The R mark in the mobile phone circle refers to international roaming. If you must remove the R, you can only try to go to the operator to change the SIM card to try to solve the problem.

Domestic cards will not display R anywhere in the country, even when roaming to other places. Only if you go overseas, such as the United States, and roam from China Unicom to AT&T, R will be displayed.

If this situation occurs with domestic cards, it is due to irregular card issuance by the operator. There is no need to worry about this. Even if R is displayed, the charges will still be based on normal standards. This mark will not affect the tariff. However, if there is R, it will not be able to access the Internet (G/E/3G/4G) by default. Just turn on the roaming data settings in the operator settings.

The method is as follows:

1. Open "Settings" on your phone, find "Mobile Network", and enter the mobile network settings

2. Select to open "Mobile Network" Data Roaming" is all you need.