When I bought my Optimus almost two weeks ago at a Sprint store, the salesman told me I needed to physically remove my battery about once a week. This sounded pretty odd to me, so I have not yet followed this advice. Has anyone else gotten similar instruction/advice? If so, are you following that advice? Is there a technical reason to actually do this? Does removing the battery have a different effect than just doing a full power down? Any information would be appreciated.