Anatomy of The iPhone 12 Motherboard (2024)

According to Apple, there are many improvements and innovations in the iPhone 11 Pro, iPhone 12 and iPhone 12 Pro. Then, next, phonefix will give you a detailed analysis of the characteristics of the iPhone 12 motherboard from the aspects of Face ID, card slot, and cable.

Anatomy of The iPhone 12 Motherboard (2)

The motherboard of the iPhone 12 and iPhone 12 Pro is almost identical in appearance with the double-stacked soldering. The sole difference is that the connecting part of the LiDAR Scanner on the iPhone 12 motherboard has no stuff.

Beyond that, we can see two empty parts on the upper layer after separation. The two parts are additionally reserved for the Camera PMU2 and LiDAR PMU on the iPhone 12 Pro motherboard.

Anatomy of The iPhone 12 Motherboard (3)
  1. About Face ID

In appearance, taking the Face ID parts of the iPhone 12 and iPhone 11 Pro to compare, the iPhone 12 Face ID front camera module looks much the same as the previous iPhone 11. By the way, we can repair the iPhone 12 face ID issue by using JC dot flex cable or I2C face ID repair cable.

Anatomy of The iPhone 12 Motherboard (4)

The layout of the infrared camera, front camera, and dot projector remains unchanged. But there are some changes in the metal frame and flex cable.

It can be seen from the microscope and camera lens that the flood illuminator module at the ear speaker flex cable is different. The lighting area of the iPhone 12 flood illuminator is larger.

2. About Lightning Connector Flex Cable

The lightning connector flex cable of the iPhone 11 Pro integrates Bot Speaker IC, ARC Vibrator IC, Charging IC, and Wireless Charging IC, which increases the possibility of functional failure in the case of water damage or heavy fall.

But these ICs are back on the iPhone 12 motherboard, which not only reduces the possibility of lightning connector functional failure but also makes it easier to repair in the case of water damage or heavy fall.

3. About Card Slot

Adopted a stand-alone design, the iPhone 12 SIM card slot is connected via flex cable. In case of any fault related to the card slot during repair, you only need to replace the stand-alone card slot.

Anatomy of The iPhone 12 Motherboard (5)

For comparison, the iPhone 11 card slot is also connected to the motherboard via flex cable, but it is embedded on the motherboard for iPhone 11 Pro series.

4. About Antenna

U.S. Version iPhone

The U.S. version iPhone will feature an extra mmWave antenna while the motherboard will have an additional mmWave antenna connector seat. In addition to differences in the outer look, the layout of the three motherboards is also different.

Anatomy of The iPhone 12 Motherboard (6)

The motherboard of the iPhone 12 is placed on the left while the motherboard of the iPhone 11 and iPhone 11 Pro is placed on the right.

Other Versions

The iPhone 12 in our hand is not a U.S. version. As its 5G network frequency band adopts the Sub-6G, there are primarily three antenna connection seats (upper antenna, NFC antenna, and lower antenna).

As the new iPhone 12 lineup requires the baseband and chip of 5G to be added to the motherboard. Apple may need to redesign the motherboard and its layout.

5. About the Upper layer and Lower layer

As we mentioned in our previous video, the motherboard of the iPhone 12 and iPhone 12 Pro is almost identical in appearance with the double-stacked soldering. The sole difference is that the connecting part of the LiDAR Scanner on the iPhone 12 motherboard has no stuff.

Anatomy of The iPhone 12 Motherboard (7)

Beyond that, we can see two empty parts on the upper layer after separating by using the XINZHIZAO heating platform. The two parts are additionally reserved for the Camera PMU2 and LiDAR PMU on the iPhone 12 Pro motherboard.

6. About A14 Chip With A14 Bionic, the CPU, GPU, and machine learning abilities of the iPhone 12 lineup have been improved substantially.

Developed from the A13 chip, the A14 chip nanometer process goes from 7nm to 5nm. As the first 5-nanometer chip in the industry, A14 Bionic is faster than every other smartphone chip.

