Plan speed, Mbps and real downloads
A plan’s advertised speed is not the same as the speed of every download. Device links, overhead, content servers and shared use all affect the experience.
What to check
Check whether the plan specifies separate download and upload rates, an expected range or a maximum. Compare with Ethernet on a capable device before judging wireless results. File managers often show MB/s, while plans and this test show Mbps. Lower-case b means bits; upper-case B means bytes.
Worked example — illustrative, not a measured result
A 100 Mbps payload rate equals at most 12.5 MB/s before overhead. A decimal 1 GB file would take at least 80 seconds at that steady rate; real transfers can take longer. A 100 Mbps Ethernet port also cannot demonstrate a 500 Mbps plan. These calculations are examples, not minimum service guarantees.
What to do next
Record several dated wired tests with your device and server details. Compare them with the actual plan conditions, not an unrelated provider’s average. A slow file server may explain a slow download despite a good speed test. If comparable tests remain below the provider’s stated expectations, share the report and ask them to investigate the connection.