Forgive me if this has been asked & answered elsewhere, but if so, I couldn't find it.
Every month I hit my data allowance... so every month I reset my mobile data usage (in the mobile data setting) so I can keep an eye on it.
Without fail, I get a message from O2 saying that I have used my inclusive allowance (1GB), but my phone setting say that I should still have some left... it might not be much, but ~80mb every month adds up.
Does anyone know why the mobile usage on my phone would be less reliable than the network provider?