giffgaff and o2

    anyone know if my giffgaff sim will work on a phone locked to o2? i thought they shared the same network but just wondering



    Original Poster


    comfimed on my daughters iphone4, and my sons SE W350i, both were locked to O2

    Yes they work with the o2 network and will most likely work with a tesco mobile locked mobile (not too sure but tesco use o2 too.)

    GiffGaff or Tesco Mobile SIM in O2 locked phone: Works

    O2 or GiffGaff SIM in Tesco Mobile locked phone: Doesn't work.

    O2's phones are open to Giffgaff and Tesco but stingy Tesco lock their down from any other networks.
    Edited by: "oldmanhouse" 12th May 2011
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