I get this alert message (screenshot from my phone) from my carrier after using the internet for sometime. The problem is that I get numerous messages (20+) like this when my phone is idle. I guess some apps are syncing in the background. The phone is unusable till I hit OK on all the alert boxes. Is there a way (or an app) to make sure that I do not see these messages.
This looks like a special kind of SMS message, sometimes called "flash SMS", that shows up instantaneously on the phones screen. I don't think that there is an option to block these messages and even if it would be possible I wouldn't encourage you to do so, because you could maybe miss some other important information.
I think the best approach would be to ask your carrier from disabling these messages for your number. I am sure that they are able and happy to do so.
You can install this app to block the Flash messages
This Does not support Android 4.2.2
This is a problem with your carrier where they send the last data usage details whenever a data connection session ends. It is not possible to disable it unless the network provider disables it.
However, you can try this small workaround by going to
Settings in options, and disabling
Cell Broadcast settings.