A Wi-Fi extender (also called a repeater or booster) picks up your router's signal and rebroadcasts it. When your phone or laptop shows it's connected to the extender but nothing loads, the device is fine: the problem is either the extender's link to the router, or the router itself.
These steps work for any brand of extender or repeater. Menu names differ between makers, so keep your extender's manual or app handy.
Stand near the router and connect your phone to the router's own Wi-Fi network, not the extender's.
Most extenders have a light or app screen showing how well they connect to the router. A red, orange or blinking light usually means a weak or lost link. Your extender's manual explains what each colour means.
This is the most common fix. An extender placed in the dead spot receives a weak signal and can only pass on a weak one, and it may lose the link entirely at times.
Test again after each move.
If you (or your internet provider) changed the router's Wi-Fi password or network name, the extender is still trying the old one. Devices can still join the extender, but it can't join the router.
Open the extender's app or web setup page and enter the new router password. If you can't get into its settings, reset it (Step 8) and set it up again.
Many extenders let you choose whether they connect to the router on 2.4 GHz or 5 GHz. 2.4 GHz reaches further through walls; 5 GHz is faster but shorter-range. If the link keeps dropping, set the extender to use 2.4 GHz for its connection to the router (often called the "uplink" or "backhaul"), then test.
If the extender's link light is fine but devices on it still get no internet:
ipconfig.Turn off any "DHCP server" option in the extender's settings unless its manual says it should be on; normally the router should be the only device handing out addresses.
A reset erases the extender's settings only, not anything on your router or devices.
If your extender has an Ethernet port and supports "access point mode", connecting it to the router with a network cable replaces the weak wireless link with a solid one. Powerline adapters can carry that connection over your home's electrical wiring where a cable run isn't practical.
If the extender keeps losing the router even when placed well, it may be too old for your router's settings, or the distance may simply be too great. A mesh Wi-Fi system, whose units are designed to work together, usually gives more reliable whole-home coverage.
If the extender connects fine but the connection keeps cutting out, see Wi-Fi keeps disconnecting. If only one PC has no internet on any network, go to Wi-Fi connected but no internet.
The extender is only as good as its own link to the router. If that link drops, is too weak, or uses an old Wi-Fi password, devices still connect to the extender but nothing reaches the internet.
About halfway between the router and the area with poor coverage, where the router's signal is still good. Placing it in the dead zone itself gives it too weak a link to pass on.
Yes, for most extenders. They keep the old password and can no longer join the router. Update the password in the extender's app or web page, or reset and set it up again.
Mesh systems are designed to work together and manage their own links, so they usually handle large homes better. An extender is a cheaper add-on to an existing router.
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