my IPHONE4.... sobsob

Had been having problems with my iphone lately. Person at the other end cant hear me at all after the first 5 sec, but if i used what'sapp to call out, it's fine.. Just the normal phone calling that is having such problem. Today, popped by comcenter after work from office to get it repair. So sad, that service man told me that the mic in the phone is spoilt and the warranty is voided before it is due to water or what vapour gets into the phone and damaged the mic. Now the phone is like having cancer, it will slowly spread to other parts, and the worst is cant get it start up. So if i want to have a 121 exchange, it will cost me $350 but the warranty will only up to Aug 2011 as it's follow the existing phone warranty. Otherwise, i will need to wait till Aug 2011 and do a re-contract. Guess wait till Aug and do a re-contract will be a better option as i dont need to pay that much for another phone + will have 1 year warranty, but will need to go mobile-less for 4 months. no calls, sms and smurfing are ok.... And worst, all the spare phones at home are not able to support micro-sim, so cannot temp use other phone. I had forwarded all the calls to my home phone.. so i wouldnt be missing any calls. When driving, i'm thinking where the hell water gets into my phone.. DA-TAH!!! Janelle.. It's Janelle who had been mouthing everything, includes my phone. My protection sheet has all her teeth mark on it...