estimate time remaining And can't update My phone Please Help me 14.3 version

You are using a hotspot to update your iPhone. That will NOT work. You will need to connect your iPhone to a Wi-Fi Network to download, install and verify the update. I notice that you are also using Low Power Mode. You will have to turn Low Power Mode to OFF as well. Then try gain.

Axel F.

You have (at least) 2 problems:

1. You are connected to a cellular hotspot. This won’t work, you must have a Wi-Fi connection.
2. Your phone is in low power mode.

And it looks like the battery is below 50%. It must be above, and it is best to update with the phone plugged in so it doesn’t drop below 50% during the update.

I can't update my iOS an software

What do you see when you go to Settings/General/Software Update?