"Why do I hear no audio through my Xiaomi Mi 3's speakers?"に関する回答If your external audio is not working properly you should try to check if the phone is set to low volume, or is muted; the auxiliary port is obstructed due to debris; the auxiliary port is broken.
"I dropped my Xiaomi Mi 3 in water, what do I do?"に関する回答At this unfortunate situation, what you should NOT try to do after removing your phone from the liquid is to turn it on. If you do so, a short circuit may occur to your device taking the risk of having a permanent damage. Wipe off the phone with a dry towel as best as possible. Remove any accessory on your phone such as phone cases and the SIM card. You can then use a hairdryer on COLD setting to dry the phone, and then put the phone in a warm area to dry for a day. Make sure your device is dry and attempt to power the phone on. If the phone cannot be powered on after being completely dried off then some of its components were likely damaged and the phone will require further inspection of its internal components to return the phone to operational condition.
"Why is my Xiaomi Mi 3 getting hot?"に関する回答If your Xiaomi Mi 3 getting hot you should try to disable or uninstall apps and features which often consume large quantities of RAM or processing power. In addition to, turning off the Bluetooth and Wi-fi helps keeping your device at the right temperaure.