i changed 10 hoome buttons on i6 everyday and restore them no error 53.. u need to make sure the cable running for home button under lcd plate is fine.. also the home button has to be of good quality.. aftermarket doesnt matter.
NO THE PHONES ARE NOT REPACKED . they are new phones never activated. i believe this is the problem Next Tether Policy ID: 15 15 means BLACKLISTED. now if they are blacklisted. they should still be able to activate and use in other countries.