No service on iPhone 5

[Anonymous]

Hi, hoping someone can help!  I upgraded my iPhone 4 to an iPhone 5, on the 16th December, although as the 5 was a christmas present I didn't actually have the phone until yesterday.  Suring the period of time between ordering the 5 and Christmas day I was able to use my iPhone 4 as normal.  

The iPhone 5 is still saying no service, and I suspect the sim hasn't activated.  I removed the sim from the iPhone 4 and and reset it (to give to my daughter!) and I hoped this would kick start the sim in the 5!!!

I've restarted the 5 numerous times, and also reset the network settings, but still no service!  Any ideas what else I could do?

Thanks

[Liquid]

Have you actually done a sim swap?

[Anonymous]

I haven't done anything, I presumed (wrongly it seems!) that as i upgraded through o2, that it would all be done for me!

I read about sim swap this morning, and put in my phone number but of course because I reset the iPhone 4, I have no way of accessing the text message!

[Liquid · Accepted solution]

Just put your old sim back into the iPhone 4 then txt swap to 20220 and follow the instructions:)

Don't worry it's easily solved:)