I can’t update my ios

Note: Your battery is not charged more than 50%. Charge you iPhone to more than 50% and then try updating again.

Requirements to start and install an Update on an iPhone-

• The phone must be charged to over 50%
• Low Power Mode must be OFF
• You cannot be connected through VPN
• You must have a Wi-Fi connection (not cellular)
• You should plug in the phone or put it to charge to assure it stays on and connected to Wi-Fi.

Axel F.

You may need to update using iTunes on a computer. Instructions are at the link below.

Update your iPhone, iPad, or iPod touch - Apple Support

In addition to the good help you have already received, how much Available storage do you have, under Settings -> General -> iPhone Storage?

You need significantly more Available storage than the size of the install package. Something on the order of three (3) times that much or more. (This will vary depending upon iPhone model and the particular update.)

iOS 12.4.1 is not current for any model of iPhone. Go to: Settings - General - iPhone Storage - there check for an iOS update file and delete it. Restart the phone and check for an update again.

From what I can see in your latest image, you should have plenty!