[Monthly SIM card/eSIM] What happens if I do not use all of my data. Will the unused data be rollover? February 11, 2025 03:48 Updated Yes, the unused data will rollover only for 1 month.Please see the examples below. Related articles What is data allowance ? When will new data be allocated? [Monthly SIM card/eSIM] Will the unused data be rolled over? How do I Top Up more data on my monthly Voice+Data/Data Only SIM card? [Monthly SIM card] What will happen after I use all of my SIM's high-speed data?