The phone does not display received text messages. When there are text messages, there is no image on the upper right corner. Only by opening the message can you know whether there are text messages?

I think you should go to customer service to upgrade it

Because this problem often occurs with smartphones

In fact, upgrading is what is commonly called flashing on the Internet~~~ ~

If you have no experience, I do not recommend you to flash your phone yourself

Customer service upgrades are free within one year~~

After the upgrade, the speed will be faster It will also be faster~~