Pick up any iPhone with a Home button, and you'll notice something peculiar when compared to your iPhone X, XS, XS Max, or XR; If you press the Sleep/Wake button on the Home button model, it sleeps immediately. Press the Side button on your Face ID-equipped iPhone, and it lags considerably. What's going on here, and can it be fixed? The short answer is yes, but not without a little sacrifice.
The iPhone X line of devices has its obvious differences from Apple's traditional catalog of Home button smartphones. The notch, Face ID, and an edge-to-edge display are the changes that first come to mind. However, there's another change that's important for understanding why your new iPhone takes an extra second to go to sleep — the Side button is not the same as the Sleep/Wake button.
The Side button on an iPhone X, XS, XS Max, and XR has additional responsibilities you wouldn't find in the Sleep/Wake button. Besides locking or waking the iPhone, you use it to activate Siri, disable Face ID quickly, and buy apps with Face ID, among many other tasks. But two uses, in particular, are what causes the delay in question — Accessibility Shortcuts and Apple Pay.
Apple Pay requires two Side button clicks to launch the Wallet with all cards and passes you've set up inside. Accessibility Shortcuts are activated by pressing the Side button three times, but only if you enabled them. For instance, if you turn on the Magnifer, it's automatically added as a triple-click shortcut; Other features you have to enable the shortcut for manually, such as Smart Invert. If you have more than one enabled, you will be presented with a list of your shortcuts to choose from.
If your iPhone went to sleep the second you press the Side button, as it would when pressing the Sleep/Wake button, activating Accessibility Shortcuts or Apple Pay would be near impossible. More often than not, trying to trigger Smart Invert or access Apple Pay from the lock screen would result in a sleeping iPhone.
To prevent this, your iPhone puts a delay on sleeping to make sure you don't press the Side button an extra time or two. After that timer is up, it goes to sleep, assuming you only wanted to lock the iPhone.
Strangely enough, if you have Emergency SOS to work after clicking the Side button five times in a row, this will not slow down the sleep speed like Accessibility Shortcuts and Apple Pay does, so you don't have to worry about this setting at all.
Unfortunately, the only way to see your iPhone match the lock speeds of your old Home button iPhone is to disable these two Side button shortcuts.
- Disable Side button shortcut for Accessibility Shortcuts: Head over to Settings –> General –> Accessibility –> Accessibility Shortcuts, and ensure none of the options are checked. If it's the Magnifier that's checked, you won't be able to adjust that from here; Instead, jump back to the main "Accessibility" menu, then tap "Magnifier" up top. and toggle it off.
- Disable Side button shortcut for Apple Pay: To take care of this, simply go to Settings –> Wallet & Apple Pay, then disable "Double Click Side Button."
Luckily, Apple Pay will activate automatically when your iPhone is placed near a POS terminal, so for most situations, disabling this shortcut shouldn't affect you — unless you use it for rewards or gift cards like AMC or Starbucks. Still, you can use Siri to open up your Wallet app, but you'll need to unlock your device to see it.
In addition, you can ask Siri to enable or disable any Accessibility Shortcut of your choosing. Just make sure you use the full name of the setting (e.g., "Enable Smart Invert Colors" rather than "Enable Smart Invert").
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