on 06-10-2013 13:20
I previously posted a comment asking if my giffgaff sim would work in my O2 phone and I was told it would but when I tried my phone said "sim failure"....help please
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on 06-10-2013 13:23
on 06-10-2013 13:23
check if there are any problems in your area http://status.o2.co.uk/
a quick restart and/or a reboot of the device can help you get reception on your phone. If these don't help then sometimes you may need to restore the device to factory settings (how it was when you took it out of the box) but then you will need to reinput your internet settings.
Turn On Airplane Mode (if you have this option) And then turn back On after about 20 sec 'or' Take the battery out for 30 seconds and then place it back in and power up (not for Iphone users Etc). Turning the device into airplane/offline mode and back into normal mode can, a lot of the time, get you a bar or two of reception in bad coverage areas but also full reception if it just a temporary network issue
Also try to hand clean the sim very carefully then re-insert it
Try a manual roam, this refreshes your connection to the network which can help with calls, texts and data. Follow the instructions below if you're not sure how to do this
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
5. Repeat the process this time
choose O2(gg) and this will update your number to the message centre
and should help your texts
Also check the message centre number in your message settings should be +447802002606
on 06-10-2013 13:25
"SIM failure" suggests a faulty SIM, or the SIM has not been inserted correctly.
If the wrong SIM was inserted in a locked handset, it would normally say "Invalid SIM" or ask for a Network Unlock Code.
Are you sure your phone is locked to O2, and not some other MVNP that runs on the O2 network (e.g. Tesco Mobile)