samsung galaxy s21 ultra let's go for the tear down i heated the back of the device
at 80 degrees celsius for three minutes grab your suction cup and apply the pressure on the
back of the device until you see a gap between the frame and the back cover insert your guitar
pick and start cutting the glue around the frame of the device this is a standard it applies to 99
of all samsung smartphones you can use a heat pad like i did or use a heat gun for the repair
of this smartphone work your way around the back cover of the device if the back cover
has been heated to a good temperature it should be easy to remove the back cover of the phone
if it start to get harder with the guitar pick reheat the back of the device since samsung use a
plastic back cover i had to be careful not to melt down the plastic element on the back of the device
so the only challenging part in removing the back of the s21 ultra is not to damage the cameras
the easiest way is to remove all the glue around the bezel and finish where you have the cameras
give a little bit of heat on the area where you have the cameras and start removing the glue
beside the cameras to smooth the whole process hit that area like i did
make sure you do not insert the guitar pick far inside because the risk of damaging the cameras
are high insert only a small portion of the guitar pick and cut the glue near the cameras
if you have the back open like i did you can even monitor the length of the guitar peak inserted
after all that apply a little bit of force to remove the back cover from the frame of the device
just like that we have completed the first step in tearing down this s21 ultra
do you think samsung should have put all the cameras at the top horizontally
finally we can remove the sim card tray
this is the new position of the sim card tray next remove the other lateral sensor on the
left of the device we have two sensors on this device these are component of 5g
the final part is to remove the battery of this s21 ultra removing the battery on this
device can be difficult due to the amount of glue that samsung has put on the back of the
battery i found that the easiest way to remove the battery is to preheat the screen of the device
naturally the heat will go through and soften the glue on the back of the battery
i use a metal tool to apply some pressure upward so that the battery can lift up
this is the easiest way to remove a battery on a samsung smartphone
and yes we have removed the final component not too fast we need to remove the quad camera on the
motherboard we have to disconnect four flex cable to remove the quad camera from the motherboard
make sure you do not touch the length of these cameras you do not want any fingerprint or
any dust on the cameras if you like these repair videos subscribe to our channel and give us a like
removing all this component was fairly easy it is like a puzzle this is all the components that make
this samsung s21 ultra what it is we have a lot of modular component so if one
is bad you just need to replace it and you will recover the lost functionality
samsung did not lock the component to the motherboard which means that if you replace one
of this component your phone will work like it is supposed to be you will not have the apple issues
with hardware and software it is time to put back everything together and let me know in the comment
if you think the phone is going to work we need to connect the quad camera to the motherboard
it is fairly easy align everything and connect all the flex cables make sure you have connected
all the flex cable all the way in if a flex cable is not connected all the way in your camera will
not work it will say camera failed again make sure to not touch the lens on these cameras
you don't want any dust or any fingerprint on them re-inspect again all the flex cable to make sure
the charging module by inserting three screws all the screws on this device are fairly similar
except the four screws holding the 5g component next insert back the front speaker assembly
there is no particular sequence of connecting the flex cables
but you should always connect the battery cable at last
insert the charging module cover
and it's four screws
insert back the sim card tray
these are the only screws that are different from all the screws on this device inspect all the flex
cable and make sure that they are all pushed all the way in connect the battery flex cable at last
satisfied time to put back the wireless charging pad and flex cables
this is a test to make sure that nothing has been broken
let's make sure that all the cameras are working
what a massive camera system the zooming on this s21 ultra is really powerful
test the wide-angle camera to make sure that that one also is working and at last the
front-facing camera the good thing now with this new samsung smartphone is that when the camera has
a problem one of the camera is bad your camera app is not going to work insert back all the remaining
screws to their original position at the top we have nine screws on the motherboard and two other
screws on the 5g component at the bottom you need to insert back four screws check again everything
to make sure that you've inserted all the screws back in it's time to insert back the back cover
this is the correct way of inserting the back cover
but it was not done right the right way to seal a back cover is to always
remove the old glue and add a new glue i will have a video coming for the back cover replacement
of this samsung s21 ultra where i put the new glue and clean everything
does this device charge we've not tested that
it's working so the teardown was successful
we've removed all the component and reassemble everything back thank you guys for watching
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