hey guys welcome to ERSBIT in this video we are replacing the back cover on the Samsung s21 ultra
you can use a heat gun to hit the back cover of your device or you can use a hot plate like i am
doing it in this video using a hot plate i set the temperature to 80 degrees that was enough
to soften the glue on the back of the back cover using a heat gun heat the device for three minutes
that should be enough for you to start removing the back cover insert your guitar pick and start
cutting the glue around the frame of the device you need to pay more attention to the camera bezel
while removing the back cover if you insert the guitar peak far inside there is a risk to damage
the cameras so you need to be more careful on that area even if you're not going to reuse the back
cover apart from the camera bump area it should be a smooth process to remove the back cover always
remember to use a little bit of extra heat if your guitar pick start to get harder to move since this
back cover is not made out of glass like on the samsung s20 there is less chance to cut yourself
working with this type of back cover made out of plastic make it straightforward and very easy to
work with try to preserve everything intact around the camera bezel because we are going to transfer
some of those components onto the new back cover the only problem i'm seeing with this new design
of back cover is the water resistance using a two-piece back cover design make it very beautiful
but i will prefer samsung to use the design they made for the a52 or the a72 on their new
lines of phone for the first method of back cover replacement we are going to use a b7000 that is a
glue the frame of this device is made out of sharp turns especially around the cameras which make it
very difficult to add a liquid glue and then add the back cover for it to seal completely so what
you can do is use b7000 with the tape that comes with your new back cover that combination is going
to work better than using only a b7000 there are some other device that can use b7000 only to seal
their back cover but on the s21 ultra and the s21 and s21 plus i do not recommend using b7000 to
seal the back cover once you have the back aligned with the frame of the device put some pressure
around the frame of the device so that the back cover will stick firmly to the frame of the device
after you completed that step use some clamps to put pressure around the frame of the device so
that the back cover will stick more to the frame the second method of changing the back cover on a
s21 ultra is to remove the component on the back of the camera bezel and transfer them onto your
new back cover after use a sharp metal tool to remove or loosen the camera bump on the back cover
proceed to remove the metal piece that attached the plastic and aluminium piece that made this
back cover proceed to remove the aluminum sheet of papers that are near the camera bump install all
those aluminum pieces on the new back cover this piece must be for a grounding reason
so you need to transfer these install back the piece of metal that links the plastic side
and the aluminum side of this back cover this is especially why i think this device is not good
to play in water the way they made this back cover make it prone to water insertion inside
the frame of the device hit the camera bump to remove the flashlight component and install it
onto your new back cover make sure you align it perfectly with the hole it has to sit in
these are some rubber pieces that you need to remove and install on your new back cover
this is not mandatory because you will not be able to remove all those piece of rubber
try your best to remove all those rubber and install them onto your new back cover
i was able to remove most of the rubber pieces except one you also need to transfer
this metal piece onto your new back cover carefully insert it under the metal piece
after you installed all those components we are ready to install the new back cover
make sure you put some pressure around the back cover so that the tape sticks firmly to the back
cover first and we are going to install the back cover on the device remove the outer protective
film so that you can align the back cover with the frame of the device since the frame of this device
is not flat and it has some sharp turns you need to be very careful while aligning the back cover
i had to try multiple times in order to have the perfect alignment then apply the back cover
onto the frame of the device please make sure you align the back cover especially the aluminum piece
because that's a weak point where water can enter your device the big piece of aluminum make it very
difficult to align the back cover you need to be extra careful while aligning the back cover
with the frame of the device when you successfully replace the back cover
it is time to inspect the back cover and the frame to make sure that we do not have any
misalignment thank you guys for watching subscribe like and share and i will see you next time