Chinese handset makers are also vying for customers in emerging markets. Samsung faces competition from a slew of handset makers in regions such as Southeast Asia where Lenovo and Xiaomi are expanding.
"In 2014, I expect that even more Chinese vendors will come in and they will put in greater investment in such emerging markets and they will pose a bigger threat" to Samsung, said Ryan Lai, an analyst at research firm IDC.
Latest data shows Samsung is fending off the threat at least in China. The maker of Galaxy smartphones sold a record number of smartphones in the world's most populous country in February, according to Counterpoint Technology Market Research. Apple Inc. tied Lenovo for second even after the launch of the iPhone through China Mobile helped the company boost sales.
Declining prices of smartphones also put pressure on profit margins for components that go into mobile devices, such as memory chips and display panels, two other key products made by Samsung.
Samsung is attempting to cut costs in response to its business challenges. Earlier this year, a mobile business executive said the company will reduce the proportion of ads and promotional fees to revenues. Samsung spent over $11 billion on advertising and promotions for handsets, televisions and other products last year.
Most analysts expected Samsung's bottom line to improve from the current quarter as the latest version of its flagship smartphone, the Galaxy S5, goes on sale worldwide from Friday. It selling the phone for slightly less than the previous version.
