Yes, It has 3.5 mm music jack.
Yes, Samsung Galaxy J7 comes with non-removable battery.
Yes, Galaxy J7 Max does support smart view.
Yes, Samsung Galaxy J7 Max does have smart glow indicator on the back side of the phone, near rear camera.
Yes, you can put 2 4G SIMs and a Memory card also at the same time in Samsung Galaxy J7 Max. Galaxy J7 Max does have 2 dedicated sim card slots and a dedicated slot for memory card.
Samsung Galaxy J7 Max is worth considering if updated software and a great camera are your priorities.