In no particular order;

* Camera locks up, esp. in Scenes options. Takes minutes to unfreeze
* Video has ticks and skips A/V recording frames.
* Attachments not getting to sender somewhere around 75% to 95% of time <<<-----VERY ANNOYING
* Unplug from USB it still things it's connected, have to reboot.
* Plug into USB, it refuses to charge. Have to unplug, and replug.
* Music still has ticks while multi-tasking.
* Crashes more than my Droid did. Just sayin.