대망의 iPad 3G를 마침내 iFixit의 손에 넣었습니다!

Wi-Fi + 3G 아이패드. 우리는 한 달 전에 FCC의 데이터베이스를 통해 이 태블릿의 내부를 살짝 엿보았습니다.

3G iPad는 검은색 플라스틱 RF 창으로 인해 Wi-Fi 전용 제품과 시각적으로 구별이 됩습니다.

3G iPad는 850, 1900 및 2100MHz에서 UMTS/HSDPA를 850, 900, 1800 및 1900MHz에서 GSM/EDGE를 지원합니다.

Apple의 획기적인 변화로, iPad는 잠금 해제되어 특정 통신사에 종속되지 않습니다.

하지만 아쉽게도 미국에서는 AT&T가 iPad가 지원하는 주파수에서 3G를 운영하는 유일한 이동 통신사입니다. T모바일도 이용할 수 있지만 속도가 느린 EDGE 네트워크에서만 작동합니다.

iPad의 모델 번호는 이전에 FCC에 등록된 대로 A1337입니다. 네, 저희는 l33t라고 생각합니다.

더 이상 시간을 낭비할 필요가 없으니 이 기기가 왜 으르렁거리는지 살펴봅시다.

이 제품의 내부를 한 달 전에 독점적으로 공개한 사전 제작 FCC 사진과 비교하겠습니다.

After some careful prying around with a metal spudger, the display assembly can be removed from the rear case.

The innards of the iPad 3G (left) and the iPad Wi-Fi (right).

Some major differences include the 3G chip, SIM card board, and the plastic antenna cover at the top of the case.

The 3G iPad is not nearly as barren as the Wi-Fi-only iPad, but it's still not jam-packed.

Pry up the antenna on the communications board with a plastic opening tool. This is one of two antennas on the communications board.

The communications board is secured by T4 Torx screws.

Upon removing the screws, the communications board slides out of its socket on the logic board. The connection socket style is similar to a Mini PCI Express card.

Removing the micro-SIM card. That's a really small SIM card!

The iPad's SIM card measures 12mm x 15mm. That's just under half the size of the standard size SIM card from an iPhone 3GS.

You could cut up a full-size SIM card and turn it into a Micro-SIM. The contacts are fully compatible.

New to the 3G iPad, there's an antenna attached to the backside of the display assembly. The copper foil piece seen in the picture connects to the silver metal LCD frame. Apple has cleverly used this same piece of metal for both structural and electrical purposes.

Use the flat end of a spudger to pry the SIM card slot off the rear case.

It sure doesn't look like Apple was tight on space. As far as we know, the only purpose of this board is to connect the SIM card to the logic board.

Comparison between the iPad 3G's (left) and the iPad Wi-Fi's (right) logic board.

When comparing the two models, the top half of the Wi-Fi's rear case has copious amounts of open space.

Use the tip of a spudger to disconnect the GPS antenna ZIF cable connector.

The GPS antenna assembly can be pried off the plastic antenna cover with the flat end of a spudger.

The front and back of the GPS antenna assembly.

Lift the cellular antenna from its housing.

The cellular antenna remains.

From left to right: the Wi-Fi/Bluetooth, GPS, and 3G antennas, respectively.

The 3G board with A4 processor.

The second shot is the main board from the Wi-Fi iPad.

Key differences?

The most obvious change is the addition of the connector on the right side of the board for the communications board.

More subtle is an additional small IC above the A4 chip next to the connector for the GPS antenna. This may be a signal processor, but we can't firmly identify it: T3J 927 632567.

Bottom of the main board.

Nothing much to see here, it's exactly the same as the Wi-Fi board.

Apple soldered the EMI shield onto the communications board, making it challenging for us to show you the chips. Despite this adversity, we pressed forward undaunted, fearlessly unsoldering the board to reveal to you:

Infineon 337S3754 PMB 8878 X-Gold baseband IC 5Y06115. This part had the Infineon logo in the pre-production unit, but Apple has white-labeled it to obscure the manufacturer. This is the exact same baseband processor as the iPhone 3GS.

Skyworks SKY77340 Power Amplifier Module

Three Triquint power amplifier / filters.

Infineon U6952

Numonyx 36MY1EE

Along the right are three TriQuint power amplifiers: TQM616035A, TQM666032B, and TQM676031A. These are the same three chips that Apple used in the iPhone 3G nearly 2 years ago.

Broadcom A-GPS BCM47501UBG F01003 P11 949871 SN

Bottom of communications board.

The second photo is from the pre-release FCC unit. The bottom of our board has additional part number markings, but is otherwise identical to the pre-production unit.

It's important to note that the Broadcom A-GPS package is on the communications board, explaining why the Wi-Fi-only iPad does not have GPS.

That wraps up this teardown of the iPad 3G.

Don't forget to take a peek at its cousin, the iPad Wi-Fi Teardown for more iPad related mayhem.