Quick answer
Gigabit internet means the service can deliver very high speed to the modem/router. Wi-Fi devices often see less because of signal strength, device radio limits, channel width, interference, and shared airtime.
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Advertised speed and Wi-Fi speed are different
The plan speed is usually measured at the service handoff, not on every phone in every room. Wi-Fi adds distance, walls, interference, and device limitations.
What is normal
A modern device near a good router can be fast, but 1,000 Mbps over Wi-Fi is not guaranteed. Wired Ethernet is the better way to test whether the gigabit service itself is arriving.
What to check before you spend money
- Run a wired test if possible.
- Test a modern device near the router.
- Compare 5 GHz or 6 GHz against 2.4 GHz.
- Check whether older devices are limiting results.
- Retest away from busy evening hours.
What not to do yet
- Do not expect every room to show gigabit over Wi-Fi.
- Do not upgrade plans to solve a Wi-Fi-only limitation.
- Do not compare an old phone to a wired gigabit result.
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