With Family Plan, all of your accounts will be under one bill and charged to the Primary account holder.
Your monthly bill, consisting of the Primary SIM and Sub SIM(s), will be automatically charged between the 1st to 7th of each month, to the credit/debit card attached to your mobile plan.
Any additional charges incurred from each linked SIMs will also appear in the consolidated bill sent to the Primary SIM account holder’s email.