The 5G market is going to explode in 2019 and Huawei plans to be prepared for the event with the upcoming Kirin 990. This would be the company's first 5G-ready SoC manufactured on the 7 nm+ node, so it would also get a 10% performance bump over the newly launched Kirin 980 SoC. First smartphones to integrate the Kirin 990 chip are rumored to hit the market in late 2019.
https://www.notebookcheck.net/Huawei-already-working-on-the-5G-ready-Kirin-990-SoC.360521.0.html
The new Exynos 9820 has a faster modem than the 980 on paper due to the 8CA implementation. How it plays out IRL remains to be seen but Huawei isn't known for a good translation from theoretical values to actual performance either.