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.
Step 1. Make a phone call using your iPhone's Phone app. An on-screen display appears with in-call options. Step 2. Tap the Mute icon -- a microphone icon with a diagonal line through it -- until the background on the button fills in, showing that you've muted your line.Related Reading: How to Mute in Skype on the iPad. Step 3. Tap the Mute icon until the background changes to black to stop muting your phone call.n on-screen display appears with in-call options. Step 2. Tap the Mute icon -- a microphone icon with a diagonal line through it -- until the background on the button fills in, showing that you've muted your line.