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iPhone Duo Doesn't Have an Action Button
The iPhone Duo does not include an Action Button, according to the device's technical specifications page. The page's diagram., highlights volume up/down buttons at the top, Camera Control and side buttons on the right side, a USB-C port at the bottom, and microphones and speakers at the top and bottom. On the iPhone 18 Pro models and earlier, the Action Button is located on the left side of the iPhone right above the volume up/down buttons.
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