dubi123
Computer
- Oct 25, 2003
- 7
What kind of damage water does to mobile phone (no salt, no sea water). I have an example of mobile phone that was exposed to water for less than a minute, have turned it off and pulled out battery almost immediately and dried it but it doesn't work any more (after days of drying, all methods, mild heat, rice, air-conditioned server room with low humidity). One would probaly think that it burns electronics, but again this small currents through water doesn't seem to me that would cause damage within minute (in a past I have accidentally short circuted CMOS CD4011 and didn't damage it, the chip was hot - again it was not watter but I it was short circuit from the gate output to the ground or so).
Now we have moisture indicators in mobile phones to reveal if phone was exposed to liquid (as I have heard they hide it from users to deny service requests, why hide it from users, tell them that there is moisture sensor inside). If there is already moisture indicator couldn't it be much better to use some sensor to immediately switch of the phone and minimize potential for damage. By the way there is also g sensor included in a phone (could detect free fall). And why not make some protective coating over the PC board to be more resistent agains liquids (heating problem? I don't think so). Looks like producers cont of significant percentage of mobile phones (20% ???) to be damaged by "liquid damage" and increase sales. I didn't go to service with particular mobile, but anyway why hide fact about mositure sensor sounds from user.
Now I am guessing what kind of damage is done to phone, oxides that act like 10k to 1M resistor between pins or wires on PC board, don't know.
Regards
Dubi
Now we have moisture indicators in mobile phones to reveal if phone was exposed to liquid (as I have heard they hide it from users to deny service requests, why hide it from users, tell them that there is moisture sensor inside). If there is already moisture indicator couldn't it be much better to use some sensor to immediately switch of the phone and minimize potential for damage. By the way there is also g sensor included in a phone (could detect free fall). And why not make some protective coating over the PC board to be more resistent agains liquids (heating problem? I don't think so). Looks like producers cont of significant percentage of mobile phones (20% ???) to be damaged by "liquid damage" and increase sales. I didn't go to service with particular mobile, but anyway why hide fact about mositure sensor sounds from user.
Now I am guessing what kind of damage is done to phone, oxides that act like 10k to 1M resistor between pins or wires on PC board, don't know.
Regards
Dubi