when doing face time activation a message occours , "an error occured during activation . try again

Hello there punitfromjorhat.

It seems you're having issues activating FaceTime on your iPhone 5. The following Knowledge Base article offers up some great steps for troubleshooting:

If you get an error when trying to activate iMessage or FaceTime

Check your device settings

1. Make sure that you’re connected to a cellular data or Wi-Fi network. If you're using an iPhone, you'll need SMS messaging to activate your phone number with iMessage and FaceTime. Depending on your carrier, you might be charged for this SMS.
2. Go to Settings > General > Date & Time and make sure that you've set up your time zone correctly.

Turn off and restart iMessage and FaceTime

1. Go to Settings > Messages and turn off iMessage.
2. Go to Settings > FaceTime and turn off FaceTime.
3. Restart your device.
4. Turn iMessage and FaceTime back on.

Still not activated after a day?

It might take up to 24 hours to activate iMessage and FaceTime. If you've waited more than 24 hours, follow these steps:

1. Make sure that your device has the latest version of iOS.
2. If you're using an iPhone, contact your carrier to make sure that you can receive SMS messages.
3. Contact Apple Support.

Thanks for being a part of Apple Support Communities.

Cheers.