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소개

If you need to replace the motherboard of your Xiaomi Mi 4, follow this guide. To gain access to the motherboard, both the back of the device and the battery have to be removed. One should also maintain a hygienic environment and remain statically grounded for the duration of this fix.

  1. Xiaomi Mi 4 Motherboard Replacement, Rear Case/Midframe: 1 단계, 이미지 1/3 Xiaomi Mi 4 Motherboard Replacement, Rear Case/Midframe: 1 단계, 이미지 2/3 Xiaomi Mi 4 Motherboard Replacement, Rear Case/Midframe: 1 단계, 이미지 3/3
    • Check to make sure that the device is powered off.

    • Use a pin or paper clip to insert in the hole on the side of the phone next to the micro SIM cardholder to remove the tray.

    • Remove the SIM card tray from the Xiaomi Mi 4 and store it somewhere safe.

    • Using the flat metal spudger and curved metal spudger, make a wedge between the plastic back cover and the inner frame

    • Using the second spudger, slowly work your way around the perimeter of the device

    • Listen for clicking sounds as you are prying the back cover away from the frame

    • As the back cover is almost completely removed, use the suction-cup tool to remove the plastic cover without damaging the back

  2. Xiaomi Mi 4 Motherboard Replacement: 3 단계, 이미지 1/3 Xiaomi Mi 4 Motherboard Replacement: 3 단계, 이미지 2/3 Xiaomi Mi 4 Motherboard Replacement: 3 단계, 이미지 3/3
    • Use a 000 phillips head screwdriver to remove the 10 1.2mm phillips head screws in the plastic frame that hold the motherboard and battery.

    • Use a 000 phillips head screwdriver to remove the 3 0.5mm phillips head screws in the plastic frame that hold the motherboard and battery.

    • Use the small plastic opening tool and place it in the slot on the bottom right corner of the inner frame and carefully pry it off.

    I don't think it is necessary to remove the three 0.5mm screws. Note: the right-most orange circle should be placed instead of the red circle above the two larger orange circles - those are the 0.5mm screws which secures a small plate under the plastic cover which is in NOT physically (but electrically via two metal contacts) to the mainboard.

    Douglas Ling - 답글

    yes, I expirienced the same thing. the three stated screws fixing a module (the flashlight LED-plate) on the frame..

    mobbom - 답글

  3. Xiaomi Mi 4 Motherboard Replacement, Battery: 4 단계, 이미지 1/3 Xiaomi Mi 4 Motherboard Replacement, Battery: 4 단계, 이미지 2/3 Xiaomi Mi 4 Motherboard Replacement, Battery: 4 단계, 이미지 3/3
    • Use tweezers to gently disconnect the connections that run across the battery and are connected to the motherboard.

    • Proceed to gently remove the tape like connector from the battery until it is completely off.

    • Use tweezer to disconnect battery’s wire from the motherboard.

    my mi4 had an accu Model “BM32” .. I ordered BM33 first. but the dimensions of the accu are different, so one can install only the right one.

    mobbom - 답글

  4. Xiaomi Mi 4 Motherboard Replacement: 5 단계, 이미지 1/2 Xiaomi Mi 4 Motherboard Replacement: 5 단계, 이미지 2/2
    • Use the plastic opening tool to gently pry the battery out of its casing for removal.

    Using a Pry tool damaged a bit the casing of the battery. I ended up pulling the battery's plastic sticker to remove it (adhesive holding the battery in place)

    James Burton - 답글

    Is it safe, can we fix the back cover perfectly?

    Hemen Bhatt - 답글

  5. Xiaomi Mi 4 Motherboard Replacement, Motherboard: 6 단계, 이미지 1/1
    • With the battery removed locate the left-hand cable connected to the motherboard. With the tweezers, firmly grasp the wires of the connector and gently disconnect the cable from the motherboard.

    • Find the other cable connecting the motherboard to the device at the top right-hand side of the phone, and carefully use the tweezers to remove that as well.

    Where can i get the motherboard?

    Mohan Reddy - 답글

  6. Xiaomi Mi 4 Motherboard Replacement: 7 단계, 이미지 1/2 Xiaomi Mi 4 Motherboard Replacement: 7 단계, 이미지 2/2
    • Wedge the plastic opening tool, between the motherboard and the inner region of the phone in the slot atop the motherboard.

    Do not just try to pry open!

    Here you have to be careful, there are two plastic parts restraining the motherboard.

    - If we use the above picture as reference, there is the first plastic piece in the top right corner: push it out of the way.

    - Second piece of plastic: imagine the motherboard as a rectangle; the plastic piece is in the middle of the bottom segment.

    - Push it out, pry out.

    James Burton - 답글

    Also, in my phone, the mother board had a thin black cable connected to the down speaker.

    EDIT: You can disconnect the cable by using a prying tool to gently "unclip" the connector.

    James Burton - 답글

결론

To reassemble your device, follow these instructions in reverse order.

다른 26명이 해당 안내서를 완성하였습니다.

William Pendeergraft

회원 가입일: 2015년 09월 08일

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9 Comments

Ruined my motherboard to Xiaomi mi4c, do you know where can I buy?

Milos Milos - 답글

I have broken one of the cable connections on the motherboard ( top one in Step 6). Do you know where I can buy a new motherboard?

Ben Dungey - 답글

you can buy the motherboard on taobao.com

Dong Zhengyue -

sim card reader is damaged. Do I need to have whole motherboard replaced

Shravan - 답글

sir i need MI4I motherboard unable to find elsewhere

Mobile # 09060907775

Thalanki Balaji - 답글

Sir sent me a link of buy mi4i motherboard plz

Vasu Chaudhary - 답글

My mi 4i not turn on when its charging port get shorted accidentally

gibin alias - 답글

I accidentally broke the pins on the motherboard (the one that connects to the screen. Help?

Jefferson Tan - 답글

I need to buy motherboard of Red Mi 4A.

HIMS SNAPS - 답글

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