Originally Posted by
ranatalus
My new position has me traveling between the UK and US very frequently, and I have been researching getting a UK SIM card to use in my phone, instead of using a crappy work-assigned phone, or spending a ridiculous amount of money by roaming with Verizon. It looks like a SIM from Three will work mostly fine in my A1533 iPhone 5S (as the only unsupported LTE band is band 7, 2.6 GHz).
Does anyone have more specific experience with this? Is this something that other people would find useful if not?
When I was in the UK over the summer, I used my A1533 iPhone 5S on 3 UK. No issue. I believe it's the only carrier in the UK for which the VZW 5S has all LTE bands. You even get the "HD" voice on 3 on the 5S. Also, instead of LTE, you'll see 4G on your phone as an indicator.
The fastest I got on 3 UK was ~25mbit(At the Doctor Who experience in Cardiff(hey, had to upload my photos to dropbox somehow!)).