[shadi jaran]

Hi,i have an issue with my lumia 920,,
every time i try to call a number not saved to my contacts,,i cant,,it gives me a call drop ,!!!! But after i save it i can!! Wats the problem!!

[msxbox]

strange problem not sure why.... try putting your country code in front see if that works, if not try another sim card see if that changes anything...

[shadi jaran]

Ummm,very strange and drive me,crazy!! I tried ur way nothing works!! Even i updated my lumia to black ,,still the same problem

[msxbox]

the only other thing i can think to try without resetting your phone to factory settings (probably best to reset your phone though) is to update your phone with the developer preview (preview for developers) Download the Preview for Developers and get GDR3 right now | Windows Phone Central
it may have extra updates you don't have yet may help may not but this can invalidate your warranty so do at your own risk .... or did you try a sim from another network in case....good luck hopefully someone will have a better answer for you....or take your phone in to your network's phone shop and get them to have a look