htc droid dna call forward problem

  123general 06:54 12 Sep 2013

I have htc droid dna & airtel connection registered from delhi. whenever i try to divert/forward a call using *21mobile number# then it says "Connection problem or invalid MMI code" and nothing happens, what do i do ? please assist

This thread is now locked and can not be replied to.

Elsewhere on IDG sites

WPA2 hack: How secure is your Wi-Fi?

HP’s new Surface Pro rival is designed specifically for Adobe-using designers and artists

Best kids apps for iPhone & iPad

Que faire si son iPhone ou iPad est tombé dans de l'eau ?