Many factors influence how long a phone lasts between charges.
We chart the changes Apple has made to its iPhones over the years
APPLE SURPRISED MANY by offering
a branded case for the iPhone 6,
and not only because the clunky
design isn’t up to the company’s
sleek standards. The $99 (£65)
Smart Battery Case was seen as
an admission that the iPhone is
falling behind on battery life, as
it features an integrated battery
offering an extra 18 hours of
time between charges.
Apple steadily increased the
iPhone’s battery size until the
latest launch: the iPhone 6s has
a smaller battery than the iPhone
6. However, it doesn’t mean users
suffer, as there are other ways to
extend time between charges than
shoving a massive battery into
a phone. Indeed, our own review
suggested there’s no difference in
battery life between the 6 and 6s
Larger batteries do mean
bigger phones: while the iPhone
progressively thinned from
12.3mm with the 3G in 2009
to 7.1mm with the 6 in 2014, it
gained a few tenths of a millimetre
this year. In terms of weight, it hit
its lightest with the iPhone 5 and
5s, putting back on the pounds –
well, grams – with the 6s and 6s
Plus the heaviest models yet
Battery life and battery size
Size isn’t everything, especially when we’re talking
batteries. A lot can influence how long a phone lasts
between charges, from display size and pixel density
to the chipset it uses and how well it’s optimised.
Consider the Google Nexus 6: it ranks mid-table
in our chart of eight top smartphones’ battery life
in our video-rundown tests, despite having the
largest battery of the bunch. Meanwhile, the
Samsung Galaxy S6 Edge squeaks out an extra
three hours between charges despite having a
battery that’s 620mAh smaller.
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