For a while now I have not been able to use this app to check my data usage etc as it says "No network available ...". It used to work fine so I assume something changed at O2 Central end. Was this an intentional decision or an oversight or bug?
Actually the loss of function may have coincided with me upgrading to a 4G SIM last December but I can't swear to that.
Not a biggy as I can still check on my laptop or tablet and using the Data Sense app although the latter sometimes gets a little out of sync with what O2 have recorded as my usage.
The MyO2 app is only supported on Apple and Android now.