Kind of weird story, I have bought this used phone which looked like new, after about 3 days and some weird problems like ***signal loss it died***. send it to warranty and instead of changing the phone they have offered repair and charged me money for it. anyway ***after repair*** I am able to charge the phone and ***fast charge is working*** but ***I don't have data connection***. my friend is a mobile technician and he said he ***changed USB/daughter board and also reballed CPU*** and still it's not working but ye also said that data would work for a very ***short period*** and then ***stop working again***.
also I have some experience repairing phones if it matters.
Any help would be very appreciated.
Thanks in advance
best regards.