After having this for less than a day I suddenly realized I wasn't getting any vibrations on notifications or anything else. To these it I put the phone completely into "vibrate", had the vibrate icon up at the top of the screen, then called it. Display showed incoming call, but alas no vibration at all. Tried shutting down, restarting, pulling battery, etc. all to no avail. T-Mobile is sending me a new one, hopefully this one works. This one also had the "wifi death grip issue". I would have full wifi signal strength and if I turned it sideways the signal would drop out. I found though if I tilted it back may 20 or 25 degrees degrees the wifi would come back. How many of you have ended up returning your initial sensation due to some significant bug, or outright defect?