2. Keys test
：
Follow the test interface instructions, test keys from left to right, from top to down in order, if the
key is workable, the highlight bar will jump to the next key test automatically. This function test
requires appropriate strength to press the right key.
3. Indicator light test
：
When test, observe whether the indicator light is bright and its color is accurate.
4. Sound/Vibration test:
Check whether the speaker, vibration and sound are normal.
5. Scan data test:
When you change the scanner, you need to click “Collect data”, then click “Scanner reset” to
initialize setting, notice that the model of replacement should be same as the displayed version,
then scan the 1D barcode to see if it can collect data normally.
6. Call test
：
Press the scan key to start call test, dial different telecommunications providers,
once the
telephone is connected, check whether the sound of headset is normal.
7. Microphone test
Blow against the microphone to check whether the sound of headset is normal.
8. Camera test
：
Check the camera focus and take photos, then check whether the photos are clear (remember to
delete these photos), whether flash light is normal.
9. USB charge test:
Connect the USB cable to computer or laptop, another part plug in the USB port of this device,
check whether the charge indicator is bright, and the battery power icon in the upper right corner
of the screen should display this device is charging now.
10. USB connection test:
When you find the USB connection icon and Android icon in the upper left corner of the screen,
you can start to test, then press “OK key” to test USB cable connection.
11. GPS test
：
Place the machine vertically in outside no shelter, once the location information occurs (latitude
and longitude digit), the test passes.
12. NFC test
：
Let the test card close to the tag in the back cover area, check whether the device can read the data,
if there is no NFC function, skip this step.
