This is probably old-school, but I've traditionally shut down my phone before recharging every night. The rationale was that the phone would recharge faster if it wasn't having to stay "on" at the same time. However, given that modern phones (particularly the S3) are often used as alarm clocks, etc., it would seem that leaving it on 24-7 may be the new norm. Is there any harm in this? Is there any real benefit from shutting down the phone completely while charging overnight?