Short answer: work through the fixes in order of effort. Toggling airplane mode and restarting the router fixes most cases in under a minute. If the phone says "connected, no internet", the problem is almost always the router or the connection beyond it, not your phone.
Our WiFi Manager app can scan and analyze nearby networks like a pro, which helps narrow down whether the problem is your phone or the network.
Start here: the 30-second checks
- Toggle airplane mode on, wait five seconds, off. This rebuilds every radio connection.
- Restart the router. Unplug for 30 seconds. This clears the majority of "connected but no internet" cases.
- Check another device. If your laptop also fails, the phone is innocent — move straight to the router section.
- Move closer. Two walls and a floor will halve a 5 GHz signal.
"Connected, but no internet"
This specific message means the handshake with the router succeeded but traffic is not flowing through. Check in this order:
- Captive portal. Hotel, café and airport networks need a login page. Open any plain HTTP site to force it to appear.
- Upstream outage. Check your provider's status page over mobile data.
- IP conflict. Forget the network on the phone and rejoin so it requests a fresh DHCP lease.
- DNS failure. Pages fail but the connection is fine. Set a manual DNS of 1.1.1.1 or 8.8.8.8 in the network's advanced settings.
Forget and rejoin the network
This is the single most effective phone-side fix, because it discards a stale saved configuration.
Android: Settings → Network & internet → Wi-Fi → tap the network → Forget. Then reconnect and re-enter the password.
iPhone: Settings → Wi-Fi → tap the ⓘ next to the network → Forget This Network. Then reconnect.
Check the band you are on
Most routers broadcast two bands and they behave very differently:
| Band | Speed | Range | Best for |
|---|---|---|---|
| 2.4 GHz | Slower | Long, penetrates walls | Far rooms, garden, older devices |
| 5 GHz | Much faster | Short, blocked by walls | Same room as the router, streaming |
If you are getting a strong signal but poor speed in a distant room, you are probably clinging to a weak 5 GHz signal. If your router uses one name for both bands, split them into separate names so you can pick.
Stop Wi-Fi dropping when the screen is off
Android's battery optimisation suspends network activity aggressively. Two settings usually cause it:
- Wi-Fi sleep policy — Settings → Network & internet → Wi-Fi → Wi-Fi preferences. Set it to stay on during sleep.
- Adaptive connectivity / smart network switch — this hands you to mobile data the moment Wi-Fi dips. Turn it off if you are burning mobile data at home.
Last resort: reset network settings
This clears every saved Wi-Fi password, VPN and Bluetooth pairing on the device. Have your passwords ready first.
- Android: Settings → System → Reset options → Reset Wi-Fi, mobile & Bluetooth
- iPhone: Settings → General → Transfer or Reset iPhone → Reset → Reset Network Settings
When it is the router, not the phone
Go to the router if you see: every device slow, the connection dropping on a schedule, or speeds far below what you pay for. Worth checking there — firmware updates, channel congestion (scan for a quieter channel), and how many devices are connected at once.
A Wi-Fi manager app shows signal strength in dBm, the channel each nearby network occupies and which devices are on yours, which turns the channel-congestion question from guesswork into a reading.
Signal strength, in plain numbers
| dBm | Quality | What you'll notice |
|---|---|---|
| −30 to −50 | Excellent | Full speed |
| −50 to −60 | Good | Streams fine |
| −60 to −70 | Fair | Video may buffer |
| −70 to −80 | Weak | Drops, slow pages |
| Below −80 | Unusable | Constant reconnects |
Anything worse than −70 dBm in a room you use regularly is a coverage problem, not a settings problem. Move the router, add a mesh node, or switch that room to 2.4 GHz.
