My friend received my message, but I didn't send it. I always carry my mobile phone. Who will send it and how?

1 Your number has been copied, so-called card burning.

There are some number editing tools that can pretend to be any number when texting and making phone calls.

If you sign up for Fetion, you can send text messages on your computer without a mobile phone.

Other online texting software will disguise your number.

In the first case, you should be able to find out because he and you both use your number.

Other situations should not be easy to check.

Of course, there may also be mobile system errors or crosstalk.