i have a ticket started with verizon for an annoying feedback sound on just about every call. not a high pitch squealing, but it sounds like something in the background is booting up. very annoying. and even when its not there the quality of calls is not that great for such a pricey phone. my bb curve was 100 times better with call quality. i paid $369. for this phone and am disappointed in call quality, it might be going on ebay