Conditions for mobile phones: If you don't use the data included in your rate on the current month, they'll roll over to the next. The rolled over data is used first. They'll only roll over from one month to the next. Additional data from bonus will not roll over. Surpassed navigation data: Browse at 16 kbit/s an additional 1 GB without cuts. The use of this service is not allowed for specific electrical, electronic and/or telecommunications systems or equipment, such as a 3G/4G modem.