As there are plenty of Vodafone UK masts close by, it might be worth @steamship trying Voxi or Lebara. Do note that Voxi doesn't include free EU roaming, though (although it does include roaming in Ireland).
The US version of the iPhone 14 only supports eSIM, not physical SIMs. The UK version supports both eSIM and physical SIMs. So as long as you haven't bought the US version, you should have no problems using Smarty. If you have, you won't be able to u...
Yes, it is strange that it's not connecting to any of Three's masts that are clearly closer to you. Don't get me wrong, there can be circumstances where obstructions between you and a mast, and/or the frequency bands in use on a mast, mean that your ...