The 4.2.6 has got setting where you can change the pitch roll and yaw. They don't show up on my Samsung s8 setting. Here's a few pictures to show you. Has anybody else got these and can change their values.
You should connect your Spark to DJI GO before reviewing/changing the settings. DJI GO will sometimes show you settings that are really not available when the Spark is disconnected from DJI GO.