It depends on the plan, and every plan says. That daily figure is the main thing that separates one unlimited plan from another at the same destination.
The shelf runs from a few hundred megabytes a day at the cheap end up to several gigabytes a day in Pro Store. Pick the one that matches how you actually use your phone.
The amount resets at the start of each new day of the plan. Nothing rolls over.
There is no total allowance to run out. Data keeps working for every day of the plan, and you are never cut off and never asked for more money.
Each day includes an amount that runs at full speed. Once a day passes that amount, the connection carries on at the slower speed the plan states, until the next day begins and full speed returns.
Both numbers are printed on every plan before you pay: how much runs at full speed each day, and what speed it continues at. We do not hide either in a fair-use footnote.
The connection keeps working, at the reduced speed printed on that plan, for the rest of that day. Nothing stops and nothing is charged.
At the start of the next day of the plan, full speed comes back on its own. You do nothing.
The reduced speed is enough for messaging, maps and browsing. Video at that point depends on the plan: the faster continued speeds handle it, the slower ones will struggle.
No. Unused data does not roll into the next day or the next plan, and it is not refunded.
On an unlimited plan this barely matters: there is no pot to waste, only a daily full-speed amount that resets.
On a fixed-data package it matters more. Buy the size you will use rather than the size that feels safe.
Ask us — a person answers, usually within one working day.