How to upgrade Mac Book Pro hard drive SSD. specific for A1398, A1502 Old Mac Book Pro

When Mac Book grow old, your data grow bigger, and it's  space become insufficient quickly. So you need to change your hard drive to a bigger one.  How to change SSD on Mac book pro , specific for A1398, A1502. But it should works same way on most Mac Book Pro

First you need to open the back cover, it use specific screw driver to open it. If you don't have one, you can get it one on ebay

After you open the back cover, you need to unplug the battery first before you change the SSD.  Gently lift each side of the battery connector to pry the connector out of its socket on the logic board.

The SSD is on the left side, it was fixed on logic board by a screw.  remove the screw first, then you can pull the SSD out. When you pull the SSD out it socket, do it straight, then you can take it out.

How to get a SSD for Mac Book pro?  I found one  on ebay about USD$50 with 3 year warranty. It come with screw driver, so you don't need buy screw driver separately.

Before you perform this upgrade, if at all possible, back up your existing SSD for precautions