Why does Nokia c5-03 often miss sending short messages?

If you have 360 security guard software or software similar to mobile phone housekeeper in your mobile phone, he will intercept messages with strange numbers or messages and incoming calls with specified numbers according to your settings (or default settings).

{It is also possible that you inadvertently set a number as your private person}

You can go to that software to check the settings, and the intercepted information can also be read there.

Typing is very hard ~ ~ I hope I can help you ~ ~ adopt me ~ ~ haha