It looks like your iPhone is having trouble connecting to Wi-Fi, and you've already restarted your router and deleted and reconnected to your network. I'm happy to provide some help for this issue.
You've done most of the steps in the following article, so I'd recommend going ahead and jumping to step 7:
If your iPhone, iPad, or iPod touch won’t connect to a Wi-Fi network - Apple Support
Still can’t connect?
Reset your Network Settings. 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.
Get more help
- If someone else set up your network, ask them for help. If you’re using a network at a company, school, hotel, store, or other free Wi-Fi location, find an employee for assistance.
- If you're connected to a Wi-Fi network but you can’t get online, try to use your Wi-Fi network on other devices. If you can’t get online using your other devices, there might be a service outage. Call your cable company or internet provider for help.
- Try connecting to a Wi-Fi network in a different location. If your device can connect, you need to get help with your Wi-Fi network. If your device can’t connect to any Wi-Fi networks, contact Apple.
- Update your Wi-Fi router with the latest firmware and make sure that the router supports your Apple product. For more information, contact the router's manufacturer.
Thanks for using the Apple Support Communities. Cheers!