No 64-bit smartphones were announced at MWC, though new chips there will pave the way for handsets in coming months
However, the executives stop short of endorsing a Senate bill requiring them to install kill switches on mobile devices.
Qualcomm puts a customized Galaxy Note 3 and next-gen mobile hotspot on display at Mobile World Congress to show off the upcoming mobile technology.
A microscopic coating from P2i coats the electronics inside smartphones to prevent the phones from short circuiting after getting wet.
Yota Devices's updated dual-screen smartphone arrives later this year. Find out more about how it uses an e-ink display to save battery.
The Blackphone handset goes on sale in June for US$629. It looks like a typical Android smartphone and is based on a security-hardened version of the OS called "PrivatOS."
Critics of the bill don't like language added to the legislation that would prohibit bulk unlocking of phones.
Uhuru Mobile is a new ROM derived from Cyanogen that aims to make Android phones more secure.
The LG G Pro 2, Nokia X, Samsung Galaxy S5 and Sony Xperia Z2 among notable newcomers
Intel demonstrates a 64-bit version of Android running on a smartphone with its latest Atom chip,code-named Merrifield.
We've told you about the changes Sony's introducing to its Xperia smartphones and tablets. Now see the new Xperia Z2 phone for yourself in this video report.
As new 4G phones appear at Mobile World Congress, Neelie Kroes is concerned with how young people will earn the money to buy what comes next.
Carriers rejected a technology last year that supporters say would have dramatically cut the number of smartphone theft.