https://wccftech.com/galaxy-s9-dual-sim-testing/

Dual-SIM phones are always a convenience, negating the requirement to carry around multiple devices so that you can carry a single smartphone in your pocket. Samsung has always released dual-SIM flagship variants with every iteration, but these models took some time to arrive to the market.

According to the latest rumor, the company has started to pick up the pace in testing the dual-SIM variants for the Galaxy S9 and Galaxy S9+. This could provide a negligible amount of evidence that the tech giant could be getting ready to release these devices earlier in 2018.