All three of these processors are cut from the same cloth, and feature support for dual camera ISP systems, compatibility with Android Marshmallow's Sensor Hub, 802.11 ac WiFi and of course LTE with carrier aggregation support. (androidheadlines.com)
The OnePlus 5T has none of those things: despite using the same Qualcomm Snapdragon 835 platform and baseband solution, its lack of 4x carrier aggregation support limits it to 600 Mbps. (androidcentral.com)
However, thanks to the new iPhone's support of carrier aggregation (LTE Advanced), Sprint's performance should improve, and its current Spark network is fast where available. (tomsguide.com)