS in July 2021.Is pointed out.

Rakuten Link is an Rakuten -specific communication app that conforms to the standard "RCS" and integrates IP phones and messaging functions.Using this app will allow you to use Rakuten domestic calls, so it is basic to use Rakuten Link for telephone calls and arrival.However, in July 2021, the behavior of the call on the iPhone changed as follows.

・ When the other party sends it in Rakuten Link: Come to the iPhone Rakuten Link app (no change)

・ When the other party sends it on a landline or mobile phone: Come on on the iPhone standard phone application (there is a change, it was adhered to the Rakuten Link app)

Although the detailed reason is not explained, it is believed that Apple has not allowed the mobile carrier to modify the user experience of the iPhone or the message, and Rakuten Mobile is formally formal on the iPhone.By responding, I get the impression that I have matched the "general" behavior.

The Rakuten Mobile Public Relations Department says that some customers have received voices from some customers, such as "Rakuten Link's Rakuten Link specifications for iOS.We will respond while asking for the service usage status. "

Certainly, Rakuten Mobile is switching from KDDI roaming to its own line, and there are areas where radio waves are uneasy.However, if the radio wave is the cause, there should be many similar problems in Android.Most of the reports are iPhone, so there is a cause other than radio waves.

The terminal where the phone arrives on Rakuten Mobile varies depending on the situation

Rakuten Mobile did not disclose detailed information, so I verified it on my own Rakuten Mobile line and hand -held terminal.

In fact, the combination of iPhone 13 and Rakuten Mobile's SIM card (ESIM) has been tested for 100 times or more under various conditions, such as Wi-Fi, data communication on/off, and the presence or absence of Rakuten Link apps, but all are all.It moved normally.

On the other hand, you can make a situation close to the reported issues simply.Prepare an iPhone and Android device and set it as follows.

(1) Put the Rakuten Mobile SIM card on the iPhone

(2) Put the Rakuten Link app on Android and log in

What happens if you send it from a mobile phone from another carrier to the Rakuten Mobile phone number?In this case, the rakuten Link app on the Android device of (2) is received, and there is no reaction on the iPhone side.This is probably because Rakuten Link is given priority when calling on the phone on Android.

Next, when the (2) Android device was set to an in -flight mode, it came to the iPhone of (1) this time.From this, it can be seen that Rakuten Mobile does not always receive calls on the terminal containing the SIM card, but depending on the situation of the Rakuten Link app.

In addition, it may take some time to judge the terminal to receive calls.In the previous example, it took about 10 to 15 seconds to receive a call to (1) iPhone.During this time, the side of the call is silent without a calling sound, so if you give up on the way, there will be no incoming call history on the iPhone.

After that, the Android device in (2) was the same, and when I logged in with the Rakuten Link app on the iPhone of (1), the telephone came to the iPhone immediately.

This verification uses two iPhone and Android, and the usage environment is different from those who use only the iPhone.However, I believe that if there is some problem when Rakuten's network judges a terminal that incomes the phone, there will be a situation that cannot be incoming.

For example, the Rakuten Link app has the following precautions, and uninstalling the app without logging out may cause problems.

In any case, mobile phones function as an important lifeline, and the fact that the phone is not connected is a serious problem that is different from the problem that the smartphone app cannot be used.I want Rakuten Mobile to disclose detailed information.

December 21 postscript:

Rakuten Mobile officially received disability information."It has been confirmed that there is an event that fails to incoming when using services in the partner line area."

December 28 postscript:

Rakuten Mobile announced that the software update work on Rakuten's network has been completed.

(Updated 12/28) About the event that the incoming call fails when using the iPhone