Given the number of needless changes Samsung make to the core of Android, 
I'm constantly surprised that any Samsung device can even (a) turn on and 
(b) make a phone call. I know that doesn't help you, but hopefully it lets 
you realise you are not alone and since Samsung won't even respond to 
developers on their own developer forums, you have no choice but to try and 
deal with it yourself.

In fact you're more lucky than most people - you have a way of testing your 
app on a real Samsung device - I don't have that luxury. Just stick a lot 
of debugging messages into your app in as many places as possible and then 
install it on your friend's phone and check the logcat. The messages should 
at least point to an area to concentrate on and then keep doing this until 
you hopefully find the problem. Good luck!

On Monday, 5 November 2012 07:01:50 UTC, Rob Thompson wrote:
>
> My friend installed my app on his phone, and it hangs.  It's just a black 
> screen with the app title in the Google bar.  However, in the emulator, it 
> works on 4.0.3, 4.1, 2.*, etc...It also works on a Huawei 2.2 device, and 
> the Toshiba Thrive 3.1.
>
> Am I supposed to purchase every Android phone to make sure my app works? 
>  What am I supposed to do?
>
> Thanks.
>

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