How Can fix Activation Error message in my iPhone 4?

How Can fix "Activation Error" message in my iPhone 4?

Few months ago I bought a iPhone which was running very slow so I took it to a Mobile shop one of the technician said once restore to factory setting it will be ok. Then I said do it. After restored to factory setting there's a message coming like this

Activation Error
"Activation request could not be completed. If the problem persists, please contact customer care."

when I buy this phone the shop people did not give me any activation code only they gave receipt. I do not have any code to activate my iPhone except receipt, so what can I do, how can get activation code or is there any technic to pass away this "Activation Error" message anyhow, anyone advice me how can fix this issue.

  • What is MF Message Error Domain error 1032? - 1 My iPhone keeps displaying this message and its really annoying. I have read that deleting your yahoo email profile can resolve this but will it erase all my emails currently on my iPhone. Or will it redownload them when I re-register my yahoo email account?
  • Trying to restore jailbroken iPhone 4, getting Itunes error 3194 and error 11 I want to wipe my jailbroken iphone 4, on ios 5, so i can update to ios 7. I used tiny umbrella and managed to get past the 3194 error, but then I'm getting error 11. I have tried to erase and reset through the phone only, but it simply shows an endless loading ticker, and not the apple logo and loading bar. How can I reset my phone? Thank you for anyone who can help! I also have the latest itunes
  • Why isn't my phone number on tmobile updated to my other phone? How to fix message blocking error? I got this iphone from my dad because he got a new phone. He let me use my grandmas old line and I got a new sim card. I tried texting and then getting this Message blocking error, i went on tmobile and the phone number is still on my grandmas old phone, why isn't it updated to my phone
  • Iphone stuck in activation error? Hi. I have an iphone4 and i updated it to ios7 in june. But just now when i turned on my iphone i have the "activation error" screen. On itunes when i try to restore it, it says " iTunes can't restore this iphone because "find my iPhone is on" I don't know what this is, and i can't turn it off because of the state of my phone. Also my power button is not functioning, so i can't put it into "DFU" mode? Please tell me how i can fix this