Audio for any app cuts in and out every few seconds. This happens only on speakers (normal on earphones) and only when connected to the charger. The audio cuts are brief and often and seemingly random. Audio cuts out completely for like half a second (sound doesn't fade) and comes back, almost like when a video is lagging from buffering. Phone is new (2 months) and this problem started out of nowhere for no reason (didn't drop phone). I would really appreciate it if someone can give me suggestions on how to fix it.