iPhone 4s No service plz Help !!!!!

problem:

When my Iphone 4s Was running on ios7.1.2 ..due to fast charge consumption i Erase All content Setting on iphone ..the process did not complete for several Hours then i had rebooted from erasing...after that i have only searching for and no service on my status bar.. So i updated,to ios 8.1.1 but problem Still continues
When i switch carrier to manual searching.. I can find all towers near by me...even if i select carrier manually i still get no service..on automatic it keeps searching for carrier then goes to no service and phone heats a bit... Please help me


solution:

1. just wifi & itunes conect done insahallah
2. open back pat chek network antina conectsion and agein conect wifi or itunes 10000% solved insahallah ?

or fix date and time and reset network setting then connect to itunes