[Q] S3 Lose Network Conectivity

[En_croute]

On a regular basis (at least once a day), I lose Network connectivity.
The Upstream/Downstream arrows disappear, but I still have 4-5 bars.

Happens Indoors & Outside
Applications report no Network available.
I don't have any power saving apps that disable networks
Android Power saving is disabled.

I'm on 4.1.2, (Vodafone Stock ROM, Unlocked) and this has been happening for a while - from ICS 4.0.1, I believe.
I switched from T-mobile to GiffGaff (O2 UK), but I can't remember if this was happening before the switch.
Unable to make call ("Not registered on Network") when this happens.

Sometimes a toggle of the "Mobile Data" button works, sometimes toggling to "Flight mode" works.
More often than not, this requires a restart. Always fixes it immediately,
Other O2/GiffGaff users are unaffected, so not a network issue.

Any idea if this is an S3 issue, a GiffGaff (O2) issue (any other sufferers on different handsets), or a combination of both?!

Cheers
Sean (En_croute)

 

[slaphead20]

Ask your provider for a new SIM, might be SIM problem

 

[JJEgan]

Check your O
2 network coverage where its a problem .


You should also check you are using Giffgaff settings in mobile networks .

 

[En_croute]

Check your O2 network coverage where its a problem .
You should also check you are using Giffgaff settings in mobile networks .

Setting changed earlier today (Proxy & Port details)
Still dropping off (this evening)

It's not a network issue (other users & instant restoration on reboot), so any ideas folks?

 

[slaphead20]

Are you using any power saving apps?

 

[En_croute]

Are you using any power saving apps?

No
"I don't have any power saving apps that disable networks
Android Power saving is disabled"