Sony Xperia X Manual page 46

If liquids (water, pet urine, etc.) seep inside AC Charger power plug, unplug it immediately.
Failure to do so may cause electric shock, smoke or fire.
If plug is dusty, grasp AC Charger power plug and unplug it, then clean with a dry cloth.
Failure to do so may cause fire.
When plugging AC Charger power plug into outlet, keep conductive materials (pencil leads,
metal parts, necklaces, hair pins, etc.) away from AC Charger power plug/connector and plug
AC Charger power plug firmly into outlet.
Failure to do so may cause electric shock, short circuit, fire, etc.
Do not plug in/unplug AC Charger power plug with wet hands.
May cause electric shock or malfunction.
Do not touch AC Charger if thunder is audible.
May cause electric shock, etc.
Grasp AC Charger power plug and unplug it before cleaning.
Failure to do so may cause electric shock, etc.
Always grasp AC Charger power plug (not cable) to disconnect it.
Pulling cable may damage cable, causing electric shock, fire, etc.
Do not subject AC Charger (optional accessory) to strong shock or impact while it is plugged