I just got off the phone with Apple’s Greg Joswiak, who was eager to combat a lot of the bad reporting going on out there about the iPhone’s battery lifespan.
Short version: After 400 complete charges (and that means complete, drain-it-till-it-dies), the iPhone loses 20 percent of its battery capacity. Not what the much-disseminated CNET review says, which is that after 400 charges the battery is dead. 80 percent = not dead.
Long version? Read my full blog post at Macworld.com.
I also got the official answer for why the iPhone’s headphone jack is recessed, but I’m going to save that for another post.
Damn you for that headphone jack tease!! For some reason it really peaked my curiousity, the only reason I can think of for it is that Apple doesn't really want you using headphones w/ out a mic because it makes it more difficult to answer the phone or some such thing.
I'll bet it's to provide strain relief for the actual contacts in the headphone jack, many of which failed on iPods due to flexing.
Oh, and thanks for the battery info. There is probably more misinformation about li-ion and li-polymer batteries on the Internet than any other topics, with the possible exceptions of sex and poltics [g], so this is a breath of fresh air.
May I post a link to my own discussion of this issue, which gets a lot of readership every day?
http://www.vsa.cape.com/~danh/ipod.htm
-dan
I submitted feedback to C|Net suggesting (nicely) that they correct the information about the battery.
One has to wonder why they haven't fixed this.
can an iphone batery be replaced by other battery if my is dead? i replace my iphone batery with a sony erccson of 3.6v and 950mAh
and iphone battery is 3.7V 1400mAh
it worked but didnt charge on the iphone i hade to remove it charge it than put it back any solution ??
note that im outside us and no apple store and radioshak stors are in my area