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 Accessibility. 2  Tap on AssistiveTouch. 3  Turn On the option for AssistiveTouch. 4  A new circle button will appear on your screen. 5  Tap on it. 6  In the popup menu, tap on Device. 7  Press and hold on the option for Lock screen. 8  The Slide to Power Off dialog will appear and you can slide your finger to power down your iPhone.ow to power down your iPhone if your Lock button doesn't work. 1  Launch the Settings app on your iPhone or iPad. 2  Tap on General. 3  Tap on Accessibility. 4  Tap on AssistiveTouch. 5  Turn On the option for AssistiveTouch. 6  A new circle button will appear on your screen.