Samsung Galaxy Watch's teardown and Battery Replacement

Samsung Galaxy Watch was initially named as Gear S4 and introduced on August 2018. It has different version in different countries. The global version's models are SM-R805F, SM-R805N, SM-R815F and SM-R815N，while in USA and Canada its models are SM-805U, SM-805W, SM-815U, SM-815W. China has a special model number SM-R8050.


In below we'll introduce how to change its internal battery in details:

Firstly remove four screws on the back of watch as below picture.


Use plastic pick to pry the watch's back cover.


Remove sensor cable



Remove back cover


Remove display cable


Take the core parts out


Remove sensor cable


Remove button cable


Remove screw


Pry the mainboard


Take the mainboard out


Remove the old battery


Replace new battery


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