Tahoe Premier 2025 screen has become very basic

I have a 2025 Chevrolet Tahoe Premier, and my vehicle does not have an OnStar button at all.

Recently, the infotainment screen has become very basic and all apps have disappeared.

Symptoms:

•No apps available (no maps, no Google apps, etc.)

•OnStar is not showing at all

•No WiFi or network connection option in settings

•The screen only shows basic functions (radio + basic settings)

Current status: The system seems completely offline or like connected services are disabled.

Questions:

•Is this normal for some models that don’t have OnStar?

•Or is this a system issue?

•Does it require a software update or reprogramming at the dealership?

Also: How can I restore the apps or enable internet connectivity?