Acer M220 User Manual - Page 34

34 - Appendix APPENDIX FAQ and troubleshooting This section lists frequently asked questions that may arise during the use of your smartphone, and gives easy answers and solutions to these questions. Aspect Audio Multimedia files System information and performance Power Question Suggestions If the headset is plugged into the device, the speaker is Why is there no sound coming from the device? automatically shut off. the headset. Check that the device setting is not muted. Disconnect volume Check that the volume control is not at its lowest setting. Why can't I view my picture files? You may be trying to view an image that is not supported. See Multimedia on page 41. Why can't I view my video files? You may be trying to view a video that is not supported. See Multimedia on page 41. Why can't I play my music files? You may be trying to play a file that is not supported. See Multimedia on page 41. How do I check the OS version of my device? Tap Settings > Device information to check the OS version (Build number) and other hardware and software information. I can't turn on the device. The battery power may be depleted. Recharge the device. See Charging the battery on page 5 for more information.