im a new iphone user so im trying to understand.
I had 6.0 when I got my phone from my brother in Ireland. 6.1 came out and installed that then installed evasion JB. installed around 10 different jb apps.
im having one issue thats annoying me all the time. many times, exactly when I come to make a call it says "searching" in the left corner. cant find signal and no cell phone name is written. just exactly when I come to use it and many times it will hang like this for many minutes and I have to reboot. I contacted my carrier and we tried some configuring which doesnt help. not sure if its the phone or the sim.
I have another "limited" (almost like a prepaid) line with them on a POS nokia phone that I hold as an emergency line in case my main line doesnt work. when it does searching on my iphone 4, the nokia does work for calls. the iphone never fell/or physically abused and is in mint condition.
My brother kept warning me to upgrade to 6.1.2 which is more stable and that might fix the issue. but I was working so much and didnt have time.
I did see a website where you can download 6.1.2. cant I just download that and then JB? what does it mean apple not signing the firmware? cant I just disconnect from the internet and just install it? I apologize but im new to iphones. im just trying to understand.
thank you for your time.