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.
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.
On an unlimited plan, the usual reason is the daily full-speed amount. Once a day passes it, the connection carries on at the slower speed printed on that plan until the next day begins, when full speed returns.
The other reasons are local: coverage where you are standing, the time of day, and how busy the network is. We buy access to local networks and cannot make them faster than they are.
Check which network the phone is on, and try picking another by hand. A different operator in the same place can be a different experience.
Inside the daily full-speed amount, yes, at whatever the local network can deliver.
After that amount is used, it depends on the plan’s continued speed. The faster continued speeds carry video; the slower ones are for messaging, maps and browsing rather than streaming.
If video matters to your trip, pick a plan with a larger daily amount and a faster continued speed. Both numbers are on every plan.
Both are unlimited data. They differ in how much runs at full speed each day, and in the speed the connection continues at once that daily amount is used.
Basic suits everyday browsing, messaging, maps and booking rides. Enhanced Speed gives a larger daily full-speed amount and a faster continued speed, which leaves more room for social feeds and video.
Every plan prints both of its own numbers before you pay. Pro Store carries larger daily amounts again, for people who want more.
Ask us — a person answers, usually within one working day.