Why android:installLocation="internalOnly" is not working?
<p>In my manifest file I have given <code>installLocation="internalOnly"</code> in the manifest tag and below in my upper part of manifest: </p>

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.flexsin.classified"
android:versionCode="1"
android:versionName="1.0" 
android:installLocation="internalOnly" &gt;

&lt;uses-sdk android:minSdkVersion="8" /&gt;

&lt;uses-permission android:name="android.permission.INTERNET" /&gt;
&lt;uses-permission android:name="android.permission.READ_PHONE_STATE" /&gt;
&lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" /&gt;

&lt;application
    android:debuggable="true"
    android:icon="@drawable/logo_new_icon"
    android:label="@string/app_name" 
  &gt;
    &lt;activity
        android:name=".SplashActivity"
        android:label="@string/app_name"
        android:screenOrientation="portrait" &gt;
        &lt;intent-filter&gt;
            &lt;action android:name="android.intent.action.MAIN" /&gt;

            &lt;category android:name="android.intent.category.LAUNCHER" /&gt;
        &lt;/intent-filter&gt;
    &lt;/activity&gt;
</code></pre>

<p>I have send a mail with APK and when i clicked on Install button, it shows me, 
    " The  attachment could not be downloaded because the SD card is missing or not
    mounted".
    My question is why it is showing this message, when I want my apk to install on Phone
    memory.</p>

<pre><code>Phone mem available space=50Mb
Phone model: Samsung GT-S5570
</code></pre>

<p>PS: device does not have SD card. </p>
