Unable to connect to Wi-Fi or Bluetooth on iPhone 12 after full reset

Start by making sure Airplane Mode is turned off in your settings.

Then try toggling Wi-Fi and Bluetooth off and back on again, either through the Settings app or the Control Center.

You can also try forgetting the Wi-Fi network by going to Settings > Wi-Fi, tapping the “i” next to the network, and selecting “Forget This Network,” then reconnecting.

If that doesn’t help, go to Settings > General > Transfer or Reset iPhone > Reset > Reset Network Settings.

This clears out any corrupt or conflicting network configurations.

It’s also a good idea to check if other devices can connect to the same Wi-Fi network or Bluetooth device to rule out an issue with the accessory or router.

Make sure your iOS is up to date by checking under Settings > General > Software Update, as new versions may contain important bug fixes.

If you’ve tried all these steps and the issue persists, you might consider performing a DFU (Device Firmware Update) restore, which reinstalls both the firmware and the operating system.

If you’re interested, I can guide you through that. However, if Wi-Fi and Bluetooth remain grayed out or won’t turn on, there could be an underlying hardware issue—especially if the problem began after a reset.

In that case, contacting Apple Support would be the best course of action.

If both the Wi-Fi and Bluetooth on your iPhone are grayed out and cannot be connected, that would mean the hardware chip for those has failed and as a result you need service at your nearest Apple Store’s Genius Bar or Apple Authorized Service Provider.

Genius Bar Reservation and Apple Support Options - Apple