Just a note to all, the popular 'rice trick' has no basis in reality,
the recognized methods to save wet electronics are to:
1-remove power and battery immediately
2-disassemble completely
3-if possible wash circuit boards(except camera and other vulnerable electronics like mic or speakers) with alcohol 70%(Isopropyl, methyl, ethyl, or similar) or higher concnetration(fire hazard, follow warnings on container or MSDS).
4-circulate air, ideally blower between 50-100C but a fan will work try to give it at least 12 hours if not 24 to air dry before considering reassembly and power.
Compressed dry air or gas can help initially but be careful that nozzle pressure does not blow off some more fragile surface mount components or small parts.
(edit)I would be careful about using a reflow oven as I suspect if you had trapped water it could popcorn(stem pressure) a component off.
If you need a mobile solution you can possibly use vacuum or heat desiccated silica gel packets stored in an airtight container though even then alcohol(70% or higher) is both more available and likely more effective in removing the wetness immediately.
(edit)
Up-thread distilled water is mentioned, yes this can be good but alcohol is still better as it evaporates quickly, but for an item dropped in sea water even faucet water is good to start.
I also advise caution as you an easily get to uncontrolled reflow(melted solder) temperatures with some hair dryers, don't accidentally reflow components off of your board!!
With the hair dryer think this double that you can easily melt case plastic with a hair dryer, follow the disassembly instructions above and follow the 12 -24 hour program if at all possible.
Even with ideal following of instructions you only have maybe a 30% chance.
the recognized methods to save wet electronics are to:
1-remove power and battery immediately
2-disassemble completely
3-if possible wash circuit boards(except camera and other vulnerable electronics like mic or speakers) with alcohol 70%(Isopropyl, methyl, ethyl, or similar) or higher concnetration(fire hazard, follow warnings on container or MSDS).
4-circulate air, ideally blower between 50-100C but a fan will work try to give it at least 12 hours if not 24 to air dry before considering reassembly and power.
Compressed dry air or gas can help initially but be careful that nozzle pressure does not blow off some more fragile surface mount components or small parts.
(edit)I would be careful about using a reflow oven as I suspect if you had trapped water it could popcorn(stem pressure) a component off.
If you need a mobile solution you can possibly use vacuum or heat desiccated silica gel packets stored in an airtight container though even then alcohol(70% or higher) is both more available and likely more effective in removing the wetness immediately.
(edit)
Up-thread distilled water is mentioned, yes this can be good but alcohol is still better as it evaporates quickly, but for an item dropped in sea water even faucet water is good to start.
I also advise caution as you an easily get to uncontrolled reflow(melted solder) temperatures with some hair dryers, don't accidentally reflow components off of your board!!
With the hair dryer think this double that you can easily melt case plastic with a hair dryer, follow the disassembly instructions above and follow the 12 -24 hour program if at all possible.
Even with ideal following of instructions you only have maybe a 30% chance.