1.Click Settings.
2.Select System.
3.Select About phone.
4.Select Model&hardware.
Or dial phonenumber: *#06#

a. Apply RMA list and non-commercial invoice from service center.
b. Please declare delivery as normal USB barcode reader with the piece of $25 per unit and do not send back the accessories especially batteries if they are working fine. Please send back by DHL/Fedex if it is possible since this would be easier for custom clearance. Fill and send RMA request sheet and non-commercial invoice by paper copies. And send the faulty devices no more than 3 pieces in one packet.

Use NFC/HF tags to lean on NFC scan area on rear of C66.

1.Select Camera on desktop.
2.Click to take photo.

1.Swipe down notification bar.
2.Select Bluetooth to config.

1.Swipe down notification bar.
2.Select WIFI to config.

1.Click appenter.
2.Select UHF demo.
3.Press trigger to scan UHF tags.

1.Press&hold power button and volume+.
2.Until you see No commands.
3.Press&hold power button and volume+ again to enter factory mode list.
4.Press volume- to select Wipe data/factory reset.
5.Press power button to execute.

1.Click Settings.
2.Click System.
3.Click Advanced.
4.Click Reset options.
5.Click Erase all data(factory reset).

1.CLick appcenter.
2.Select Barcode2D.
3.Press SCAN button to scan.

Press&hold power button and volume-.

a. Apply RMA list and non-commercial invoice from service center.
b. Please declare delivery as normal USB barcode reader with the piece of $25 per unit and do not send back the accessories especially batteries if they are working fine. Please send back by DHL/Fedex if it is possible since this would be easier for custom clearance. Fill and send RMA request sheet and non-commercial invoice by paper copies. And send the faulty devices no more than 3 pieces in one packet.