5
4. Overall operating standards and precautions
4.1. Operating standards
5. Structures and Functions
5.1Atthetopofthefunction
1、power
2、Volume+，‐
3、barcodewindows
4、P‐KEY,H‐KEY
5、F‐key
5.2Frontfunction
1、lightsensor
2、frontcamera
3、LCDandtouchpanel
