+441234 567 890
00441234 567 890
01234 567 890
only suggestions i can think of
from looking at my own application,it already has +44 before the box where you put your number in so you would just put 1234 as your area code in the first box then 567890 in the second box for the rest of your phone number.no zero at the front.
mobile number you would just put the first THREE numbers after the 0 in the first box,then the rest of your mobile number in the second box
so for example
if your number is 07970 123456
in the first box you put 797
then in the second box you put 0123456