android - Application not installed error on real devices -

i have android app running on genymotion emulator(google nexus 5 -4.4.2). not installed on of real devices have tried far (all of them between 2.3 4.0).

i have tried solutions given in this question.

here androidmanifest.xml

<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android"     package="com.vishal.app"     android:versioncode="1"     android:versionname="1.0" >      <uses-permission android:name="android.permission.internet" />      <uses-sdk         android:minsdkversion="8"         android:targetsdkversion="15" />      <application         android:allowbackup="true"         android:icon="@drawable/ic_launcher"         android:label="@string/app_name"         android:theme="@style/apptheme"  >         <activity             android:name=".mainactivity"             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=".activityeventslist"             android:label="@string/title_activity_activity_events_list" >         </activity>         <activity             android:name=".activityeventdetails"             android:label="@string/title_activity_activity_event_details" >         </activity>     </application>  </manifest> 

project build target 4.4.2 (api 19). installing app apk file copied sd card.

here's logcat:

08-18 22:50:49.964: i/activitymanager(249): start {dat=file:///sdcard/app.apk cmp=com.android.packageinstaller/.packageinstalleractivity} pid 3626 08-18 22:50:49.974: d/audiohardwaremsm7x30(138): value of device , enable 6 1 08-18 22:50:49.984: d/kernel(129): [ 4310.567504] [msm7x30.c:msm_device_put] device speaker_mono_rx set 1 08-18 22:50:49.984: d/kernel(129): [ 4310.567565] [msm7x30.c:msm_device_put] device freq =48000 08-18 22:50:49.994: d/kernel(129): [ 4310.575408] [adsp.c:msm_adsp_get] module afetask has been registered 08-18 22:50:49.994: d/kernel(129): [ 4310.575469] [adsp.c:msm_adsp_enable] enable 'afetask'state[0] id[17227119] 08-18 22:50:49.994: d/kernel(129): [ 4310.582550] [adsp.c:adsp_rtos_mtoa_cb] rpc event=0, proc_id=2, module=17227119, image=0 08-18 22:50:49.994: d/kernel(129): [ 4310.582611] [adsp.c:adsp_rtos_mtoa_cb] module afetask: ready 08-18 22:50:50.044: d/kernel(129): [ 4310.623260] msm_snddev_poweramp_on: power on amplifier 08-18 22:50:50.044: d/kernel(129): [ 4310.623474] [adsp.c:msm_adsp_get] module audpptask has been registered 08-18 22:50:50.044: d/kernel(129): [ 4310.623535] [adsp.c:msm_adsp_enable] enable 'audpptask'state[0] id[17227122] 08-18 22:50:50.044: d/kernel(129): [ 4310.626739] [adsp.c:adsp_rtos_mtoa_cb] rpc event=0, proc_id=2, module=17227122, image=0 08-18 22:50:50.044: d/kernel(129): [ 4310.626800] [adsp.c:adsp_rtos_mtoa_cb] module audpptask: ready 08-18 22:50:50.044: d/kernel(129): [ 4310.632873] [audpp.c:audpp_dsp_event] enable 08-18 22:50:50.054: d/kernel(129): [ 4310.637115] [adsp.c:msm_adsp_write] audpptask command took 64 attempts: rc 0 08-18 22:50:50.074: i/eframe(3639): pkgname_before:com.apkinstall  class:com.android.packageinstaller.packageinstalleractivity 08-18 22:50:50.214: w/inputmanagerservice(249): starting input on non-focused client com.android.internal.view.iinputmethodclient$stub$proxy@2c655218 (uid=10126 pid=3626) 08-18 22:50:50.284: i/activitymanager(249): displayed com.android.packageinstaller/.packageinstalleractivity: +263ms 08-18 22:50:50.514: d/surfaceflinger(121): release buffer @ 0x97b98 08-18 22:50:51.594: i/activitymanager(249): start {dat=file:///sdcard/app.apk cmp=com.android.packageinstaller/.installappprogress (has extras)} pid 3295 08-18 22:50:51.784: d/dalvikvm(3295): gc_concurrent freed 296k, 4% free 9229k/9607k, paused 6ms+4ms 08-18 22:50:51.804: i/audiohardwaremsm7x30(138): routing audio speakerphone 08-18 22:50:51.844: w/activitymanager(249): no content provider found permission revoke: file:///sdcard/app.apk 08-18 22:50:51.994: i/activitymanager(249): displayed com.android.packageinstaller/.installappprogress: +363ms 08-18 22:50:52.124: d/openglrenderer(3295): flushing caches (mode 0) 08-18 22:50:52.214: w/activitymanager(249): no content provider found permission revoke: file:///sdcard/app.apk 08-18 22:50:52.224: d/surfaceflinger(121): release buffer @ 0x5d5b8 08-18 22:50:52.234: e/packageparser(249): package com.vishal.app has no certificates @ entry assets/jsondata.txt; ignoring! 08-18 22:50:52.284: e/semcsettingsparser(3711): key not found. key=[brand] 08-18 22:50:52.284: e/semcsettingsparser(3711): key not found. key=[group-visible]