so, you need to make a short swipe left for the back gesture, and a full swipe right or left for the next or previous open app.

•Likewise, you can't use the next/previous app gestures unless you turn them on (see Turn advanced gestures on/off).

•To check if you’re making the gesture correctly, see Use gestures: tap, swipe, drag, flick, pinch.

There are small icons in the bottom right-hand corner of the screen

Those icons represent notifications that you have not opened or dismissed. For most types of notifications, if you do not tap a notification after a few seconds, it becomes an icon in the bottom right-hand portion of the screen. If you see one or more icons, tap anywhere on the bottom of the screen to display your notifications.

Phone

Signal strength is weak

Become familiar with low coverage areas where you live, commute, work and play. Then you know when to expect signal-strength issues.

•If you're standing, move about 3 metres in any direction.

•If you're in a building, move to be near a window. Open any metal blinds.

•If you're in a building, move outdoors or to a more open area.

•Outdoors, move away from large buildings, trees or electrical wires.

•In a vehicle, move your smartphone so that it's level with a window.

My smartphone doesn't connect to the mobile network

•Try the suggestions in Signal strength is weak to improve a weak signal.

•Turn off the phone and turn it on again by turning aeroplane mode on and off (see Turn your smartphone on/off).

•Set your smartphone to work with 2G networks or 3G networks only (see Set roaming and data usage preferences).

•Restart your smartphone (see Restart your smartphone).

I see five bars in the signal-strength icon, but I still can't connect to the network

The signal-strength icon always displays five bars. Your signal strength is indicated by the number of bars that are shaded white.

If most or all of the bars are white , you are in an area of strong coverage.

If most or all of the bars are grey , you are in an area of weak or no coverage.

The person on the other end of the line hears an echo

•Try decreasing the volume on your smartphone—whether you are using the speaker or the earpiece—to avoid coupling or feedback at the other person's end.

•Position the earpiece closer to your ear to prevent sound leaking back into the microphone.

•If you're using the speakerphone feature with your smartphone lying on a flat surface, try turning the smartphone face down (screen facing the surface).

I hear my own voice echo

Ask the person on the other end of the call to turn down the volume on his or her phone or to hold the phone closer to his or her ear.

Chapter 14 : Troubleshooting 195