how to update?
This phone I want to improve my phone and I want make my own account like TikTok YouTube Instagram and Facebook thank you.
Question marked as
Whether and how far you can update your iPhone depends on its hardware model.
For example, you can update the iPhone 5s, 6, and 6 Plus to the latest version of iOS 12. You cannot update them to iOS 13 or later, and thus they are incapable of running many modern apps. If you have one of these phones and need to run apps that can't run on iOS 12, it may be time to get a newer phone.
Update your iPhone or iPad - Apple Support
Updating iOS: common issues and solutions - Apple Community