Well talking about Lumia 730, its an selfie phone with 5 MP front camera while its primary camera is of 6.7 MP with autofocus.
No doubt the camera quality is awesome as it is a carl zeiss optics.With corning gorilla glass 3 it has internal memory of 8 GB & external memory support is upto 128 GB that’s a lot for storage purpose.Its 1 GB RAM is enough for running heavy apps without any lag.
The main reason for suggesting this phone is its excellent battery backup, it comes with 2200 mAh battery which gives upto 17 hours of talktime.So for those who usually runs out of battery can go for this phone.