Droped calls every time i make a call on my phone it gets dropped immediately after connecting. and i also repeatedly tried to call my number from another phone but my phone has no response. I have taken good care of my phone, haven't dropped it any place besides the living room carpet and no water damage (as far as i know). I don't get it.

AT&T Wireless has their systems set up to first look on their digital, or TDMA service for the active account for the dialed number, and if no account is found, it "transfers" the call to the GSM system (all done within the blink of an eye and unknown to the caller/wireless user). Im not sure of your carrier but they all work similiar. If the part of your service that tells their system to "transfer" the call to GSM is not there, callers will get a message saying that the phone is disconnected and will not ring through to the phone, but you're still able to place calls in the meantime. Easiest, and probably quickest way, to find out if its that or something else is probably to call their customer service and have them check things with your phone and account.