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Table of content
Table of content..................................................................................................................... 2
1Background.................................................................................................................... 4
2Before using AT880........................................................................................................ 5
2.1 Safety information................................................................................................... 5
WARNIING..................................................................................................................... 5
CAUTION....................................................................................................................... 5
NOTICE ......................................................................................................................... 5
3How to use battery correctly........................................................................................... 5
4Caution when using AT880 ............................................................................................ 5
4.1 Caution when using AT880 ..................................................................................... 6
4.2 Product composition................................................................................................ 6
4.3 Name of each part................................................................................................... 7
4.4 Function of each part............................................................................................... 8
5Basic Function................................................................................................................ 9
5.1 Battery..................................................................................................................... 9
5.1.1 Switch On Backup Battery................................................................................ 9
5.1.2 Attaching and Detaching the battery................................................................10
5.1.3 Charging battery..............................................................................................10
5.2 Power On and Off ..................................................................................................11
5.2.1 Power Off:.......................................................................................................12
5.2.2 Power On........................................................................................................12
5.2.3 Automatic Power OFF.....................................................................................12
5.2.4 Battery Discharging.........................................................................................13
5.2.5 Checking Battery Gauge.................................................................................13
5.2.6 Backup Battery................................................................................................13
5.2.7 Battery replacement........................................................................................14
5.3 Soft Reset..............................................................................................................14
5.4 Hard reset..............................................................................................................14
5.5 Initializing System ..................................................................................................15
5.6 Attaching Micro SD card.........................................................................................17
5.7 Attaching SIM Card and SAM Card........................................................................18
5.8 Screen settings ......................................................................................................19
5.8.1 Screen brightness setting................................................................................19
5.8.2 Screen adjustment ..........................................................................................19