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tarantella
Rising star

Which network do Three UK phones roam onto when in the USA ?

1 REPLY 1
sc1999
Local celebrity

The 3 sim should logon to 3's preferred network but sometimes it is necessary to manually select a network and I don't think it matters which network you select. If 3 does not have an agreement with that network the I don't expect your phone will work.

If you are going for more than a few days you may be better off with a local sim and you can buy these from Amazon UK.