Is it possible to test iPhone 8 LCD prior to install?

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iPhone 8

2017年9月に発売されました。モデル番号はA1863、A1905。GSM もしくはCDMA/容量は64か256GB/ゴールド、シルバーとスペースグレイ

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Supleh2 @supleh2

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投稿日: 2018年7月23日

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Is it possible to test iPhone 8 LCD prior to install?

I'm in the process of replacing the LCD on an iPhone 8. In the past (on older models), I've always tested the LCD prior to transferring all of the LCD assembly components. However, when I connect the LCD ribbon cables and power up the phone it only displays the Apple logo. If I disconnect the battery and reattach the LCD cables of the OEM screen the phone boots up. What components of the old LCD assembly HAVE to be attached to the new one to test it prior to a full install? Could it be the home button assembly not being installed or something not being grounded or any essential screws?

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Thanks Ben. Got my triwing bits in and connecting the home button did the trick. Booted up like a charm.

Supleh2 さんによる2018年7月30日

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Ben @benjamen50

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投稿日: 2018年7月24日

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You are right, you need at least a home button plugged to LCD for phone to boot up normally.

If this is going to be your first screen replacement on a 8 phone, please be careful of the front camera assembly especially where the proximity sensor and ambient light sensor is.

Their next to each other and are held in snug with plastic gasket (one piece to hold both) and a bit of glue. I recommend heating them up well (80°C for like 5-10 seconds) to weaken / loosen the glue and adhesive.

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Thanks. After posting this as I was performing additional research. I came across information indicating the screen issue could be the result of the iOS version as well, is that true? Thanks for the additional info regarding the front camera assembly/housing.

Supleh2 さんによる2018年7月24日

What do you mean by screen issue?

Are you referring it being stuck on apple logo or the ambient light sensor where auto brightness does not work after screen replacement or something else?

Ben さんによる2018年7月25日

Indeed without the home button, it may take a very long time to boot. I would normally remove the home button and front cam from the broken screen. Then attach the front cam directly to the mother board, and the home button to the new screen, power on, and test. If all ok, I would assembly properly.

Rany さんによる2018年7月25日

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Thanks Ben. Got my triwing bits in and connecting the home button did the trick. Booted up like a charm. — Supleh2
Thanks. After posting this as I was performing additional research. I came across information indicating the screen issue could be the result of the iOS version as well, is that true? Thanks for the additional info regarding the front camera assembly/housing. — Supleh2
What do you mean by screen issue?

Are you referring it being stuck on apple logo or the ambient light sensor where auto brightness does not work after screen replacement or something else? — Ben
Indeed without the home button, it may take a very long time to boot. I would normally remove the home button and front cam from the broken screen. Then attach the front cam directly to the mother board, and the home button to the new screen, power on, and test. If all ok, I would assembly properly. — Rany

iPhone 8

Is it possible to test iPhone 8 LCD prior to install?

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