if your application is server dependent then in server side create
admin panel. admin will able to add mobile number
next save auth flag in ur application ( shared pref or in  database )
false. whenever user will use ur application first time then flag will
b null then check for authentication and save true/false value

Moktarul

On Feb 16, 4:30 pm, "[email protected]"
<[email protected]> wrote:
> hi,
>        I want to restrict my android app to just open on specific No.
> of mobiles that i want. how can i do that?
>
> Thanks and Regards
>
> umer

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