Water damage?

My phone's speaker is not working. Meaning that whenever anyone calls me or vice versa, I won't be able to hear a thing. I don't know if the cause of it is water damage because that phone has never been dipped in excessive amount of water for any amount of time, but water/milk from Irfan's bottle spilled on it adalah.

Since the phone was bought early this year, I could still claim the warranty. But because that sales girl detected that my phone has been 'dipped in water', she told me that the warranty is void. What I refused to don't understand is that - after googling about the warranty clauses - it is said that a dip in water won't usually damage the phone itself, but only the battery. So why is it that even though the damage is NOT A RESULT OF WATER DAMAGE, the warranty is still void? While it's clearly stated in the warranty form that it'll be void if the damage is A RESULT FROM water damage.

Eeeeeeeee, benci tau! Luckily it's not a blackberry, kalau tak mesti menangis tak berlagu! Anyway, just want to share this with you guys :

# Most modern phones have more than one liquid damage indicator (stickers that change color when wet) on them, only one visible to you (and sales/technician agents), and chances are, if the sticker under the battery is triggered, then the odds are that the internal stickers you can't access are tripped as well. This will still result in you paying a voided-warranty fee in the long run. Warranties don't cover water damage, insurance does. And not all insurance companies or plans will honor water damaged phones.

# Be warned that manufacturers place stickers that will display "void" once peeled and some will change colors in the presence of a liquid (usually turns blue or red). This helps techs know that you have dropped it in the water, as most cell phone insurance coverage policies don't cover water damage. Also note that these stickers have been known to change colors in extreme humidity as well.

So, any tips on how to keep our phone from kena even a drop of water?