Nokia has confirmed  that smartphone  Lumia 710  is a bug that shows a connected call even after it has been hung up and is working to resolve it.

Many users have reported on the Nokia support forum , it is impossible to end a call by pressing the appropriate button on the display by finding the unique solution to turn off the device. However Nokia has wanted to reassure users by indicating that it is just a display bug as the call would still closed after pressing.

 

The Nokia said it is working to resolve the problem and soon will release a “fix” via Zune .