User ManualTable of ContentsIntroduction3Safety precautions3Regulatory information12Handling cautions22Trademark and license information26Terms and illustrations in this document27Disclaimers28Getting Started29Confirming the included items29Description of parts30Opening and closing the interface cover34Removing the battery cover35Attaching the battery cover36Installing SIM cards (certain models only)38Installing an SD card39Installing the battery40Charging the battery40Turning the unit on and off41Screen display42Basic operations44Troubleshooting46Appendix51Replacing the battery51Enabling the internal heater51Factory data reset52Specifications52Accessories58Limited warranty59Size: 3.09 MBPages: 64Language: EnglishOpen manual