I am getting an error System.LimitException: Too many SOQL queries: 101 .
my code.
trigger contactaccountrelation on Contact (before insert) {
 
       list<account> acc = [select id, name from account];
    for(account a : acc){
    for(contact con : [select lastname, accountid from contact where accountid =: a.id]){
        con.OtherPhone = a.Phone;
    }
    }
}