How do I resolve persistent connection issues after recent iPhone updates?

It sounds like you've been very thorough with troubleshooting and have covered the necessary steps because you stated that you have tried everything listed in this forum. Since the issue persists, it could be a more complex hardware or network-related problem. Here are some additional actions you can consider:

1. Perform a Diagnostic Test:

• You can run diagnostics on your iPhone through Apple Support. Use the Apple Support app or visit Apple's support website 👉  Official Apple Support  and request remote diagnostics to identify any hardware issues.

2. Contact Your Carrier:

• If the connection issue relates to calls, your carrier might be experiencing network problems or there may be compatibility issues with your service.

3. Visit an Apple Store:

• If hardware is at fault, the best course of action would be to visit an Apple Store or authorized service provider for a thorough inspection and repair.

Axel F.

Connection issues how? Wifi or cellular? Do you by chance use a VPN on your iPhone. The more information you provide might help you get better targeted options. Otherwise, we can only guess what the exact issue and what things you've actually tried.