I already bypassed the iCloud activation screen on my iPhone 4 iOS 7.1.2, but when I insert my sim card I see No Service at the top. How to fix no service error on my iPhone after iCloud Bypass?
- I tried to replace the plist files, downloaded from internet, but still No Service.
- I connected my iCloud account to the device, and tried to login into iCloud.com and erase the device, but the device was not attached to my account.
- All other features are working fine, but my iPhone can't connect to a GSM network. When I insert my sim card, it asks for a pin code, but after I enter my pin, the No Service still appears at the top.
- I also tried to activate airplane mode, and insert my sim, then deactivate it. But still the same problem - NO Service.

I have the latest iOS version - iOS 7.1.2 on my iPhone 4 installed. I want to resolve the service problem, and use my phone to make calls, messages, etc.
Please help me.
Alejandro