I am using a Samsung M31. It has inbuilt Dolby in it but I feel like the Dolby doesn't work for bluetooth speaker or when connected to cars. The audio output is not that appreciable. Any suggestions????
Dolby support is available only for Dolby compatible devices. If the spaker you are using is not stereo or not Dolby compatible, you won't feel a difference.
Also to add to this, you need a high bitrate music file and a minimal compression one (.flac files preferred) to hear a noticeable difference.
It has nothing to do with full version or something like that, so to inform you, the solution you accepted is not a valid one.
