Apple has always disliked the detailed hardware specifications of the products, so many times it can only rely on professional equipment disassembly and chip analysis to dig inside. ChipWorks has been researching Apple's Apple Watch since its inception, and found that it should support Wi-Fi, and now it is finally fully confirmed.
The wireless chip used by Apple Watch is indeed the conjectured Broadcom BCM4334, a single-chip dual-band solution that supports 802.11n Wi-Fi, Bluetooth 4.0+HS, and FM.
Is Wi-Fi useful? There may be a lot of undisclosed secrets. For example, according to Yahoo! Tech reporter David Pogue, Apple Watch is on a known Wi-Fi network, regardless of whether the paired iPhone is powered off, has no power, or is not around. Can do some limited but important network functions, such as sending inquiries to Siri, sending and receiving messages, sending and receiving graffiti and heartbeat messages to other Apple Watch users.
At the same time, it can be confirmed that NFC is supported, and the judgment method is very clever. Look at the chip packaging method and relative size!
This is the NFC controller NXP 65V10, 7 x 7 solder ball grid package used in the iPhone 6.
Front and back view of the AS3923 NFC power amplifier, 5 x 4 solder ball grid package.
Oh, there is also the Invensense MP67B motion sensor.
Combined with Apple's Apple Watch motherboard solder joint map, you can basically determine the existence and location of their three.
Optical Network Unit/Optical Network Terminal/ FTTH/FTTB/FTTR PON Gateway Routers.
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