Hello! It's unfortunate to hear that your account in Last Island of Survival got banned when you tried to log in using your new Redmi Note 11R 5G.
First of all, I want to clarify that the Redmi Note 11R 5G is a legitimate device and should not cause any issues with gaming or result in automatic bans from games like Last Island of Survival. The phone itself does not have the ability to trigger bans in games.
There could be various reasons why your account got banned, and it's essential to reach out to the game's support team to inquire about the ban. Sometimes bans can happen due to misunderstandings or errors, so it's always good to communicate with the game developers directly to get more information.
In general, the Redmi Note 11R 5G is a capable device for gaming, and it should not have issues with other games unless there are compatibility issues specific to certain games that need to be addressed by the game developers.
I recommend contacting Last Island of Survival's support team to understand the reason behind the ban and to resolve the issue. Hopefully, they can provide you with more information and help you get back to playing the game without any issues.