Most technicians use specialized hardware/software "boxes" or "dongles." These are the most reliable methods:
In this post, we will walk through the causes of this issue and the general methods for Alcatel 2012D IMEI repair. alcatel 2012d imei repair
Because the Alcatel 2012D uses a MediaTek (MTK) processor, you generally need specialized service software to rewrite the IMEI data. 1. Professional Service Tools alcatel 2012d imei repair