Why does my mobile phone sometimes have typos when there are code words in the input box, and there is no response when I want to order some words?

This is about the operation of mobile phone, the ram is too small or the system cache is too much. Because Android is an open source system, the underlying system will retain the previous software and other caches at runtime. It is best after the recovery of double root cleaning. Or brush the machine. If it is a hardware problem, you can only change your mobile phone.