iPhone 6s
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Problem | Solution |
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Phone is boot looping | This behaviour can be caused by a bad battery or a bad PMIC - both which are common on this phone. In rare cases a messed up home button plug on the logic board can cause boot looping. |
Not Charging
But still turns on |
If it charges at 0.005A via USB but still doesn't charge, it is usually Tristar or Shorted WiFi
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No Image | If the phone boots up, but shows no image, do the following
Check for any shorts on the image lines, like
Most likely, you'll find a short on the above lines. If so, inject voltage (1V/1A should be enough) to find the heat source. Remove the cap that heats up & test again.
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No Backlight | If image shows up by shining a light diagonally across the screen but no backlight, check the backlight filters near the logic board connector, particularly FL4221, they can blow. Here's a full video tutorial: https://www.youtube.com/watch?v=kgKpzfgOzL0 |
FPC Connectors diode mode readings[edit | edit source]
Use these diode mode maps as a guide to troubleshoot a problem. You must use the RED PROBE on ground and the BLACK PROBE on the pin you are measuring.
For example: you are troubleshooting a no backlight situation, so you probe the pins on the display FPC that correspond to backlight. If a pin says you should read 0.65 and you are reading OL or a short to GND then that's where you need to go.
If instead of getting 0.65 you read 0.58, move on to the next one, remember every multimeter is different and even slight differences in temperature affect this readings. What you are looking for is extreme differences in values, if you are expecting some value and you get a short to ground that is where it is more likely to be your issue.
iPhone 6S[edit | edit source]
Display and Touch connector (J4200)[edit | edit source]
Charge port / dockflex Connector (J4600)[edit | edit source]
Battery connector (J2400)[edit | edit source]
Home button, TouchID Connector (J4100)[edit | edit source]
Rear camera Connector (J3200)[edit | edit source]
Front camera, proximity sensor, earspeaker, ambient light sensor connector (J3100)[edit | edit source]
Volume and Power buttons, flashlight, ringer switch (J4700)[edit | edit source]
No available data as of yet.
iPhone 6S Volume, power buttons, ringer switch and flaslight connector. Top left goes to top edge of the board, next to the mute/ringer switch.
iPhone 6S Plus[edit | edit source]
Display and Touch connector (J4200)[edit | edit source]
Charge port / dockflex Connector (J4600)[edit | edit source]
Battery connector (J2400)[edit | edit source]
No original data as of yet. Please refer to 6S instead.
iPhone 6S Plus battery connector. Bottom left goes to the edge of the board, next to the bottom of the battery.