Here is a list of tips that you can try if you are experiencing slow Wi-Fi, wi-fi connection dropping or unable to join Wi-Fi networks from your iPhone or iPad following the iOS 13 update. Disable the Wi-Fi using the Settings app, restart your device and then enable Wi-Fi. Sometimes this simple operation can fix most Wi-Fi annoyances.How do I troubleshoot Wi-Fi problems on my iPhone or iPad?
Restart all of your devices, then try to enter your password again. If iOS 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.How to change Wi-Fi settings in iOS 13 and iPadOS?
In iOS 13 and iPadOS, there is another layer of the feature. When you 3D touch the Wi-Fi icon, you will now see the name of the network that you are currently connected to along with a list of other networks that are available to you. You can also tap on ‘Wi-Fi Settings…’ on this screen and access the settings directly.Why won't my iPhone connect to the Internet?
The first one which many will likely encounter is related to WiFi. Either the network won't connect or just fail to find it. No need to panic though. Your WiFi router didn't magically break down after the iOS 13 update. Here's how you can fix it right away.