Sounds like years ago here in Italy, when all carriers asked thousand € to all users for overpassing MBs or internet hrs limits but they blocked sims only after 48 hrs.
There was a scandal, all users get refunded (me too)
Now, all carriers in Europe istantly limit your traffic at 38 kbps (just texting) when you overpass your account limit, and send a warning sms.
Data limit is a average o.s. extimation, obviously it will never be the same as carrier.
Each carrier got a myapp which shows on live tiles real time data , mins and accounts
08-25-2016 12:53 PM