WiFi "Speed" is Slow on 2.4GHz but Fast on 5GHz
4.5
Your old laptop is slow, but your new phone is fast on the same WiFi network.
Symptoms
- Slow legacy devices
- Fast modern devices
- Interference
Possible Causes
- 2.4GHz congestion
- Bluetooth interference
- Older WiFi standards (802.11n)
Step-by-Step Fix
1
Change 2.4GHz Channel Width
Set it to 20MHz instead of 40MHz to reduce interference.
2
Disable Bluetooth
Bluetooth and 2.4GHz WiFi fight for the same airwaves.
3
Upgrade the Device
If a device doesn't support 5GHz, it will always be slower in a crowded area.
When to See a Technician
2.4GHz is like a single-lane road with lots of traffic; 5GHz is a multi-lane highway.
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