Report Abuse. Once a SIM card is deactivated it is dead. You will have to get a new SIM. AT&T has the option of SIM only, where you use your own phone and purchase the SIM (including Phone #) from them. However I do not know if this is an option on a family plan.seels58 · 7 years ago. Thumbs up. 1. Thumbs down.0.nce a SIM card is deactivated it is dead. You will have to get a new SIM. AT&T has the option of SIM only, where you use your own phone and purchase the SIM (including Phone #) from them. However I do not know if this is an option on a family plan. seels58 · 7 years ago. Thumbs up. 1. Thumbs down. 0.