New sim won't work, keeps saying No Service?

[Anonymous]

So I have bought a new iPhone 5 and although I've done the sim swap on O2 twice now and waited for 24hrs my new phone still keeps saying No Service.

Also, it says that my mobile number on my new phone is unknown, does this mean that the sim isn't active?

HELP!

---

[MI5]

Is the old sim still working? Have you rebooted and or reset the new phone? Can you try your sim in another phone?

[Anonymous]

Yes the old sim is still working which is concerning, and yes I have but to no avail. 

Sadly I can't as no one else has an iPhone 5 and they have a much smaller sim, my old phone is an iPhone 4 but the sim is too big to fit in my new phone so I can't try swapping them. 

[Anonymous]

Also I have both switched my new phone on and off as well as doing the soft restart but it still keeps saying No Signal

[MI5 · Accepted solution]

If the old sim is still connected it means the swap has failed. Try texting SWAP to 20220 from your old sim.

[Anonymous]

I did as you said and it worked, thanks so much! 

[MI5]

Excellent news

[Anonymous]

Drives me mad....why can't they make it simple? I've ordered the deal....they've sent the chip! I should be able to just put the thing in and it should work!! But no....you have to go through all the rubbish first....fgs

[MI5]

---

@Anonymous wrote:
Drives me mad....why can't they make it simple? I've ordered the deal....they've sent the chip! I should be able to just put the thing in and it should work!! But no....you have to go through all the rubbish first....fgs

---

All you have to do is activate the sim - It would be no good if someone else got hold of your sim or it got lost in the post and anyone could run up a huge bill on your account would it?

[Anonymous]

My phone says no service selected o2 uk unavailable , it was working an hour ago .