Sony Xperia Z
A quad-core processor means business and a 5-inch screen is bigger than iPhone 5 and the Samsung Galaxy S III.
The 13-megapixel camera also beats both rivals and comes with 4G as standard. It's not only the most powerful smartphone Sony has made but a sign that it desperately wants to make a proper dent in the smartphone market in 2013 against a lacklustre performance in 2012. As a surprise, it also packs twice as much RAM (2GB) as many of its rivals.
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