download free warm lightroom presets here. use this presets on low light portrait. if your photo in low light bring up exposure +1 and you will get better result on your photo.
what is lightroom presets?
Presets is pre-loaded settings stored in lrtemplate, dng etc file, but in lightroom app only dng presets will be worked, so if your love to do your editing/retouching on your mobile.
compatibility and features :
-preset in .dng file
-work on every photo
Warm Lightroom Preset - Lightroom Mobile Preset