How to unlock an iphone to all networks?

My phone was recently stolen so my network provider send me a new sim card but I still had no phone so my sister is letting me use her old I phone 4s because she upgraded to the I phone 5 but the problem is I'm on o2 and her phone is locked to orange is there anyway to unlock it?

Yes, go on oranges website and find the pages about unlocking. Follow the instructions and your phone will be unlocked

When my wife who is on 3 network gave me her old iphone (i'm on Vodafone) I brought it to the vodaphone store and they helped me and gave me a free simcard, you should go to an 02 store and ask them to help unlock it for you

You can attempt to do this one AndroidUnlock.us

I've used them in the past and have had only good experiences.

I know of a solution in the market through which you can factory unlock your iPhone using your IMEI # which is located at the back cover of your iPhone
I used http://www.OfficialPhoneUnlock.com 's services to get my iPhone unlocked and it's hassle-free & fast so I don't have to worry about jailbreaking all the time once there's a new iOS upgrade or something. It can automatically unlock and update the firmware via iTunes. Then you can use it with any other GSM carrier worldwide
So yeah try it out, hope it works for you.

Hope this helps you out!

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