Samsung U700 signal but not full of calls after leaving unlock
 

Look it did unlock a U700 and everything perfect signal full and not so good but is just emerging so-called emergency call and researching law that these cell suffer from what is a manufacturing problem, also was a law that IMEI but the IMEI This is fine, my question is whether this can be resolved or not because I have already Leyden many things and were no longer think that
thanks and greetings Antem