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       Use Apple Pay in a store. Double‐click the Side button to use your default Apple Pay card. For more about Face ID and setting up Apple Pay, see Chapter 2.

       Confirm an app or in‐app purchase. Wait until you see the Double Click to Confirm prompt shown in Figure 1.3; then double‐click the Side button to authorize the purchase. 1.3 Double‐click the Side button to authorize an app or in‐app purchase.

       Put the phone in Silent Mode. Flick the Ring/Silent switch toward the back of the phone. You see an orange stripe on the switch, the iPhone vibrates briefly, and you see a brief notification telling you that Silent Mode is on.

       Return to Ring Mode. Flick the Ring/Silent switch toward the front of the phone. You no longer see the orange stripe on the switch, and the iPhone displays the current ringer volume setting.

       If you're on a call, the volume controls adjust your speaker volume.

       If you're using the Music app, the volume controls adjust the music volume.

       In all other situations, the volume controls adjust the output of sounds such as alerts and effects.

      1 Locate the SIM removal tool that came with your phone. Figure 1.4 points out this tool. If you can't find the SIM removal tool, you can use any object with a similarly narrow end, such as a small paperclip or a safety pin.1.4 Push a SIM removal tool or pin into the hole to eject the tray.

      2 Push the SIM removal tool into the hole that appears on the SIM card tray. This tray appears just below the Side button, as shown in Figure 1.4. Insert the tool until the tray ejects.

      3 Carefully lay the SIM card into the SIM card tray. To ensure you insert the card correctly, match the notch in one corner of the SIM card with the corresponding notch in the tray.

      4 Reinsert the SIM card tray until you feel a soft click as the tray slides into its correct position. Your SIM card is ready to use.

       Tap. This means you use your finger to quickly press and release the screen where desired. This gesture is what you use to initiate just about any action on the iPhone. This opens applications, activates options, enters text boxes, and much more.

       Press. This means you apply pressure to the screen to activate the 3D Touch feature available on some iPhones. A light press on a screen object (such as a Home screen icon) activates that object's Peek feature, which either gives you a sneak peek of the object or displays commands that you can run on the object. If you then release the screen, iOS takes you back to where you were. Otherwise, a slightly harder press on the screen object activates the object's Pop feature, which takes you into the object's app.Note3D Touch is available on iPhone models 6s, 6s Plus, 7, 7 Plus, 8, 8 Plus, X, XS, and XS Max. iPhone models XR, SE (2nd edition), 11, 11 Pro, 11 Pro Max, 12, 12 mini, 12 Pro, and 12 Pro Max all replace 3D Touch with Haptic Touch, which recognizes a long press (that is, a press that lasts a few seconds) instead of actual screen pressure.

       Double‐tap. This is what it sounds like: two quick taps with your finger. In applications such as Photos or Safari, it zooms in on images or chunked parts of web pages. A second double‐tap zooms back out.

       Swipe and flick. To swipe means to drag your finger across the screen. You use this technique to scroll through lists, drag items to different spots, and unlock the iPhone. Flicking is just an exaggerated swipe. This rapidly scrolls through lists. Flick your finger up and down (or sometimes left and right) on the screen and the iPhone rapidly scrolls through the list. The faster the flick, the faster the scroll. Touch the screen to stop the scrolling process.

       Spread and pinch. You use these techniques to zoom in on or out of the screen. To spread means to move two fingers apart, and you use it to zoom in; to pinch means to move two fingers closer together, and you use it to zoom out. This is especially useful when viewing web pages because the text is often too small to read. Spread to zoom in on the text, making it readable, and pinch to return to the full screen for easy scrolling and navigation.