Step1 - Go to your hosts file from "C:\Windows\System32\drivers\etc\hosts".
Step2 - Open hosts with Notepad and add following magic line.
Step3 - Connect your iPad/iPhone/iPod to your PC (via USB) and open iTunes.
Step4 - Wait for the message box with: iTunes can't verify the identity of the server "albert.apple.com" , then click "Continue". You are done! You successful bypassed iCloud activation.
If you don't know how to edit your hosts file then please go through the following article.
Do you have this error below ?
Reboot device in iTunes without SIM card .. and then put SIM card in and follow the steps, Or disconnect iTunes and reboot phone, close iTunes and reopen.