You can only rollover your unutilized All Day Internet quota up to a maximum GB every bill cycle.
The list shows you how much Internet you're entitled to rollover for the All Day Internet Quota:
Digi Postpaid 80: 2GB
Digi Postpaid 120: 3GB
Digi Postpaid 160: 4GB
Digi Postpaid 190: 5GB
How do I sign up for Internet Rollover feature?
As long you sign up on the eligible Digi Postpaid plans, this feature will be available to you automatically. No sign-up is required.
What happens if I have a balance Internet quota of more than the maximum allowable limit to be rolled over?
Any extra Internet quota more than the allowable limit will be forfeited.
How many times can I rollover my unutilized Internet quota?
Your unutilized Internet quota will be automatically rolled over to the next bill cycle, once every bill cycle (provided you stay active on the same plan).