Wifi connection

novyanto Said:

"Wifi connection: I mean this is my wifi extender, not my main router. I can’t access that after updated iOS 15"

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Range Extender:

All the Range Extender does is amplifies the signal. So, it is not the Range Extender giving you the issue. It is the iPhone itself.

Troubleshooting iPhone WiFi not Working:

Try the following in the order provided:

I. Start Here: If your iPhone, iPad, or iPod touch won’t Connect to a Wi-Fi Network - Apple Support

II. What Else to Try:

A. Restarting the iPhone:

If any changes were made (i.e. Installed Apps), then Settings (i.e Wf-Fi), may have become manipulated technically. So, try restarting the iPhone:

1. Go To: Settings
2. Tap: General
3. Tap: Shut Down
4. Slide: Your Finger to the Right

B. Disable Cellular:

Try disabling Cellular, and using Wi-Fi instead, seeing if that makes all the difference. Cellular always overrules Wi-Fi.

C. Try Manually Restarting your iPhone:

1. Go To: Settings
2. Select: General
3. Scroll to: the Very Bottom
4. Select: Shut Down
5. Slide Finger: to the Right
6. Wait: 30 Seconds
7. Power One: the iPhone
8. Try this Once More

novyanto Said:

"Wifi connection: Why i can’t access my router setup page after updated iOS 15? the router setup page isn’t in any trouble, i can access with other devices"

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Use the Default Gateway:

Looking at the bottom of you screenshot, you are trying to open a Web site. So set this up, you likely need to use the Default Gateway. Enter either of these IP Addresses into the Address Bar.

• 192.168.0.1
• 192.168.1.1

and...

Configure with a Computer:

I recommend that you configure all of this using a computer, as it would be more user-friendly doing so.