Lenovo i55 will get stuck as soon as it receives the SMS.

I used to be like this. After I found Lenovo repair shop, he said it was because there were too many junk files in the memory, which was caused by playing games online. Then he helped me restore the factory settings.

The way to restore the factory settings is not to enter the mobile phone, but to turn it on after entering a specific password in the standby screen, so the landlord will go to Lenovo repair shop. He confiscated my money when I went ~