HP Pre3 Guia do Utilizador descarregar pdf (Página 193)

Chapter 14 : Troubleshooting 193

4 Grasp the tab and pull it up to lift the battery out of the

compartment.

5 Replace the battery.

6 To replace the cover, first fit the cover over the buttons at the top of

the smartphone, and then press all clasps to fasten the cover to the

body of the smartphone.

7 Press and hold the power button on the top right-hand corner of your

smartphone until you see a logo on the screen (approximately five

seconds). Your smartphone needs a few seconds to start up.

Screen and performance

The screen appears blank

If you hold the smartphone up to your ear while on a call, the screen goes

dark. This is normal behaviour. It prevents your accidentally tapping an

item on the screen and saves battery power. When you take the

smartphone away from your ear, the screen automatically turns back on,

ready for use. If the screen doesn't turn on fast enough for you, tap the

screen to wake it up.

The same behaviour occurs any time you're on a call and the smartphone

screen is placed near another surface. The screen turns on automatically

(if the smartphone is still on) when you move the smartphone away from

the other surface.

When the smartphone is on and idle, the screen first dims and then turns

off. This also is normal behaviour, caused by the auto shut-off interval. You

can adjust this auto shut-off interval to be as long as three minutes (see Set

the interval for turning the screen off automatically). At first, the screen

dims as a power-saving measure. Just tap the screen to brighten it. Then, if

your smartphone remains inactive for the full interval you set, the screen

turns itself off. Press the power button to turn the screen back on.

Follow these steps in sequence if you can't turn the screen back on:

1 Make sure you have removed the protective cover that came

attached to your smartphone screen.

2 Make sure that there are no stickers covering any part of the front of

the smartphone.

3 To brighten the screen if it has dimmed, tap the screen.

4 To turn on the screen, do one of the following:

• Press the power button. Drag up to unlock the screen.

• Slide out the keyboard.

• If the keyboard is out, press any key.

TIP If your smartphone does not turn on after you press and hold the power

button, you need to connect your smartphone to the AC charger to charge it.

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HP Pre3 Guia do Utilizador Página 193