Application not appearing in the Market for some devices

I have an application published in the Android Market. Its target is 1.6 and its minSdkVersion is 1.5. The only persmission it uses is INTERNET. My Manifest file looks like this:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="XXX"
      android:versionCode="1"
      android:versionName="1.0">
    <application
        android:label="@string/app_name"
        android:icon="@drawable/icon">
        <meta-data android:name="android.app.default_searchable"
            android:value="XXX" />
        <activity android:name="XXX"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="XXX">
            <intent-filter>
                <action android:name="android.intent.action.SEARCH"></action>
                <category android:name="android.intent.category.DEFAULT"></category>
            </intent-filter>
            <meta-data android:name="android.app.searchable"
                android:resource="@xml/searchable" />
        </activity>
        <activity android:name="XXX">
            <intent-filter>
                <action android:name="XXX" />
                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name="XXX"
            android:theme="@android:style/Theme.Black.NoTitleBar.Fullscreen"
            android:screenOrientation="landscape"
        />
        <activity android:name=".Favorites" />
        <provider
            android:name="SearchSuggestions"
            android:authorities="XXX"
        />
    </application>
    <uses-sdk android:minSdkVersion="3" />
    <uses-permission android:name="android.permission.INTERNET"></uses-permission>
</manifest>

(I XXXed stuff I can't show)

I recently got an email from a user saying the application doesn't show up in the Market on an HTC Wildfire. I looked it up and the Wildfire is a QVGA (LDPI, 240x320) device running Android 2.1. The app does appear for MDPI and HDPI devices. Also, I can start up a QVGA 2.1 emulator and install the application without a开发者_运维技巧ny problems.

What is causing this?

Your application does not support QVGA, by which I mean it lacks a <support-screens> element stating that it supports QVGA and it has a minSdkVersion of 3. Android applications that do not state they support QVGA are blocked from QVGA devices on the Market, under the assumption that GUIs will not scale smaller very well automatically. Simply add the appropriate <supports-screens> element to resolve your problem.

Another common cause of application absence (or in some cases disappearance), is the use of the copy protection flag on publication. If you set this checkbox, applications will not appear on phones running "unofficial" versions of the operating system. More information in this thread.

the app doesn't show up in the market, then may be it is not a "app-problem"...

did you check with that user how he access the market and search on your app?

you also can give the full url to your app and ask the user to open it on his phone

the url could be:

market://details/?id=com.xxx.xxx (your activity package)