Are the new iPads (iPad 3) for sale in the US unlocked for the UK? I live and work in the UK, but I am in the US for 2 weeks, and was wondering if I buy the new iPad from the Apple Store here in the States, will I be able to replace the AT&amp;T or Verizon SIM with an O2 or T-mobile (UK mobile carriers) SIM? Or are the iPads sold by the Apple Store locked to US based carriers?
If you bought the device without a contract, it's unlocked!

The information about AT&amp;T and Verizon is important when talking about LTE availability in the US. Only AT&amp;T and Verizon provide LTE networks in the US that work with the iPad.


  4G LTE is supported only on AT&amp;T and Verizon networks in the U.S. and on Bell, Rogers, and Telus networks in Canada. footnote no.3 - iPad specs


This is important to note as LTE frequency bands used in Europe, Australia and probably most of Asia are not supported by the iPad. You will use DC-HSDPA, HSPA+ or UMTS instead for fast internet access.