A given computer display system will have a maximum resolution that depends on its physical ability to focus light (in which case the physical dot size-the dot pitch-matches the pixel size) and usually several lesser resolutions.
Using the Speakerphone in Calls. You can turn on your iPhone's speakerphone when you make a call and the recipient answers, or when you accept an incoming call. In both cases, a menu screen appears on your iPhone.To switch to speakerphone, tap the Speaker button which turns blue when activated.To turn off the speakerphone at any time during a call, tap the button again.n both cases, a menu screen appears on your iPhone. To switch to speakerphone, tap the Speaker button which turns blue when activated. To turn off the speakerphone at any time during a call, tap the button again.
1 Tap on AssistiveTouch. 2  Turn On the option for AssistiveTouch. 3  A new circle button will appear on your screen. 4  Tap on it. 5  In the popup menu, tap on Device. 6  Press and hold on the option for Lock screen. 7  The Slide to Power Off dialog will appear and you can slide your finger to power down your iPhone.