My city is adding a new digit to its number to increase the number of combinations possible. I have over 300 contacts, editing them manually is not really a good way to do that.
98% of my contacts is on the + XX ( country code ) + XX ( state code ) + XXXXXXXX ( the number ) format.
I need to add the digit 9 to every number, so after running a program script whatever every contact should be +XX XX 9XXXXXXXX .
Bonus : I have contacts from people of other cities who must stay the same if possible I would like a solution like this : if state number is XX then skip it. But is better to manually change this group of contacts than all the contacts from my city so it's OK if that's not possible