Samsung launched two versions of its new premium phone, flat screen Galaxy S7 and the curved screen Galaxy S7 edge, in Barcelona where the industry is gathered for the start of the Mobile World Congress today, in its latest attempt to remain ahead of Apple.
    
While the new models included a better battery and a card slot to expand memory for pictures and other media, analysts said the upgrades may not be enough to revive sales.
    
Forrester consumer mobile analyst Thomas Husson said the new Galaxy devices "offer mostly incremental value to consumers via more advanced technology specifications."


    
Rival South Korean tech firm LG sought to steal Samsung's thunder by unveiling its new premium handset, the G5, its first modular smartphone which is made using different components that can be independently or replaced such as a removable battery.
    
The G5 comes with several accessories such as a sound system developed by Danish firm Bang & Olufsen and a virtual reality headset which will allow it to compete with a the headset launched by Samsung late last year, the Gear VR.
    
"With its modular design, to change batteries and add accessories, LG's new flagship smartphone is renewing LG's portfolio and a smart attempt to challenge its eternal Korean rival," said Forrester analyst Thomas Husson.