Speed depends on how busy that cell is, where you are standing and the handset. Headline numbers are always best-case.

One speed test costs roughly 30 to 50MB, so test sparingly and judge from real use instead, such as whether a short video stutters.

Daily plans usually restore full speed at the day boundary; fixed-volume plans often stay throttled until the plan ends.

Lean toward the lower category. Real speed through the day tends to drift, and is rarely as steady as the single figure you typed in.

No. It only matches the figure you enter against pre-set activity categories. Measuring real network speed needs a separate speed-test app, and each run of that genuinely costs data.

Usually a background app such as a system update or photo backup is competing for the speed left over at the same moment, or user density in that spot is higher than expected. Neither is something this tool can foresee.

That depends on the specific plan's own policy. Daily plans usually restore full speed at the next day boundary; fixed-volume plans often stay throttled until the plan expires. Check the plan's own spec page directly.

Only as often as genuinely needed, since each run costs real data. If all you want to know is whether one activity still works, briefly trying that activity itself is usually faster to read and cheaper than repeated tests.