Symptoms
- Wi-Fi shows connected but no internet works
- Network requires password again and again
- Wi-Fi toggle is on but no networks appear
- Other devices connect fine to the same network
Likely causes
- CommonIncorrect or outdated saved passwordIf the router's password changed, the phone keeps trying the old saved one.
- CommonRouter or modem needs a restartRouters can develop temporary glitches that block new connections until restarted.
- PossibleCorrupted network settings on the phoneA specific saved network profile can become corrupted and refuse to connect properly.
- PossibleRouter's device limit reachedSome routers cap the number of connected devices, blocking new ones.
- Less commonWi-Fi hardware issueA hardware fault would typically prevent connecting to any network, not just one.
What to do
- Confirm other devices can connect to the same Wi-Fi network to rule out a router-wide issue.
- Go to Settings > Wi-Fi, tap the (i) next to the network, and select Forget This Network, then rejoin with the correct password.
- Restart the router and modem by unplugging for 30 seconds and plugging back in.
- Restart the iPhone to refresh its network stack.
- Go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings if the issue persists (this also resets saved Wi-Fi passwords and Bluetooth pairings).
- Check if the router has a device limit or MAC filtering enabled in its admin settings.
- Move closer to the router to rule out signal strength as the cause.
- If other devices also fail intermittently, contact your internet provider about the router or service.
When to call a pro
If only your iPhone fails to connect to multiple different networks, an Apple Store or repair shop can test the Wi-Fi hardware.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.