Apple iPhone 5S and 5C handsets unveiled in California

Apple has unveiled two new handsets: the
top-end iPhone 5S and a cheaper iPhone 5C
at an event in California.
The 5S introduces a fingerprint sensor built
into the phone's main button to identify the
user. The 5C comes with a plastic back in a
choice of colours.
It marks a change of strategy for Apple which
had not launched two distinct types of handset
at the same time before.
The iPhone is the firm's most important
product in terms of earnings power.
The new fingerprint system can be used to
unlock the phone and provide authentication
for purchases from Apple's online
marketplace.
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