Haven't seen one in POP, but sosua there's a claro by the liquor store on P. clisante, and the orange is right after Baileys next to the bank. If you
decide on Claro, there's a guy with a phone store just past the intersection Pedro clisante, Dr. Rosen, on the right side walking away from the strip,
it's not very far, before the old secrets, (forgot new name) he's a good guy to deal with, can hook you up with anything including jail braking you phone.