Knowledge Base

Can't get the phone working

Started by: henrikwigernas
On: 23/11/2013 | 19:12
Replies: 12

by: henrikwigernas
on: 23/11/2013 | 19:12


Joined yesterday and still can't get the phone to work (24h later). No Internet, no sms, can't make calls...

- Have an iphone 4s from 02. 

- Phone unlocked by O2

- Sim activation successful "Just confirming your activation was successful."

- Have a new phone number.

- Bought a £12 goodybag and have £5 credit.

- Installed the Internet settings described on this forum for my phone and OS.

- It says O2-UK and 3G on the screen, good coverage.

- SMS's aren't delivered.

- Can't call, just get a bipbip and then it cuts off.

- No Internet when I disable wi-fi. 

- Removed SIM and rebooted multiple times

- Reset settings and added again.


Is it an issue with the SIM? How can I test the SIM?


Please advise,


Message 1 of 13
by: free_bee
on: 23/11/2013 | 19:29

Can you get hold of another handset (unlocked or locked to O2) in which to test your SIM?

Message 2 of 13
by: kaleem7877
on: 23/11/2013 | 19:30
Download the giffgaff app using wifi then it will install all giffgaff settings needed for your phone

Click on the banner below for your free giffgaff sim with £5 free credit

Get a free giffgaff SimPlease give me a kudos or a best answer if i helped. Appreciated.
Message 3 of 13
by: johngould
on: 23/11/2013 | 19:33

Check that your phone is not in Flight Mode.

Message 4 of 13
by: gooner01
on: 23/11/2013 | 19:38
Try the settings in this guide
Message 5 of 13
by: sauron
on: 23/11/2013 | 19:54

You need to try the sim in another phone to see if the sim is working as it should and also try if possible another GG sim in your phone

Get a free giffgaff Sim
Message 6 of 13
by: henrikwigernas
on: 23/11/2013 | 20:55
Thanks, tested but didn't help. Will have to try to test the SIM on another phone.
Message 7 of 13
by: henrikwigernas
on: 23/11/2013 | 20:56
Thanks, tested but didn't help I'm afraid. Will try to get hold of another phone to test the SIM.
Message 8 of 13
by: ravisid
on: 23/11/2013 | 21:03

Please follow the below steps to the letter if you are facing network issues in your area -
hope this helps.

1, See if theres any faults here by typing in your post code @ (alternative site - giffgaff operates as a Mobile Virtual Network Operator using the o2 / Telefonica Network
2, Turn On airplane mode ( if you have this option ) And then turn Off after about 20 seconds
[ Alternatively ] Take the battery out for 30 seconds and then place in back in and power On the handset Etc ( This option is not for iphones and any other phones that your carnt take or get the battery out the handset )
3, Try
4, Hand clean the sim Very Soft
Message 9 of 13
by: ravisid
on: 23/11/2013 | 21:04
You are having problems with sending or receiving SMS/texts then this trick might resolve the problem.

1. Go to settings 2. Then go to mobile networks 3. Select a network other than O2 (gg) i.e orange or tmobile. 4. Come out of settings and it should say no network coverage or something similar. 5. Repeat the process this time choosing O2 (gg) which should update the message centre and hopefully restart the texts.

The message centre number in your message settings should be +447802002606

On an iphone then it's a slightly different process.

1. Go to settings 2. Go to carriers 3. Switch off automatic and manually change the carrier to something other then O2-UK i.e vodafone or orange. 4. Come out of settings and wait until it fails to connect to the other carrier. 5. Once it fails repeat the process and this time choose O2-UK

For a shortened link to this guide click below

And maybe worth trying a reboot/restart your phone
Message 10 of 13