I bought this charger for use with a Samsung Fascinate and a Droid X, and on both phones, when they are plugged in, the touch screen is completely unresponsive. In other words, you cannot do anything on your phone while it is charging. Also, when a call comes in, you have to unplug, turn off the screen, then turn it back on, to activate the screen so you can answer a call. I haven't tried it, but I am sure you would have the same problem if you use your phone as an alarm, and wanted to turn the alarm off once it goes off.
- Would you recommend this to a friend? No