Is it possible for someone to remove their phone number from my mobile phone if they have no access to it

Question

My daughter and her friend have checked their phones and an EX friends phone number seems to have vanished from both of their phones. Is it possible that their EX friend could have had her number removed from their phones

Answer 1

The person would have to have access to the phone. If they did it, they either handled the phone or they accessed via blutooth or such..