on my iphone 11. when I restart my phone the apple logo is keep blinking and not turning on.

Apple 11 is stuck on Logo. I have tried to restart several times, it comes back to the Logo. I logged on to itunes and did an upgrade but still stuck on the Apple Logo.

What do i do now?

Apple support sucks! I have to go to YouTube to solve every problem, and there is many. My iPhone 11 turns black, will not recognize facial I’d (half of the time)! Sometimes the phone

doesn’t work. No ringing. My I watch rings, not phone. I’m too frigging old for this! My older (19&17) grandsons don’t understand what is going on.

See if this link helps...

If your iOS or iPadOS device restarts or displays the Apple logo or a spinning gear unexpectedly - Apple Support

And this one...

If your iPhone is stuck on the Apple logo - Apple Support