For revert or people learning to pray. They could have a customized Iman for every prayer.
For Fajr, they can pick the surah they want.
Than an Iman would lead like in a mosque but would say everything even when in sujood.

Even how to pray tarawee or nafila. It's like a step by step guide but it would be played instead so the person praying won't have to carry the phone.