Samsung pins hopes on curvy phone
2 March 2015 Last updated at 03:00 GMT
The Mobile World Congress is under way in Barcelona, where mobile phone companies show off their latest gadgets and innovations.
For South Korea's Samsung, it's a platform to try to convince the world it still has what it takes.
Lately, we've heard more about sales drops and salary freezes than smartphones.
The BBC's technology correspondent, Rory Cellan-Jones, reports from Barcelona.