The mobile phone can't receive the short message sent by China Mobile. I know it's a phone. )

Hello, landlord. You can check whether there are such useless files after connecting to the PC. Generally speaking, it has no effect on the system, as long as you don't install it in the memory of your mobile phone. It is best not to delete these files, which are generally useful and record the use of the software.

For example, if it is a generated file of game software, it is probably your game archive. If it is QQ, the generated file may be your chat record and account password information!