Tech-giant Samsung on Sunday launched Samsung Galaxy S9 at Mobile World Congress 2018 here. The handset, which will be available on all major carriers in the US as well as unlocked direct from Samsung, has been priced $719.99 and $839.99 for the unlocked models, while the carrier pricing ranges from $720 and $840 to $800 and $930. In colours such as black, purple, blue and grey, the handset will likely have other colour options later in the year.