Verizon. Ten years plus ago we moved here and had AT&T and they were so bad, I actually paid them off to fire them. My daughter's family has Sprint, having jumped from Verizon and they live half a block away. Sprint sucks for the connection and the audio quality. I've known someone who has T-Mobile here as well and he said it wasn't reliable. I dropped residential service and Verizon is the only carrier I would use. I moved my unlisted number to Verizon and only have had one caller trying to spam me and that one is blocked by Call Blocker. By the way, the spammers evidently download the list from the government's do not call list and use it to make their calls. I never registered the good number with them.
My late wife was from Sweden and we have been using Skype, both Video and their dial up wherein each number there is reached through a local number here. Works for both land lines and mobile and I think $10 lasts over a year with their rates.
