image processing
SNAP tool -> Grid file -> Raster-> subset-> Radiometric calibration ->speckle filtering-> geometric correction ->export .tiff
You can find single bands in .jp2 format in the IMG_DATA folder of Sentinel-2 data. If you import this type of file into envi then you can process the image. As first you have to do a layer stacking and then whatever you want.
Thank u for ur reply Alberto Crema.
From the main ENVI menu select File | Open As | Optical Sensors | Sentinel .
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