Wi-fi connection dropped on my iPhone

Alaahas wrote:

I updated to the latest version 16.4.1 and the problem persists. No, it is not normal, the phone loses connection when the screen is closed

It is 100% normal. All iPhones from the beginning of iPhone time 16 years ago disconnect from Wi-Fi 30 seconds after the phone screen locks, to preserve battery energy, unless the phone is connected to power. This is done because a Wi-Fi connection uses power continuously, whether data are transferring or not. Cellular connections use more energy, but only when actually sending data. There are a few exceptions:

• If you are streaming audio or video Wi-Fi will stay on
• If you receive a notification Wi-Fi will reconnect for a few seconds to process the notification
• And, I think (but I’m not sure) if an app uses Background App Refresh it can wake and use Wi-Fi; however very few apps actually use Background App Refresh.

Like or not, the Wi-Fi disconnects when the phone is locked. It is supposed to reconnect when the phone is activated.

Try a Forced Restart........Restart your iPhone - Apple Support

There are only 2 possible results when you perform a Forced Restart:

1) The phone returns to normal operation

2) The phone has a hardware problem that will need attention at the Apple Store or authorized Apple Service shop

Find Locations

Update to iOS 16.4.1 for the latest bug fixes and security.

When your screen locks, the Wi-Fi is disconnected. This is normal. The phone should reconnect when the screen becomes active.