hello guys welcome to ERSBIT in this video we are replacing the battery
on the samsung s21 ultra this video applies to all samsung smartphones including the s21
and the s20 the first step that we need to address is removing the back cover of the device
check the link into the description if you want the full video for the back cover replacement
the only glass on the back of the s21 ultra and all other s20 line of phone is only the outer
lens of the cameras that means that you're not going to the repair shop as frequently
as if you had a samsung s20 or a samsung s20 plus so subscribe so that you do not miss my
camera lens replacement video on the s21 ultra removing the back cover of the s21 ultra itself
is not hard it is really easy so fast forward here i removed all the component on this device
if you need to replace the battery of your device you do not have to remove all the component there
is two way to remove the battery on the samsung device you can use heat like i did in this video
or you can use some kind of solvent to soften the glue on the back of the battery so that you
can remove it insert the tip of your metal tool on one side of the battery since it's hot you
need to have some gloves and apply a little bit of pressure upward and the battery is going to
start moving slowly you can use a hot plate like i did in this video or you can use a
heat gun or even you can use a hair dryer to remove the battery on your samsung smartphones
i set up the hot plate to be at 80 degrees that's enough heat to go through the screen
and start to soften the glue on the back of the battery you need to apply just a
little bit of pressure you don't have to apply a lot of force so one quick question tell me in
the comment box if samsung should continue to apply so much glue on the back of the battery
this method of removing the battery is recommended if you need to replace your screen because the
glue on the back of the battery is going to stay sticky and you're not going to use any new glue
when installing the battery on your new screen and if you do not feel the battery is moving
add some heat to the screen of your device if you decide to go with a solvent make sure that
you take out the battery really fast and clean the excess liquid if the solvent is really strong it
is going to attack the glue that attach the frame and the screen of the device the solvent might
not reach the screen itself but it is in direct contact with the digitizer and if your digitizer
is bad you're not going to feel any touch on the device and you're going to replace your screen
i prefer to use it because it is straightforward and the risk to damage other components is minimal
if you like this repair video subscribe to our channel so just like that we have removed the
battery on the samsung s21 ultra to install the battery it is really simple you just need to
install the battery like you removed it the space for the battery is really tight and
there is not a lot of room to mess it up in this video right now this is not the right way to
insert back or install a back cover on a samsung device because i have not cleaned the back cover
of the device nor added a new tape clean the edges of the phone prepare the back glass
and the frame of the device for the new glue you need to remove the old tape and add a new tape
to the back cover so that when you close the back of the device it is going to firmly stick and it
is not going to detach itself in a few weeks check the link into the description for the
replacement of the back cover of the samsung s21 ultra let me in the comment box what do you prefer
a back cover made out of plastic or a back cover made out of glass let me know in the comment box