If your iPhone 7 started having Wi-Fi problems after updating to iOS 11.3.1, you’re not alone. Many users noticed connection drops, super slow browsing, or being unable to connect at all. This guide walks you through simple and advanced fixes you can try to get your Wi-Fi working properly again.
Restart Your Router or Modem
Before you blame your iPhone, make sure your router isn’t the problem. Routers can crash too, especially after long periods of uptime.
Here’s how to reset it:
- Press the Power button on your router or modem to turn it off.
- Unplug it from the wall for about 30 seconds.
- Plug it back in and turn it on.
- Wait for all lights to stabilize — no red lights should be flashing.
Once your internet is stable, check your iPhone’s Wi-Fi connection again.
Reboot Your iPhone (Soft Reset)
Sometimes all your phone needs is a quick restart to fix weird post-update bugs.
To do a soft reset:
- Hold down the Power button until you see “Slide to power off.”
- Drag the slider to turn off your iPhone.
- After about 30 seconds, press and hold the Power button again until you see the Apple logo.
This won’t erase any data — it just refreshes the system.
Toggle Wi-Fi Off and Back On
A quick Wi-Fi refresh can solve minor connection hiccups.
Here’s how:
- Go to Settings > Wi-Fi and turn Wi-Fi off, wait a few seconds, then turn it back on.
Or use Control Center:
- Swipe up from the bottom of the screen and tap the Wi-Fi icon to disable it, then tap it again to re-enable.
Forget and Reconnect to Your Wi-Fi Network
If your saved Wi-Fi settings got corrupted during the update, forgetting the network and reconnecting can help.
Here’s what to do:
- Go to Settings > Wi-Fi.
- Tap the (i) next to your connected network.
- Tap Forget This Network and confirm.
- Restart your iPhone.
- Go back to Settings > Wi-Fi and connect to your network again by entering your password.
Reset Network Settings
If nothing has worked so far, resetting your network settings can wipe out bad configurations without touching your personal data.
To reset:
- Go to Settings > General > Reset.
- Tap Reset Network Settings.
- Enter your passcode if asked and confirm.
Your iPhone will reboot, and you’ll have to reconnect to Wi-Fi manually afterward.
Other Things to Try
- Factory Reset Your iPhone: If the update seriously messed things up, you might need a full reset. Backup your data first, then go to Settings > General > Reset > Erase All Content and Settings.
- Restore from a Backup: Use iTunes or Finder to restore your iPhone from a backup made before you installed the update.
- Contact Apple Support: If you’re still stuck, reach out to Apple or your carrier for help. They might recommend service or have a patch available.