my droid razr maxx has started to show signs of having battery calibration issues, as lately i've been unable to get the phone to charge all the way up to 100%, usually stopping at 90% and most recently 80% --- however, my beloved razr maxx is about to go away because the micro USB port has crapped out, leaving me with a wonderful phone that's still got another ~2/+ years of life left in it (as i assumed i'd be able to get a 3 year run out of it @ purchase) and therefore prolly still worth $250+ on the open market, however, some little 10 cent piece of connectors has crapped out, meaning that this wonderful $250+ phone is effectively useless.
it just goes to show that you can build a phone as solid as a tank, able to survive the most inhospitable conditions including (but not limited to) a few decent lil carpeted falls and the general rigors of being a well used comptuerphone, but in the end.... all it takes is one stupid little 10 cent connector port to go bad, and low and behold you're back in teh clutches of the phone companies who have a vested interest in getting you to "upgrade" or play a fun game of routlette via insurance (i.e. "am i getting the same make of phone? you know, the one i went out and purchased and pay $8/month to insure? is that too much to ask? if it's not, can i get a new one as opposed to a refurbished one plz?)
AHEM. my bad on the mini tangent.... you can guess what topic compelled me to register @ the forums, eh?
so yeah my bad on the self-indulgent drivel dude, but long story short from my research (i.e. verified in ~2 other places) the best way to figure out where you stand with the battery meter is to do that down-to-0%/charge-while-its-off thing and give the phone a chance to experience both extremes in a situation where there isn't an operating system running via all of the horsepower of the equipment in the phone. it makes sense in an empirical level if you think about it.