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Go to Settings>Sounds&Haptics. All going well.
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With the screen on, place a call to the phone using a known-good phone. The decline and answer buttons appear on the screen.
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Turn the screen off. Place a call to the phone using a known-good phone. The phone is not responding at all. Press the power button to turn the screen on. We can see the decline and answer buttons on the screen.
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Judging by this, relevant circuits of the baseband wake signal might have malfunctioned. Take apart the phone and disconnect the battery. Remove the display assembly and take out the motherboard.
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Attach the motherboard to the PCB Holder. Heat with Hot Air Gun at 200℃, air flow 3. Tear off the heat dissipation sticker on the backside of the motherboard.
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Open the bitmap software. Locate BB_TO_PMU_PCIE_HOST_WAKE_L. Since relevant circuits of the wake signal might have malfunctioned, we can try to borrow the wake signal from WiFi relevant circuits.
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Locate WLAN_TO_PMU_HOST_WAKE. We can connect PP101_E-1 (the test point of the baseband wake signal) with PP7611_W-1 (the test point of the WiFi wake signal) by jumping a wire.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
