Weak Wi-Fi is usually a placement, interference, or capacity problem, not a mysterious setting. Start with free fixes before buying new hardware.
Quick wins
- Move the router to a central, elevated spot away from microwaves and thick walls.
- Raise antennas vertically (if adjustable).
- Prefer 5 GHz near the router for speed; use 2.4 GHz for range through walls.
- Update firmware: firmware update guide.
- Change the Wi-Fi channel if neighbors crowd yours (auto is fine on many modern routers).
When to add hardware
- Mesh system for whole-home coverage
- Wired access point for a distant room with Ethernet
- Avoid cheap “boosters” that half your speed on the same channel when a mesh node would work better
Settings that sometimes help
- Enable band steering if clients roam poorly
- Reduce transmit power only if you are causing upstairs/downstairs interference in apartments
- Use QoS so one download does not starve video calls: bandwidth limits
FAQ
Will changing my Wi-Fi password improve coverage?
No. Password changes improve security, not radio range. Guide: change Wi-Fi password.
Is my ISP speed the problem?
Test near the router on Ethernet or 5 GHz. If speed is fine there but poor in another room, it is coverage. Check public IP tools only if you are diagnosing WAN issues: What is my IP?.
Related: troubleshooting hub, Wi-Fi connected but no internet.