The electronics titans square off in a tangled tale of mobile technology, centered on Apple's iPhone
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There may be no Android, but Samsung's Z phone running its in-house Tizen operating system looks enough like the Galaxy S5's custom interface to easily get around.
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Samsung has updated its business-focused Knox with a dedicated app store and split billing so you can pay for work and personal calls separately.
This eight-core mobile from UK-based underdog Kazam also offers a 720p resolution and an 8-megapixel camera. We go hands-on
Japanese carrier NTT DoCoMo is expected to offer variants of the Samsung Galaxy S4 and Sony Xperia Z1 in the coming weeks.
Samsung's first Tizen phone, expected to launch this week, was a no-show in Moscow.
The Korean electronics giant will show the phone at the Tizen Developer Conference, taking place this week in San Francisco.
The Samsung Z is the company's first smartphone running the open-source Tizen operating system.
It may not run Android, but this handset has Samsung written all over it.
The Korean electronics giant, which posted a 25 percent drop in operating profits, says the second half of 2014 "will remain a challenge" as price competition in smartphones hurts profitability.
Electronics giant predicts 24 percent decline in operating profit due to a slowdown in the smartphone market.