iPhone SE only connects to Wi-Fi after unlocking

Hello everyone,

Who could help me with the following problem?

When I turn on my business iPhone SE, it doesn't immediately connect to the Wi-Fi network, only to the regular network. I have to unlock my iPhone first. As soon as I do this, it connects to the Wi-Fi network immediately.

It's important that my business phone is also connected to the company Wi-Fi network. This is because I also have a secondary job as a company emergency responder (ERO). When I'm connected to the Wi-Fi, all EROs see that I'm there. In the event of an emergency, I receive a notification, just like all other EROs connected to the Wi-Fi network.

Why doesn't my iPhone connect to a Wi-Fi network right away? When I turn on my own iPhone 16, or earlier models of iPhones I've owned, they connect immediately without me having to unlock them first.

Thanks in advance for your tips.

Sander

(IOS is up-to-date)

[Re-Titled by Moderator]

Original Title: No wifi before first inlog (Iphone SE)