TABLE OF CONTENTS
Revision History.................................................................................................................................... iii
About This Guide
Introduction........................................................................................................................................... ix
Documentation Set ......................................................................................................................... ix
Configurations....................................................................................................................................... ix
Chapter Descriptions ............................................................................................................................ x
Notational Conventions......................................................................................................................... x
Related Documents and Software........................................................................................................ xi
Service Information............................................................................................................................... xi
Checking Operating System Version.............................................................................................. xi
Chapter 1: Getting Started
Introduction .......................................................................................................................................... 1-1
Unpacking ............................................................................................................................................ 1-1
Features ............................................................................................................................................... 1-2
Getting Started ..................................................................................................................................... 1-4
Installing a micro SIM Card (ET55 Only) ....................................................................................... 1-5
Install a microSD Card ................................................................................................................... 1-8
Charging the ET5X ........................................................................................................................ 1-9
Removing the microSD Card ............................................................................................................... 1-10
Turning Off the ET5X ........................................................................................................................... 1-11
Turning Off the Screen ........................................................................................................................ 1-11
Turning Off the Radios ......................................................................................................................... 1-11
Adjusting the Volume ........................................................................................................................... 1-12
Checking Battery Status ...................................................................................................................... 1-13
Main Battery ................................................................................................................................... 1-13
Power Pack .................................................................................................................................... 1-14
Battery Management ........................................................................................................................... 1-15
Battery Saving Tips ........................................................................................................................ 1-15
Changing the Power Settings ........................................................................................................ 1-15
Manually Changing the Display Brightness ................................................................................... 1-16
Automatically Changing the Display Brightness ............................................................................ 1-16