You can make bold text on iPhone or iPad and improve readability of text content.
You can set up call forwarding on iPhone if you are using cellular service through a GSM network.
If your iPhone updated with iOS 14 or later i.e. iOS 14, iOS 15, iOS 16 etc. you can manage pages on iPhone home screen. i.e. You can hide home screen pages on iPhone easily.
If your iPhone is updated with latest version of iOS 16, iOS 15 etc. then you can scan document using iPhone or iPad Files App. You can easily Scan Documents, Photos, Visiting Card etc. So if you are creating a digital copy of the document, it is better to use iPhone Files app.