7. About Power Management Chip

Power management is more important in the iPhone 12 than for its predecessors given additional camera features and 5G capabilities, increasing Apple’s need for these parts. Apple is said to face shortages in power chips for iPhone 12.

Anatomy of The iPhone 12 Motherboard (8)

In summery, compared with the iPhone 11 series, the motherboard separation of the iPhone 12 has become more difficult with different components structure.

I hope the above sharing can help you. If you want to know more about phonefix , please leave a message in the comment area below.

Anatomy of The iPhone 12 Motherboard (2024)

FAQs

What is inside the iPhone motherboard? ›

The iPhone's motherboard, or logic board, is the device's most important part. It includes the processor, memory, and other critical components that allow the iPhone to function. Moreover, if there are some issues, it can lead to your iPhone crashing, freezing, or not turning on.

How to know if an iPhone motherboard is damaged? ›

The following are signs that your phone's motherboard is malfunctioning:
  • Your phone won't switch on even when properly charged.
  • The device vibrates and turns on, but the screen remains blank or malfunctions.
  • Your device keeps turning on and off on its own.

What is inside the box of iPhone 12? ›

In the Box

As part of our efforts to reach our environmental goals, iPhone 12 does not include a power adapter or EarPods. Included in the box is a USB‑C to Lightning cable that supports fast charging and is compatible with USB‑C power adapters and computer ports.

How does the iPhone 12 come apart? ›

Apply a heated iOpener all around the edge of the screen to loosen the adhesive under the display. Lift the display with a suction cup and insert a thin object to separate the screen from the frame. Slide the fine object along the entire edge to cut the adhesive. Raise the display.

Can an iPhone 12 motherboard be repaired? ›

Yes, the motherboard of an iPhone can be fixed. Motherboard repairs are very complex and hence usually require our trained professionals 3-5 days to complete.

What happens if you replace an iPhone motherboard? ›

if you replace the logic board, the storage gets replaced at the same time. Anything stored on the device is gone the moment the logic board is removed. You can't transplant the storage from one logic board to another.

What is the black thing on iPhone 12? ›

Do you have a new iPhone 12 Pro- and wonder what the black oval on the right hand side is? Looked it up and turns out there is a “window” for a mmWave 5G antenna!

What is in the notch of iPhone 12? ›

In that notch you'll find the speaker, front-facing camera, sensors, and Face ID tech like the dot projector. So ultimately, the notch is there because it has to be. No other reason than that.

What is the little slot on the side of my iPhone 12? ›

It's both exciting and not: the panel is a 5G antenna. Specifically, it's for the ultra-fast, short-range kind of 5G known as mmWave (millimeter wave). This kind of 5G is notoriously weak over long distances, so any little help it can snag to get the signal in and out of the iPhone is going to be gratefully received.

What is the back of iPhone 12 made of? ›

The looks and feels

As it did last year, Apple differentiates between the pro and non-pro iPhone models by offering different variations on material, finish, and color. The iPhone 12 is ringed in anodized aluminum with a glossy glass back and matte camera bump, and comes in black, white, blue, green, and red.

Is it worth to repair an iPhone motherboard? ›

Conclusion. Repairing an iPhone motherboards is indeed possible, whether through DIY methods or professional services. However, it's crucial to consider factors such as cost, warranty, and the extent of damage before making a decision.

What are inside the motherboard? ›

What are the different parts of a motherboard? A motherboard generally consists of four main sections: the processor slot, RAM slots, PCIe or PCI Express slots, and peripheral connectors.

What does a phone motherboard consist of? ›

It contains most important chips like Process Chip, Memory chips, Input/Output (I/O) chips and expansion slots used to connect peripherals, of which some are permanently soldered onto Motherboard while others are removable for upgrade.

What is inside the iPhone box? ›

Once you remove the seal and open the box, you're greeted by the iPhone 14 lying face down. Lifting up the phone reveals the inside contents, which are not much. There's a USB-C to Lightning cable, documentation, a SIM ejector (if you have a non-US model), and an Apple sticker.

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