Android Native Or Html5 To Use In A Transactional Offline/online Mobile App

I am going to develop a mobile application used by our company salesmen to make orders and DB transactions. initially we target mobile with android OS. I have 2 option for the tech

Solution 1:

ability to lock all phone features (other app, camera, sim card and so on) and allowing salesman to open and access only our developed application.

You wont get anywhere close to this behavior from an html 5 app. And even if you go with native (unless you're willing to modify the OS) you aren't going to be able to completely lock it down like you are wanting.

Either way my vote is for a native app. At this point native is ( in my opinion ) always going to provide you with a finished product that is nicer to use.