Give us an example of when you would need to do this...
Tap on what I've circled in red in the following image, and you'll see the letters.I was trying to call USCIS customer service for knowing my Visa status and there I was asked to enter my receipt number which starts with alphabets.I cannot enter aplhabets from the dialer keypad ,so I cannot find my status over the phone.This Nokia Lumia 920 lacks these basic features which other phone provides.I am very much frustrated with this phone. Does anyone know if there is any way to fix this.