There's an 'educational' video showing one of the possible outcomes:
SeaQuest 2032, Season 2, episode "Playtime".
Observe how many great inventions either come from the military researches, or end up being used as weapons.
As if currect VR sokutions were not bad enough they add mixed reality (which is even harder to achieve well... by a considerable amount) to complete the collection of bad products we can from mobile manufacturers.
I suggest actually perfecting the phone design before trying any gimmick.
(One handed use, yet durable big screen / infinte autonomy ... all quite possible w current tech). Btw none delivers in those despite selling like hot cakes if they were too. Fix ergonomy and portability and you are in for some major compensation...