When using Air SIM for Global, data usage is calculated based on the local country's minimum billing unit. If the actual data usage is less than the minimum billing unit, the data usage will be rounded up to the minimum.
For example, when using Air SIM for Global in a country where the minimum billing unit is 100KB, if your data uses 20KB of data, it will be rounded up to 100KB, and charges will be based on this amount.
For detailed information for country-specific data usage, please contact us.