US20 Series
User Manual
7
2.5.3 Factory Reset ......................................................................................................... 24
2.6 Connecting with a PC ........................................................................................................ 27
2.6.1 How to Connect ..................................................................................................... 27
3 Using the Application Screen ...................................................................................................... 28
3.1 Phone Function .................................................................................................................. 28
3.1.1 Basics ..................................................................................................................... 28
3.2 Wi-Fi .................................................................................................................................... 29
3.2.1 Setting the Wi-Fi Feature ...................................................................................... 29
3.3 Scanner .............................................................................................................................. 31
3.3.1 How to Use Scanner .............................................................................................. 31
3.3.2 Using the Scanner ................................................................................................. 31
3.4 Bluetooth ........................................................................................................................... 32
3.4.1 Setting the Bluetooth Feature ............................................................................. 32
3.4.2 Connecting Using Bluetooth ................................................................................ 33
3.5 NFC ..................................................................................................................................... 34
3.5.1 Setting the NFC Feature........................................................................................ 34
3.5.2 Connecting the NFC Feature ................................................................................ 35
4 Advanced Use ............................................................................................................................... 37
4.1 OS Update .......................................................................................................................... 37
4.2 Key Setting Conversion ..................................................................................................... 38
4.3 Battery Hot swap ............................................................................................................... 41
4.4 Fast Charging ..................................................................................................................... 42
5 Others ........................................................................................................................................... 43
5.1 US20 series Device Specifications .................................................................................... 43
5.2 Service ................................................................................................................................ 45
5.2.1 Contacts ................................................................................................................. 45