How to modify the SMS time (reward 50 points in advance and add 100 points after answering)

Your own mobile phone is A, find another mobile phone B, and adjust the time of A and B to the time you want to modify.

The real number to send a message is C. What we need to do now is to store B's number in A's phone book and fill C's number in the name column of the number (note: my mobile phone supports this filling), for example, fill in the name column: +86 130XXX. Then send a text message to A with B mobile phone. On the surface, I believe outsiders will think that it is a text message sent by C!