2.1.4. Power Management .............................................................................................. 55
2.1.5. Battery Precautions ............................................................................................... 57
2.1.6. Battery Sensor ....................................................................................................... 61
2.2. Memory .................................................................................................................. 63
2.2.1. Check Memory Usage ............................................................................................ 64
2.2.2. Manage Storage Space ......................................................................................... 65
2.3. Touch Screen ......................................................................................................... 73
2.3.1. Screen Brightness ................................................................................................. 73
2.3.2. Screen rotation ...................................................................................................... 74
2.3.3. Screen Timeout Settings ....................................................................................... 78
2.3.4. Text Size ................................................................................................................. 79
2.3.5. Display Size ............................................................................................................ 80
2.4. Notifications ........................................................................................................... 81
2.4.1. Status LED ............................................................................................................. 81
2.4.2. Audio ....................................................................................................................... 81
2.4.3. Sounds and Vibration ............................................................................................ 82
2.5. Date and Time ....................................................................................................... 85
2.6. Language & Keyboard Input ................................................................................. 86
2.6.1. Change Display Language ..................................................................................... 86
2.6.2. On-screen Keyboard .............................................................................................. 88
2.7. Physical Keypad ................................................................................................... 100
2.7.1. Basic Key .............................................................................................................. 101
2.7.2. Alpha Key ............................................................................................................. 102
2.7.3. Function Key (only for 25-key Model) ................................................................. 104
2.7.4. Shift Keys ............................................................................................................. 106
2.7.5. Key Functions in Different Modes ...................................................................... 107
2.7.6. Keypad Lock......................................................................................................... 110
2.7.7. Enterprise Keypad Mode ..................................................................................... 111
2.7.8. Keypad backlight ................................................................................................. 116
2.8. Sound and Volume .............................................................................................. 117
2.9. Data Capture ........................................................................................................ 118
2.9.1. Barcode Reader ................................................................................................... 118
2.9.2. Digital Camera ..................................................................................................... 118
BASIC OPERATION ........................................................................................................................ 119
3.1. Home Screen ....................................................................................................... 120
3.1.1. Customize Home Screen ..................................................................................... 122
3.2. Status Bar ............................................................................................................ 133
3.2.1. Icons on Status Bar ............................................................................................. 134
3.2.2. Open Quick Setting Menu ................................................................................... 136
3.2.3. Open Notifications Drawer .................................................................................. 139
3.3. Manage Applications ........................................................................................... 141
3.3.1. Application Menu ................................................................................................. 141
3.3.2. Current Applications ............................................................................................ 144
3.4. Suspend & Lock ................................................................................................... 145
3.4.1. Suspend Device ................................................................................................... 145
3.4.2. Lock Device .......................................................................................................... 146
3.5. OS Update ............................................................................................................ 148
3.6. Back up Your Data ............................................................................................... 150
3.7. Reset to Factory Default...................................................................................... 151
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