- Charging within usable period + have remaining data;
Usable period will extend one day and 1GB will be added to the remaining data.
- Charging after usable period or after you used up all the data;
You can use 1GB until 23:59 on the day you have made charge.
Meaning if you make charge at 22:00, you can only use it for only two hours.
Therefore we recommend you to charge before your useable period expires.