sir,

i have an iphone 4 cdma verizon and bought it to india and unlocked it unoffcially on reliance and i am using it from a year, recently i have uprgaded the software update from my iphone and it was done from 5 to ios 6.1.2, all everything is working properly but the problem is that i dont find cydia in mobile, i can make calls, use internet, wifi games and all everything good but the only problem is cydia is not installed, how to install it...if i jailbreak again then my phone may gets locked again to verizon network or i can jailbreak it or not.. how to get cydia..please help me sir...

sir i have jail broken the device and cydia installed succesfully but there is a network problem showing no service, what to do help me sir please.. details: iphone 4 cdma verizon 14.0 version: 6.1.3(10B329) carrier: verizon 14.0 unlocked to relaince cdma india model: MC676LL/A S.N: C8RGF6HVDDP7 MEID: A100001C5910FB MODEM FIRMWARE: 3.0.04 BASEBAND: 01.59.00