Unlocked iphone not activating sim over wifi

[Anonymous]

I have an unlocked iphone4 that was locked to the o2 network. When I try to activate a sim of a different carrier over wifi it doesn't activate, it says no service. 

[Cleoriff]

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@MI5 wrote:

There's nothing wrong with the flippin' phone

Edit: Apart from it being an iPhone 

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And there speaks to voice of reason...