galaxy S2

[Anonymous]

Hi There, Tried to make calls,getting message(not connected to network)

[Cleoriff]

Take your sim out, clean it gently. reinsert it and try again @Anonymous

[MI5 · Accepted solution]

Check for network issues http://status.o2.co.uk/
Try your sim in another phone or another sim in your phone.
Sometimes a reboot will fix it but others a new sim is required or could even be a faulty phone.

Some generic help here too http://community.o2.co.uk/t5/Pay-Monthly-and-Pay-Go/Self-help-guide-Is-the-network-down-for-me-or-ev...

[Bambino]

Fairly ancient (4 years) by today's standards. @Anonymous is this an old phone of yours or did you just get it from somewhere else?

[Curr946]

Have you dropped it? You may have damaged the antenna.

[Anonymous]

thanks for the help .tried your idea but it still failed so put in old sim,allOK

[MI5]

You need to pop into an o2 shop and ask them for a sim swap.

[jonsie]

You have a new sim, that explains it.

Do the sim swap either by going instore or use the form here : Swap my sim

You can also text SWAP to 20220 from your old sim and follow the instructions.