I have a problem connecting to my wifi network after I updated my phone to the latest version iOS 16.7.1

Hey there oppong290,

Thanks for reaching out to the Apple Support Communities.

For help with troubleshooting issues with your iPhone not connecting to Wi-Fi as expected, give the steps listed in the following resource a try: If your iPhone or iPad won't connect to a Wi-Fi network - Apple Support

1. Make sure that your router is on and that you're within range

If you're too far from your Wi-Fi router, you can't get a signal, so make sure that you're within range.

2. Make sure that Wi-Fi is on and that you can see your network

Go to Settings > Wi-Fi and make sure that Wi-Fi is on. Tap the name of your Wi-Fi network to join. A blue checkmark beside a network name means that you're connected.

If you see Auto Join disabled under Settings > Wi-Fi > [Your Network], tap the More Info button and then tap Auto-Join.

3. If asked, enter your Wi-Fi password

If asked, enter the password for your Wi-Fi network. Get help if you don't know your password.

Even if you enter the correct password, you might see an "unable to join the network" message or an "incorrect password" message. Restart all of your devices, then try to enter your password again.

4. Check for issues with your Wi-Fi network

If iOS or iPadOS detects an issue with your Wi-Fi connection, you might see a Wi-Fi recommendation under the name of the Wi-Fi network that you're connected to. For example, you might see the alert "No Internet Connection." To get more information, tap the Wi-Fi network.

5. Check your cables and connections

If you still can't connect to your network or get online, make sure that your router is connected to the modem and turned on.

6. Restart

Restart your iOS or iPadOS device.

Restart your router and cable or DSL modem by unplugging the device and then plugging it back in.

After you restart each device, see if you fixed the issue.

7. Reset your network settings

If you're using iOS or iPadOS 15 or later, tap Settings > General > Transfer or Reset [Device] > Reset > Reset Network Settings.

If you're using iOS or iPadOS 14 or earlier, tap Settings > General > Reset > Reset Network Settings.

This also resets Wi-Fi networks and passwords, cellular settings, and VPN and APN settings that you've used before.

Let us know if that's able to help.

Take care.

I wish this problem solved quickly!