2.4GHz has better range but slower speeds. 5GHz is faster but shorter range. Use 5GHz near router, 2.4GHz for distant devices.
Factor
2.4GHz WiFi
5GHz WiFi
Speed
Up to 100 Mbps
Up to 1300 Mbps
Range
✅ Longer (150 ft)
❌ Shorter (50 ft)
Wall Penetration
✅ Better
❌ Worse
Interference
❌ High (many devices)
✅ Low
2.4GHz WiFi
Lower frequency with longer range but more interference.
✓ Pros
Longer range
Better wall penetration
Compatible with all devices
Works far from router
✗ Cons
Slower speeds (max ~100 Mbps)
More interference from devices
Crowded frequency band
5GHz WiFi
Higher frequency with faster speeds but shorter range.
✓ Pros
Faster speeds (up to 1 Gbps)
Less interference
Better for streaming/gaming
✗ Cons
Shorter range
Poor wall penetration
Some older devices incompatible
The Verdict
Use 5GHz for devices near the router (same room). Use 2.4GHz for devices far away or through walls. Most modern routers broadcast both — your device will auto-select.
Frequently Asked Questions
Which is faster: 2.4GHz or 5GHz?
5GHz is much faster — up to 1300 Mbps vs 100 Mbps on 2.4GHz.
Why does 2.4GHz go through walls better?
Lower frequency waves are longer and can penetrate solid objects easier than higher frequency waves.
Should I disable 2.4GHz?
No. Keep both enabled. Devices far from the router need 2.4GHz to maintain connection.