Understand the control's purpose
Windows documents a metered connection as a way to control and reduce data usage, with some updates, syncing and application behaviour restricted. It is not the same thing as the carrier's record of remaining allowance. A media player continuing to stream does not by itself prove the metered setting is broken; the application and platform's documented behaviour matter.
Low-data modes on other platforms also have their own scope. Apple documents changes to particular services and background activity, and applications can respond differently. Do not assume that a similarly named switch creates one universal quality level or guarantees that a long viewing session will remain within a plan.
A hypothetical laptop on a hotspot
Suppose a viewer connects a Windows laptop to a limited phone hotspot and marks the network as metered. Some background activity changes, but an authorised video still plays. The next question is the player's actual data use and quality controls, not whether the network switch promised to block every media request. Check the allowance through the carrier's normal route.
Before a long session, identify the applicable network, device setting, player options and remaining plan allowance. Use documented controls you understand. A player quality label should still be verified for the selected source; choosing a display size is not necessarily a lower-data rendition. Keep estimates qualified where the actual stream rate is unknown.
If the system provides a separate data-limit or warning feature, read its own documented effect. A warning threshold, reduced background use and a provider-enforced cutoff are different mechanisms. Do not rely on one because another screen uses the same number. Record which control was set and what it is intended to do.
Check the whole viewing route
Observe a short authorised sample and the relevant usage record if the allowance permits it. Include the hotspot provider's statistics when the viewing device is not the mobile device itself. Confirm which application or device category the record describes instead of comparing unrelated counters.
The useful outcome is a deliberate viewing plan with a known allowance, understood device controls and a bounded estimate or measurement. It should not promise that a metered label prevents every charge. If data is insufficient for the intended session, use an authorised route that fits the actual terms rather than assuming the setting will make unlimited viewing possible.
Questions answered
Should metered mode stop every player from using data?
Do not assume that. It changes documented platform and application behaviours; the carrier's allowance remains a separate record.
Is a data warning the same as a carrier cutoff?
No. Check what each device control and provider plan actually does.
Sources & further reading
Official references for the subjects discussed. Service terms and device software can change.