App can't find in Google Android market

Question

I have publish a app with this AndroidManifest.xml:

<supports-screens
android:smallScreens="true"
android:normalScreens="true"
android:largeScreens="true"
android:anyDensity="false"
/>
<uses-sdk android:minSdkVersion="3" />

and with publish option Copy Protection = ON(Helps prevent copying of this application from the device. Increases the amount of memory on the phone required to install the application.), Locations = all Locations
but i found that some device can't find it in market , it including Acer liquid, sony ericsson x10 mini pro, and even a Sansung Galaxy S
Any suggestion?

Answer 1

Screen sizes are just one factor that's taken into account when deciding whether an application should show up in Android Market.

In particular, <uses-feature> tags in your manifest can also cause your application to become hidden. Even if you aren't declaring any of these, certain <uses-permission> tags can cause features to get implicitly required.

For example, if you request the android.permission.CAMERA permission, the android.hardware.camera.autofocus feature will automatically get required unless you say otherwise. Not all devices have a hardware autofocus, and your application won't be shown on these devices.

See the documentation on <uses-feature> for more info: http://developer.android.com/guide/topics/manifest/uses-feature-element.html

Also, keep in mind that if you have copy protection (aka forward-locking) enabled, your application won't show up on certain devices. The recommended alternative is to use the Android licensing service:

http://android-developers.blogspot.com/2010/07/licensing-service-for-android.html

(It's also worth noting that forward-locking will be disappearing in a few months, so you definitely should look at the licensing service if you're concerned about this. See the blog post I linked to above for more information.)