Introduction

I am Arijit Guha, a computer science engineer by profession and I have taken apart every gadget I have ever come across in my life. I own this device and this one is no exception.

This teardown is not a repair guide. To repair your Asus Zenfone 2, use our service manual.

  1. Unscrew all the 14 screws. There are two strips of adhesive running top to bottom beside the sim card slots so be patient and slowly remove the rear cover.
    • Unscrew all the 14 screws. There are two strips of adhesive running top to bottom beside the sim card slots so be patient and slowly remove the rear cover.

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  2. The battery connector is the connector at the right of the motherboard. Above the battery, there is a bridge connector which connects the mainboard with the sub board at the bottom. So remove both the cables. There is a slight adhesive below the battery. Cut through it with a plastic spudger and it will come out.
    • The battery connector is the connector at the right of the motherboard. Above the battery, there is a bridge connector which connects the mainboard with the sub board at the bottom. So remove both the cables. There is a slight adhesive below the battery. Cut through it with a plastic spudger and it will come out.

    • The sub board has the antenna terminals also and prior to removing the battery, the antenna cable needs to be removed as well. Gently disconnect the coaxial cable from both the motherboard and the sub board.

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    • Remove the copper tape adhered to the mid-frame. The motherboard is held to the mid-frame using 4 plastic clips. I found that starting to pry up the motherboard from the right is easier than from the left. Just apply mechanical sense and you will get the motherboard out in no time.

    • Make sure not to bend the motherboard from too much pressure.

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    • The battery is rated at 3.85V, 11.5 Wh. The capacity is 2900 mAh minimum and 3000 mAh typical.

    I want to know the dimensions of battery, and if a bigger capacity battery will fit in.

    Stamate mircea - Reply

    I will have to measure the dimensions. However, I am sure that a bigger sized battery will not fit. If battery of same size but of higher capacity can be arranged, I am not sure if it would work at its full potential as the software is programmed to stop charging once the charge capacity reaches 3000 mAh (for this phone).

    Arijit Guha -

    I want to know where the battery sensor is so i can turn it off. My zenfone 2 got a bug that the sensor "thinks" the battery is in a very hot temperature, and i was told that turning it off would solve the bug.

    Rogério Martins - Reply

    It should be on the battery itself (one of the middle two pins). The battery has a controller board. I would be against removing the sensor due to safety. Replace the battery if necessary.

    Arijit Guha -

    • Removing the shields from the motherboard will expose the components.

    • Bottom side components:

    • SK Hynix H26M52103FMR 16 GB eMMC 5.0 flash memory

    • Intel 8818 XGold 223

    • Intel PMB 5747 RF Controller

    • SkyWorks 77627-11 Network Power Amplifer Module

    • Murata 6PH47

    • Qualcomm SMB 1357 Quick Charge 2.0 IC

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    • Intel PMB 6830 - Power Management IC

    • Winbond W978H6KBVX2E - 256Mb Low Power DDR2 SDRAM used for aiding the baseband processor.

    • Intel PMB 9933 Baseband processor

    • SK Hynix H9CKNNNCPTMR - 4 GB LPDDR3 RAM with the Intel Atom Z3560 processor layered underneath as PoP.

    • Realtek ALC 5647 audio chip.

    • Broadcom BCM4339XKUBG - Dual band WiFi controller.

    • The proximity sensor, notification LEDs and the 3.5 mm audio jack are all soldered to the motherboard.

    • The front and rear cameras can be easily removed from the motherboard

    Does not work fast charging, which is 9 volts, the usual 5 volts works, can it be from the power controller pmb6830. Email. Lukyanov_aleks@inbox.ru

    Алексей Лукьянов - Reply

    Check the daughter board containing the micro USB port. Also check the IO bridge cable connecting the motherboard to the daughterboard.

    Arijit Guha -

    Hi,

    my asus zenfone 2 551ml have this problem : don't see a sd card I try with other sd card ,problem remain.

    Can you tell me a possible solution

    Best regards

    Salvatore - Reply

    Replace the bridge cable connecting the motherboard to the daughter board.

    Arijit Guha -

    Hello my name is ED and my Asus Zenfone2 stop working all of a sudden. I turned it off to save the battery and when I went to power it back on it just stayed dark. When i go to plug it in all i get now is a Vibration every 3 to 5 mins. No Led light or anything. I took it to a repair place and they didnt know what to do with it. I had one guy tell me that i might need to pull the board. If that happens does that mean im going to lose everything that is not on my SD card? Thank you very much ED

    You can email me back at Mookyman03@gmail.com

    Edmond D Townes - Reply

    You need to restore the bootloader. There’s a tutorial on XDA on how to unbrick. xFSTK.

    Arijit Guha -

Arijit Guha

Member since: 10/22/2016

291 Reputation

1 Guide authored

2 Comments

Quick charging not work..already change daughterboard and bridge still same problem.can u help me sir?

miro alone - Reply

Quick charging needs working data pins on both the micro USB port and the cable plug. Check your cable, and it should work!

This phone is compatible with Qualcomm Quick Charge 1, 2 and 3

François Lefèvre -

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