Repair iPhone 6S Plus fingerprint unlock
Fingerprint recognition, a trend intelligence applications, since the iPhone, fingerprint identification has been known to everyone step by step,After all, it's easy to use fingerprint unlocking, Compared to other ways, fingerprint to unlock speed faster, and more convenient. But recently many people have found that iPhone6SP fingerprinting has become a bit ineffective and very insensitive. What is going on? How to solve it? In this article I will share how to solve the problem of fingerprint unlock failure.
First, let's connect the ZXW Dongle to the computer to see the schematic of the fingerprint flex cable interface. As shown in Figure
Look at the iPhone 6S plus's flexible cable interface, we can find that it is a little different from the iPhone6 plus. The left side is the control signal of the fingerprint part. The right side of the MAMBA is the function of the new Force Touch, it's called the piezoelectric Touch, for example, gently to desktop clock icon and press the icon, forced response is different, as shown in figure
If the fingerprint add failure, use Fluke 15 b + digital multimeter in figure measuring voltage of 1.8 V and 3.0 V.If there is no resistance to measure the two circuits, check whether there is circuit breaker or short circuit.check the connected inductance or the bypass capacitor, the inductance can be short connected by jumper wire, the bypass capacitor can be removed by QUICK 861DW hot air gun. You can also try to reassemble or replace the power IC-U2000 if the inductor and capacitor faults are excluded.
If power is normal, measure resistance of each pin in turn. If the circuit is damaged or short-circuited, you need to check the inductance or bypass capacitance. The Inductance can be short connected and the bypass capacitors can be removed.
If the increase of fingerprint will not indicate "failure", but there is no response when touching the home button.Maybe there is no 16.5V voltage, you can replace iPhone 6sp fingerprint power supply U4040to solve the problem.
Your Home button should be squeaky clean but that doesn't mean your fingers are. The moisture, lotions, sweat, oils, cuts or dry skin can affect fingerprint recognition. Keep your fingers clean when using fingerprints.
If you have any other problem about repair mobile phone ,please research on www.vipfixphone.com.
First, let's connect the ZXW Dongle to the computer to see the schematic of the fingerprint flex cable interface. As shown in Figure
Look at the iPhone 6S plus's flexible cable interface, we can find that it is a little different from the iPhone6 plus. The left side is the control signal of the fingerprint part. The right side of the MAMBA is the function of the new Force Touch, it's called the piezoelectric Touch, for example, gently to desktop clock icon and press the icon, forced response is different, as shown in figure
If the fingerprint add failure, use Fluke 15 b + digital multimeter in figure measuring voltage of 1.8 V and 3.0 V.If there is no resistance to measure the two circuits, check whether there is circuit breaker or short circuit.check the connected inductance or the bypass capacitor, the inductance can be short connected by jumper wire, the bypass capacitor can be removed by QUICK 861DW hot air gun. You can also try to reassemble or replace the power IC-U2000 if the inductor and capacitor faults are excluded.
If power is normal, measure resistance of each pin in turn. If the circuit is damaged or short-circuited, you need to check the inductance or bypass capacitance. The Inductance can be short connected and the bypass capacitors can be removed.
If the increase of fingerprint will not indicate "failure", but there is no response when touching the home button.Maybe there is no 16.5V voltage, you can replace iPhone 6sp fingerprint power supply U4040to solve the problem.
Your Home button should be squeaky clean but that doesn't mean your fingers are. The moisture, lotions, sweat, oils, cuts or dry skin can affect fingerprint recognition. Keep your fingers clean when using fingerprints.
If you have any other problem about repair mobile phone ,please research on www.vipfixphone.com.
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