how to delete my phone mobile number from others contacts?

[Android Central Question]

after i knew that my mobile is hacked, and i know the person, so how to delete my phone number from his device? and if deleted, he cant play on my device or hacked it ? or if i block his number from my contact list, does this mean my number will disappear from his device? plz help !!!!!! my photos, videos, all files with him!!! he know everything i did and ill do. plz help
im really in a huge problem!!!
or there is anyway that i can become a hacker also?
plzzzzzzzzzzz helllllpppp

 

[djrakowski]

What evidence do you have that this individual has hacked your phone? Does your phone have security measures enabled (password, PIN, fingerprint)?

If you’re sure it’s really been hacked, remove the SIM card, back up your data, factory-reset it, turn off the phone, and contact your mobile operator and request a new SIM and new number. Simply blocking his number won’t help, since he’ll still know yours, and you can’t delete your number from his device without gaining physical access to it.

 

[RumoredNow]

Contact law enforcement authorities with the evidence.

 

[djrakowski]

I'd also recommend changing passwords on all accounts associated with your phone.

 

[prem shanker singh]

Com to my mini number