I'm interested to port in to Digi postpaid 80, where I can upgrade to 20GB all-day internet with only RM5
I wonder, if I want to add supplementary lines (i.e. internet sharing), can I still upgrade to 20GB all-day internet

eg
RM80 (digi postpaid 80) + RM5 (upgrade 20GB all day internet) + RM38 (supplementary line) + RM10 (charges for internet sharing)
--> 2 lines sharing 20G all day internet, both unlimited calls, for RM133
-- does it work this way?
-- or there is a clause where internet sharing is not eligible for RM5 upgrade to all day internet???

and whether this is free tethering?

Thanks

That works?

That makes the Postpaid 110 with all-day 25GB looks expensive
- for a difference of RM25, Postpaid 110 gets extra 5GB only + unlimited weekend data