Why Face ID Not Working After Repair
Duration: 45 minutes
Steps: 8 Steps
Face ID, the cool facial-recognition feature that made its debut on the iPhone X, has now made its way to the latest iPhones, including the XS, XS Max, and XR. With this nifty system, you can unlock your device just by scanning your face—hat, glasses, or even in low light, no problem! It's like having your own personal bouncer for your phone. So go ahead, let your face do the unlocking!
Step 1
Handle your phone with care while you're taking it apart or fixing it! Remember, any mishap could lead to a Face ID hiccup.
Heads up! There's a special slot on the display assembly. When you’re putting everything back together, make sure the fold of the speaker flex cable fits snugly in that slot. If it doesn’t, you might risk damaging the cable and, you guessed it, Face ID might throw a tantrum!
- Inside that sleek front of your phone, there are a total of 8 nifty components hanging out together. You've got the Infrared Camera, Flood Illuminator, Proximity Sensor, Ambient Light Sensor, Speaker, Microphone, Front Camera, and the Dot Projector—all in one place!
- Now, let's talk about some cool features! The infrared camera, dot projector, and front camera are chilling on the back glass assembly, ready to capture your best selfies and more.
- On the other hand, the flood illuminator, proximity sensor, ambient light sensor, speaker, and microphone are all part of the display assembly, ensuring you can chat, see, and be seen without a hitch!
Step 2
- Take a look at the flood illuminator – you'll notice it's packed with holes arranged in an 11×11 grid. Pretty cool, right?
- The chip stays connected to the circuit board thanks to tiny gold wires working their magic.
- But here's the thing – if water manages to sneak in, those holes might get blocked. And when that happens, say goodbye to Face ID functionality!
Step 3
These three chips each have their own special role, and they're all crucial for the job. They might be independent, but don't let that fool you – they're all needed to make things work smoothly.
- Chip 1 is a chip that keeps things simple by not using encryption. Chip 2 is our trusty flood illuminator, making sure everything shines bright. Meanwhile, Chips 3 and 4 are our dynamic duo of proximity sensors, with one receiving and the other transmitting signals like a well-coordinated dance.
Step 4
- The outer shell of the dot projector is snugly sealed with resin and reinforced by some solid metal welding. Pretty neat, right?
- Keep an eye on those welding points! They have a tendency to come loose if your phone takes a tumble, and once they're off, it's a one-way ticket—no going back!
- Once you carefully detach the dot projector, you'll be greeted by a crystal that sparkles like a diamond lens. Fancy, huh?
- This is where the magic happens! The infrared light makes its grand exit from here, bounces off the crystal, and its projection range is all thanks to the lens that follows. Let's keep that projection sharp!
Step 5
Heads up! The chip is out in the open, with no black adhesive seal to protect it. That makes it super vulnerable to drops and water—once it’s damaged, there’s no coming back. Handle with care!
- On the left, we've got the chip that stores all your data. The chip on the right? Think of it as a mini movie projector, full of thousands of tiny dots. Those dots are where the infrared magic happens.
- The right-side chip needs juice to do its thing, but if it gets wet, the circuits can get fried and cause Face ID to call it quits. Water damage here is seriously bad news!
Step 6
- On the crystal, we’ve got both a concave and a convex lens made of glass. If dropped, it can mess with your Face ID. So, be careful, because even small impacts can affect your phone's performance.
Step 7
- From what we saw while taking it apart, the main circuits for Face ID are hanging out in the open. If water sneaks in or the device gets too damp, it can cause electrical leaks or short circuits, which might make Face ID throw in the towel.
- Also, most Face ID components are glass—so if you drop it, there's a good chance Face ID will decide to take a break.
Step 8
- Alright, here's the deal: Face ID is super convenient, but it's also a bit sensitive. One wrong move, and it could be hard to fix. So, keep that phone safe—no drowning it in water or letting it take a nosedive onto hard surfaces. When it comes time to repair, especially if you're working on the logic board or replacing the display, make sure to handle things with extra care. Trust us, your phone will thank you. If you're not feeling confident, you can always schedule a repair and let the pros handle it.
