Why my phone doesn’t update?
Why my phone doesn’t update?
Why my phone doesn’t update?
Click on the link to read how to "Update your iPhone, iPad, or iPod touch" --> https://support.apple.com/HT204204 - When you try to update you will only be given one update selection which will be the highest available iOS version supported by your device.
If you think it should go to a higher version then you will have to tell us what error messages you are using. Your question as it stands does not provide much information for use to help you with.
Why my phone doesn’t update?