Screen
The screen appears blank
1.When a call lasts longer than one minute, the screen automatically turns off. Press any key except Power/End to wake up the screen. Pressing Power/End hangs up the call.
2.Look closely at the screen. If you can see a dim image, try adjusting the screen brightness (see “Adjusting the brightness” on page 149).
3.If that doesn’t work, perform a soft reset (see “Performing a soft reset” on page 168).
4.If that doesn’t work, connect the Treo to the AC charger (see “Charging the battery” on page 12) and perform a soft reset again.
5.If that doesn’t work, perform a hard reset (see “Performing a hard reset” on page 169).
The screen doesn’t respond accurately to taps or activates wrong features
1.Go to Applications 
and select Prefs 
.
2.Select Touchscreen.
3.Follow the onscreen instructions to align the screen.
4.Select Done.
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