1. Don't leave the  cable connected  to the phone  while  unattended.  Although the  cable should not  be recognized by  the phone for  charging  purposes, it is  supplying  operating power  to the phone via  its USB port  (which is not  normally the  case). If you  are using the  cable with no  battery in the  phone, and if  your host  computer lost  power or shut  down, your phone  would instantly  lose power just  like a battery  pull had  happened.

    　
  2. Connect the  Micro-B end to  the phone first,  and then connect  the USB A end to  the computer.  The Micro-B  connector is  very tiny and we  want to make  sure it is in  the phone  straight and  seated before  you apply power  to it by  connecting it to  the computer.  Connecting the  Micro-B end  first protects  your phone and  your computer.

    　
  3. When working on  the phone with  the cable  connected and no  battery inside,  best to go ahead  and put the back  cover back on so  you don't lay it  down on  something that  touches some  contacts in the  battery  compartment. If  you're working  on a proper  (uncluttered)  workbench and  you're the  careful type,  this may not be  necessary, but  better safe than  sorry.

    　
  4. Don't plug this  cable into any  device not  designed for it.  If plugged into  a device not  expecting this  map you could  destroy the  device, your  computer, or  both.