Default note n900w8

hi guys, i have a problem with my note 3, i cant register on network....only emergency calls, if i put another sim card, when is in the lock screen appears very quickly the name of the carrier but after 3 seconds at much again emergency call only, what can i do?
i check with the carrier and they say not bad imei, and i dont have the ticket...
please help me, and regionlock away dowsnt work, and today i go to sat, but i have 0x1 know, and no more warranty...any suggestion?