Apple S3
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Apple S3
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| Designer | Apple |
|---|---|
| Introduced | September 2017 (Apple Watch Series 3) |
| Type | System in Package (SiP) |
| CPU | Dual-core (~70% faster than S2) |
| Wireless | W2 wireless chip · LTE cellular (optional) |
| Devices | Apple Watch Series 3 |
| Predecessor | Apple S2 |
| Successor | Apple S4 |
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The Apple S3 untethered the Watch: its optional LTE modem made September 2017's Apple Watch Series 3 the first that could call, text, and stream with the iPhone left at home. A seventy-percent faster dual-core let Siri finally speak from the wrist, the integrated W2 chip sped up Wi-Fi and Bluetooth, and a barometric altimeter counted flights climbed.
1 Legacy✎
The Series 3 became the Watch's iPhone 3GS moment — the affordable workhorse Apple kept selling until 2022, five years on. That longevity cut both ways: the S3's 8 GB and aging cores strained under late watchOS releases, and its watchOS 8 endpoint became the argument for the S series' later performance headroom.