title: How do I view Android LogCat output from an exported APK running on a physical device?
body: <p>When I run my Android app using the Run -> Run menu option in Eclipse, the app launches on my phone and while it's running I'm able to view the log output in LogCat within Eclipse.</p>
  
  <p>When I export my app, copy the .APK onto the phone, install it from the APK, and run the installed app, I don't see any output in LogCat.</p>
  
  <p>Is there a way to view that log output?</p>
  
  <p>Context: </p>
  
  <p>I'm in the process of implementing in-app purchases. I think I have it working, and when I try using the in-app purchases from within the app if it's being launched on the phone via Eclipse's Run menu, it activates the Google Play store but I get an error that says "This version of the application is not configured for billing through Google Play".</p>
  
  <p>After some googling I found that this error gets thrown because the APK needs to have a signature that matches the APK I've uploaded to the developer console in order for the in-app billing to work, and running from Eclipse's Run menu doesn't provide that signature.</p>
  
  <p>So I've tried installing the signed APK that matches the one I've uploaded to the developer console and now when I try to use the in-app billing from within the app, <em>nothing happens at all</em>. It doesn't seem to even try to launch the Google Play store like it does when run through Eclipse's Run menu.</p>
  
  <p>So basically I need to see what kind of error messages it's outputting when I try to use the in-app billing specifically from the exported, signed APK.</p>