I gave my iphone4 to my son and requested it to be unlocked by O2. I followed the instructions after email saying it was now unlocked & connect to itunes with Vodafone sim card. I did this, it was successful and accepted the sim card, but the phone just says No Service. I tried manually changing the carrier to Vodafone but the message says “restricted network – your selected mobile network is restricted. You can choose a different network in Settings”. Please help!
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It sounds as if it hasn't been unlocked successfully by O2. You may have to do it again. Have a look at this help link http://community.o2.co.uk/t5/Other-Products-Services/Unlocking-an-O2-phone-to-use-a-different-SIM-card/td-p/540294
Unlocking form here
If you still have no success then you need to contact customer services http://www.o2.co.uk/contactus
*The Game Is On*
The sim card is working, it has all the Vodafone details on the phone & my son's settings etc, it's just the No Service problem. My son's on contract with Vodafone (he actually lost his iphone6 & forgot to change his insurance - yes he's an idiot) so he's still going to be paying £50 per month. They sent him a new sim card that should work on the iphone4. I'll tell him to contact Vodafone again.
Thank you all for your help
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