PTCRB:
The PTCRB was established in 1997 as the wireless device certification forum by North American Mobile Network Operators (MNO).

The purpose of the PTCRB is to provide the framework within which cellular GERAN (GSM), UTRA (UMTS) and E-UTRA (LTE) mobile devices and modules obtain certification for use on PTCRB Operator networks.

PTCRB provides a certification program for the following:
•GERAN devices operating in the 850 and 1900 MHz bands
•UTRA devices operating in FDD Bands II, IV and V
•E-UTRA devices operating in FDD bands 2,4,5,7,12,13,14,17 and 25; TDD band 41
Note: bands subject to change as technology advances

CTIA has been assigned as the administrator for the PTCRB Certification process and is also responsible for the administration of PTCRB-issued IMEIs.