title: android studio logcat does not show the reason of crashes when i run my app on a real phone
body: <p>I have a strange problem. when I run my app on Genymotion with android 4.1, everything is good and Logcat works fine and shows everything. but when I run the same app on a real phone(Huawei honour 7 with Android 6), and my app gets crash, logCat does not show the reason for that crash. in the other word, log cat does not show Exceptions. can anyonehelp me?thanks</p>
  
  <p>maybe be useful:</p>
  
  <p>logCat After a crash:
  <a href="https://i.stack.imgur.com/0TpKa.png" rel="noreferrer"><img src="https://i.stack.imgur.com/0TpKa.png" alt="Photo"></a></p>
  
  <p><strong>build.gradle(module app)</strong></p>
  
  <pre><code>apply plugin: 'com.android.application'
  
  android {
      compileSdkVersion 26
      defaultConfig {
          applicationId "my.application.id"
          minSdkVersion 15
          targetSdkVersion 26
          versionCode 1
          versionName "1.0"
          testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
      }
      buildTypes {
          release {
              minifyEnabled false
              proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
          }
      }
  }
  
  dependencies {
      ....
  }
  </code></pre>