kf00115
Newbie level 1
I'using SIM900 from 4 mounths without problem with SIM 128KB, whit TIM (Italian network). From 11/03/2011 SIM900 don't work, but give me cpin not ready. If i use SIM 16KB of TIM , SIM900 work correctly. If i use 128KB Vodafone, wind, 3 (another Italian networks), SIM900 work correctly. May be SIM900 temp to use UMTS and cannnot work?
How can i set GSM and not UMTS. Thanks
How can i set GSM and not UMTS. Thanks