An abundance of chipsets and smartphone announcements were made this week. Vivo introduced the affordable Y21 and Y11 5G in India, while OnePlus introduced the small but potent 15T in China. Samsung revealed the Exynos 1680 chipset for mid-range handsets, and Redmi hinted at the Note 15 5G before its April 2 release. Vivo's X300 series and Pad 6 Pro are soon to be released, while Huawei made waves with the Enjoy 90 Pro Max and the gaming-focused Mate 80 Pro Max Wind Edition.OnePlus 15TPowered by Qualcomm Snapdragon 8 Elite Gen 5, the OnePlus 15T is a small flagship phone…