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发布于2018年10月26日。型号A1984,A2105,A2106,A2108。 提供GSM或CDMA / eSIM,nano-SIM或双SIM / 64,128或256 GB /黑色,白色,蓝色,黄色,珊瑚色或红色。 (发音为“iPhone 10 R”)

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Not getting a display on the iPhone xr

So this customer came in and said he damaged his screen and it wont turn on but you can still tell the phones on because it will vibrate and you can hear siri, so we did a screen replacement but still no display, so we used a cracked screen that we use for testing and removed the back covering on it to shine a flashlight under it to see if we get any display, (forgot to mention that the backlight was not coming on with any of the screens we tried thats why we did the flashlight method which we have done before to get data off an iphone 6) so the phone turned on but you dont see the apple logo, you only see lines from when it was damaged before but then the phone turns on (vibrates) but u still get no display, the only picture u get is lines (from the flashlight we were using to give the device light) I tried a few other spare xr screens and im getting the same issue. The customer is only trying to get data off the phone but our issue is we arent having any luck getting a display. (we also connected it to a computer just to make sure it was on and you can hear the phone vibrate indicating its asking you to give permission to the laptop to access your phone) can anyone help me out please?


This is a repost because I need help asap please

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If dan and mayer are out there Your help is greatly needed because i know i am able to count on you two

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This doesn’t look good Zach. The first thing you will need to do is check if 5V and 1V8 is getting to the connector, you will need the screen connected for this. Second you will need to diode the connector paying special attention to

·         90_MIPI_AP_TO_DISPLAY_DATA0_CONN_P

·         90_MIPI_AP_TO_DISPLAY_DATA0_CONN_N

·         90_MIPI_AP_TO_DISPLAY_DATA1_CONN_P

·         90_MIPI_AP_TO_DISPLAY_DATA1_CONN_N

You will need to compare these readings with a known good board. Without seeing how the phone is behaving it is difficult to diagnose over the internet. You could try clamping the CPU if you cannot find any irregularities with the connector circuits.

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@imicrosoldering

thank you so much, i just left work so ill check on it tomorrow, ill update you with my findings, thanks again so much.

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also for schematics, whats the best program to use? i know zxw microfish is one but is there any others or is that my best bet?

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@zmentz I use ZXW for boardveiw and PDF files for Schematics.

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so we are getting a parts iphone xr phone in to use its working board to test the readings, it should be in tomorrow so ill let you know on the update

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I know that this might cause other issues but first try to replace the logic board

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the only issue is the customer is trying to get the data off the phone first because he bought a new phone and wants to transfer the data and he never backed it up so thats why we are trying to get the screen on to do a backup

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