Water-resistant mobile phone

So, you're the kind of person that may let your mobile phone inside your trousers pocket when it goes to the washing machine?

Or are you the kind of person that may accidentally drop the old brick in the water? Sure you are. That is why this Instructable is for you.

I will be presenting you a way of protecting a mobile phone from water damage. Two weeks ago, my mobile went for a bath. I managed to fix it, and I will tell you how to prevent the kind of damage I found inside it.


How water damages circuits:

Water isn't the big threat. Short circuits are. When a circuit gets wet, most likely it will short-out. The second thing that causes damages are oxide bridges. You ask what oxide bridges are: water corrodes the metal in the circuit, causing oxide to build-up. That effect is caused by water and salts dissolved in it. If water can't touch metal, no corrosion can take place.

Step 1 Gather weapons & ammo!

What you should need:

- Torx T6 screwdriver
- Acetone if your circuit is greasy
- Paint brush
- Something to contain used solvent
- Electrical tape
- Swabs
- Petroleum jelly
- Guitar pick or something similar
- A piece of string

Of course, you should work with gloves so as not to get varnish or acetone in your hands or unwanted grease in the circuit board.

Comments

[joejoerowley]

Cool! Great Instructable! Thanks Joe

[Esmagamus]

Thank you! It's rewarding that someone likes it after I spent the whole night water-proofing my phone and documenting the process.

[joejoerowley]

Well it is extremely well documented, sometimes an instructable is just missed. Its shame when it a good one like yours.

[Esmagamus]

Well, maybe water-proofing cell phones turns into fashion and then it will be popular. I'm also considering making a Instructable about water-proofing mobile phones in the field. It's a archaeology student's trick: putting the cell phone inside a non-lubed condom and tying it. Reportedly works like a charm in those harsh conditions: dust, sweat and sometimes water. Sometimes people just have to do with what they've got: imagination.

[Mattrox]

I beleive somebody else has made one already about water proofing pdas, phones, and a whole bunch of other stuff

[hishealer]

I like that logo, matt, but I soooo thought it was a cactuar at first... Maybe I should turn the puter off for a while \>^.</

[joejoerowley]

Well that's already on here. Sorry :(

[Esmagamus]

Then I'll just figure out something else. Maybe I'll make an Instructable on how I ruggedized my garage door remotes I usually had to fix one every two months because of my clumbsy family. I've ruggedized them over a year ago and neve had to open one again.

[and-reas]

That's making an unbreakable phone just a little bit more unbreakable! Nice job

[Esmagamus]

Thank you. It did break a while ago but that was because of the keypad. Now I've got a NDrive GPS+PDA+phone (now it's back to the factory to replace a cracked screen).

[bombmaker2]

would this work with a flip phone?

[Mattrox]

Great instructable I don't have a mobile phone but both of my sister have and both have lost a phone to water. I'll be show in them about this. 3.5 stars

[abadfart]

will this work in the shower

[Esmagamus]

Sure, but it is not meant to. Your screen is still unprotected and can get water stains. The purpose of this is to make your phone water-resistant, that is, being able to fall in the water and be dried to action with no or minimal electronic damage.

[The Mollusk]

Wow... not many comments, I'd imagine that more people would care about keeping there phones from geting damaged, just a few questions (great instuctable, by the way) while you're re-assembling the phone, could you coat everything with a thin layer of vasiline to completely water-proof it, or is it to conductive? also If it doesn't work, could

[Esmagamus]

Thank you! Before thinking of varnish, I thought about dipping the phone in molten vaseline, but after some thought I decided not to. I'll tell you why: -Although vaseline is not conductive, phones collect lots of grime and due to some work I usually do around metal, I feared the vaseline could pick up conductive dust and cause short-circuits. -Mobile phones produce heat during phone calls. Vaseline would reduce heat transfer and the circuit would run hotter. Last but not least: -Vaseline melts easily. With over 40ºC during summer, I'd probably have a grease stain on my trousers. I did, however, disassembled the phone later and encased the LED socket in hard wax. I did not encase the parts under the shields because I wouldn't want to cause those parts to overheat.