my 5S battery is pretty *good* actually. def go more than a day with fairly heavy usage. not sure what cr, or other people, are doing with their phones.. but calls, texts all day, surfing, some video and music pb, takin pix... no battery issue.
and i for one do not want a phone bigger than the 5. when i want a tablet, i'll reach for a tablet; when i want a phone, i reach for a phone....
I feel the masses are demanding a bigger phone. I hope so much that they release an iphone xl in addition to the current sized phone. heck, i'd probably buy an iphone mini with a 2.5-3" screen if they made one. I just want something small and light to carry with me all the time that is capable when I need it on the go. if I plan on doing much use where i would want a larger screen, i bring a tablet with me. even 5-6 inch phones are a joke for screen size compared to the ipad mini.