[Ramana Reddy1]

Hi,
Iam a new comer to wp central.Iam in India. Recently I bought a lumia 920 from my friend which is brought from Thailand. Some times there is call dropped problem.Others calling to me are said that your phone is saying that phone is not in coverage area. But when I changed the sim card to nokia n95 8gb there is no problem. Can anybody explain me how to overcome this problem?

[Jazmac]

You might have your cell phone carriers re-provision your device. Have you talked with them yet?

[tebugg]

Hi,
Iam a new comer to wp central.Iam in India. Recently I bought a lumia 920 from my friend which is brought from Thailand. Some times there is call dropped problem.Others calling to me are said that your phone is saying that phone is not in coverage area. But when I changed the sim card to nokia n95 8gb there is no problem. Can anybody explain me how to overcome this problem?

sounds like a sim card problem. i'd take the phone back to the store and tell them your problem.