Stay connected with 4G while travelling in the UK with British local phone service and mobile data. 3 offers the UK"s lowest pay as you go rates. This Trio card contains standard, micro and nano SIM cards to fit any phone. Requires a compatible unlocked mobile phone. Simply insert the Sim card in your phone and call 444 to topup, or visit three.co.uk. Standard rates are 3p/min talk, 2p/text and 1p/mb data. Call USA phone numbers for only 3p/min, by dialing 424 00 1 followed by the 10-digit phone number including area code. Topup vouchers can be bought at thousands of locations throughout the UK, including in most airports, gas stations & grocery stores.