I've run into a problem when my phone is charging and the alarm goes off, if it doesn't wake me up for awhile it gets almost burning hot, and will usually shut down as soon as I try to use it, then won't power back on for about 5 minutes. It seems like the combination of powering the vibrator, speaker, and charging just generates too much heat and I'm worried it will damage my phone, has anyone else had this issue? I'm using the samsung extended battery and samsung charger that came with the phone.