Restart Concept

In Digital World, The reboot or restart concept is always dominating! That is it if you have the ability to

• Switch (device...) off and on 
• Plug (cable...) and unplug 
• Kill (app...) and restart it
• ...

would be the easiest and the fastest way to solve the problem. If you are afraid from losing data or interrupting service then troubleshooting is the way but some times even you will need to apply the reboot concept.

A case study:
If you are facing a problem in identifying your android device to the ADB tool:
adb devices
List of devices attached is empty

device then, apply the Reboot Concept: All steps are intuitive but for the app, issue the following CMDs:

adb kill-server
adb start-server

BTW, to move new installtions in Android to the SDCard to solve the Memory low problem:

adb shell pm set-install-location 2