Samsung Galaxy S7 - Flex inferior

Guide with all the necessary steps so that you can change the lower flex of the Samsung Galaxy S7 (SM-G930f) yourself.

Difficulty
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Tutorial: Step by step

Step 1 Samsung Galaxy S7

Dimensions : 69.6 x 142.4 x 7.9 mm
Weight - 152 g
SoC : Qualcomm Snapdragon 820 MSM8996
Processor : 2x 2.2 GHz Kryo, 2x 1.5 GHz Kryo,
Number of nuclei : 4
Graphic processor: Qualcomm Adreno 530, 624 MHz
RAM memory: 4 GB, 1866 MHz
Internal memory: 32 GB, 64 GB
Memory cards: microSD, microSDHC, microSDXC
Screen : 5.1 in, Super AMOLED, 1440 x 2160 pixels, 24 bit
Battery : 3000 mAh, Li-ion (lithium ion)
Operating system : Android 6.0.1 Marshmallow
Camera : 4032 x 3024 pixels, 3840 x 2160 pixels, 30 fps SIM card: Nano-SIM
Wi-Fi: a, b, g, n, n 5GHz, ac, Dual band, Wi-Fi Hotspot, Wi-Fi Direct USB: 2.0, Micro USB
Bluetooth : 4.2
Location / Navigation : GPS, A-GPS, GLONASS, BeiDou

Before starting, make sure that the mobile is turned off.

Step 2 SIM tray

Remove the SIM tray

Step 3 Back cover

To begin with we will have to remove the back cover. This is very glued so we will apply heat to soften the glue.

With the help of a tool with suction cups, we will pull it to facilitate the entry of the quill.

Step 4

Having entered the prong, we will carefully cover the contour to take off the lid.

Step 5 Superior antenna

Remove the 12 Phillips screws (Ph # 00) that secure the housing and speaker.

Remove the top with a spatula.

Step 6 NFC antenna

Remove the middle housing with the NFC antenna.

Step 7

Separate the bottom speaker.

Step 8 Motherboard connections

Disconnect the flex from the battery.

Unplug and remove the front camera.

Step 9

Disconnect the flex from the screen, power and volume pushbuttons, and the headset.

Step 10

Disconnect the flex from the home button on the bottom of the board.

Disconnect the ends of the coaxial cables.

Pulling the plate upwards will disconnect the lower flex.

Step 11

Separate the base plate with an opening tool.

Use antistatic protection to manipulate the base plate with your hands.

Step 12 Battery

The battery is attached to the chassis with double-sided tape strips.

Use a suitable plastic spatula to detach the battery.

Step 13

We will apply heat to the surface of the screen to soften the adhesive.
For this, we will use the Hot Glass. Simply insert it in the microwave (see instructions) and apply hot on the screen for a few minutes.

Step 14 screen

Hold the screen with a suction cup.

Insert a prong under the glass. In this case, being strongly attached, we use a metal to penetrate and thus can enter the plastic.

The metal prick can scratch the housing and the screen.

Step 15

Scroll the contour with the prong to release the adhesive.

Help yourself with a plastic spatula since, in this screen, unlike others, we also have adhesive behind the LCD, in addition to the contour.

In the lower part, on both sides of the home button, there are two flexes of the front buttons. Be careful when passing the prong so as not to damage them.

Step 16 Audio connector

Remove the PH # 00 Phillips screw that holds the audio connector.

Unplug the flex and separate the audio connector.

Step 17

Disconnect the coaxial cables from the bottom plate.

Step 18 Flex inferior

Remove the two Phillips screws that hold the charging connector.

Peel off the flexes of front buttons, on both sides.

Step 19

Pass through the slot, towards the other side, the ends of the flex, in charge of the front buttons.

Step 20

Finally, take off the flex with the charging and microphone connector.

Video Tutorial summary

In this video you can watch a quick summary of the tutorial, but we recommend to follow the complete tutorial, with its explanations and detailed images.
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