Overview
Wi-Fi trouble is usually one of three things: the phone's connection to a specific network, the router, or the device's network settings. Working through them in order finds the fix fast — and the same logic applies to Bluetooth and cellular, so we point those out along the way.
Symptoms you might see
- The phone won't join a known Wi-Fi network.
- Wi-Fi is connected but there's no internet.
- The Wi-Fi toggle is greyed out or won't turn on.
- The connection keeps dropping or is very slow.
Possible causes
- A temporary glitch on the phone or router.
- Incorrect network settings or a bad saved password.
- Router problems or an overloaded network.
- A software bug, or Airplane Mode / VPN interference.
- In rare cases, a Wi-Fi hardware fault.
Step-by-step troubleshooting
Work through these in order — the earliest steps are the safest and fix the most cases.
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Toggle Wi-Fi and Airplane Mode
Turn Wi-Fi off and on in Settings or Control Centre. Then toggle Airplane Mode on for 10 seconds and off again to reset the radios. This clears the most common temporary glitches.
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Restart the phone and the router
Restart your device, and power-cycle your router by unplugging it for 30 seconds. A stale router is behind a surprising number of 'phone' Wi-Fi problems — test another device to confirm.
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Forget and rejoin the network
Go to Settings › Wi-Fi, tap the network's info button, choose 'Forget This Network', then rejoin and re-enter the password. This fixes a bad saved configuration.
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Check for blockers
Make sure Airplane Mode is off, disable any VPN temporarily, and turn off Low Data Mode for the network. These can all prevent a proper connection.
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Renew the lease
In the network's settings, tap 'Renew Lease' to request a fresh IP address. This resolves 'connected but no internet' situations.
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Update the device software
Install any pending update — connectivity bugs are frequently fixed in software. If Wi-Fi is down, update via a computer or another network.
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Reset network settings
Settings › General › Transfer or Reset Device › Reset › Reset Network Settings. This clears all saved Wi-Fi passwords, Bluetooth pairings and VPN/APN settings, returning the network stack to defaults. You'll need to rejoin networks afterwards.
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For Bluetooth, SIM and cellular
The same approach works for other radios: toggle the feature, forget/re-pair the Bluetooth device, or remove and reseat the SIM for cellular issues. For 'No Service', also confirm your plan is active and try Reset Network Settings.
Before you go further: back up your device to a cloud backup or a computer whenever possible. Steps that could affect your data are clearly flagged — and for suspected hardware faults, a qualified repair professional is the safest next step.
Prevention tips
- Keep the device software and your router firmware updated.
- Avoid overcrowding one Wi-Fi band; use 5 GHz when close to the router.
- Note your Wi-Fi password so you can rejoin after a reset.
- Restart your router periodically to keep it healthy.
Frequently asked questions
Why does my device say 'No Internet Connection' on Wi-Fi?
The phone joined the network but can't reach the internet — usually a router issue. Restart the router, renew the lease, and test another device. Reset Network Settings if it persists.
Why is my Wi-Fi toggle greyed out?
This can be a software glitch or a hardware fault. Restart and update the device software first. If the toggle stays greyed out and unresponsive, the Wi-Fi hardware may need service.
Related guides
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