3.3.1. Alpha Key of 28-key Model ................................................................................. 112
3.3.2. Alpha Key of 25-key Model ................................................................................. 114
3.4. Function Key (only for 25-key Model) ................................................................. 116
3.5. Shift Keys ............................................................................................................. 119
3.6. Key Functions in Different Modes ...................................................................... 121
3.6.1. For 28-key Model Keypad ................................................................................... 121
3.6.2. For 25-key Model Keypad ................................................................................... 122
3.7. Keypad Lock......................................................................................................... 124
3.8. Enterprise Settings .............................................................................................. 126
3.8.1. Disable Special KeyEvent ................................................................................... 127
3.8.2. Change blue key Input Method ........................................................................... 128
3.8.3. Physical Keypad Sound ....................................................................................... 131
3.8.4. Doze Mode ........................................................................................................... 131
3.8.5. Convert UHF EPC to ASCII ................................................................................... 132
3.8.6. Version ................................................................................................................. 132
BASIC OPERATION ........................................................................................................................ 133
4.1. Home Screen ....................................................................................................... 134
4.1.1. Application & Widget on Home Screen .............................................................. 135
4.1.2. Folder on Home Screen....................................................................................... 137
4.1.3. Current Applications ............................................................................................ 138
4.2. Status Bar ............................................................................................................ 139
4.2.1. Icons on Status Bar ............................................................................................. 139
4.2.2. Open Quick Setting Menu ................................................................................... 141
4.2.3. Open Notifications Drawer .................................................................................. 144
4.3. Suspend & Lock ................................................................................................... 147
4.3.1. Suspend Device ................................................................................................... 147
4.3.2. Lock Device .......................................................................................................... 148
4.4. OS Update ............................................................................................................ 151
4.4.1. Network Update ................................................................................................... 151
4.4.2. SD Card Update ................................................................................................... 153
4.5. Back up Your Data ............................................................................................... 154
4.6. Reset to Factory Default...................................................................................... 156
4.6.1. Erase All Data (Factory Reset) ............................................................................ 156
4.6.2. Erase All Data (Factory Reset with enterprise) .................................................. 157
4.6.3. Welcome Wizard .................................................................................................. 158
WIRELESS RADIOS ........................................................................................................................ 162
5.1 Use Wireless Local Area Network (Wi-Fi) ........................................................... 163
5.1.1. Connect to Wi-Fi Network .................................................................................... 163