Problem exporting music

Hello,

I have a problem with the audacity, i record conferences and edit it with audacity,but when am gonna export the voice with a background music, it´s sounds great with my highspeaker, the problem is when i pass it to a phone (any phone),the background sounds very high and the voice is veeeeery low, it´s sounds like when we have a cable conect it incorrectly or like as we had a vocal remover or something, but in a highspeaker or a tablet sounds great, i dont understand, i appreciate your help,

Please help.

I didn't find the right solution from the Internet.

References:-
https://forum.audacityteam.org/viewtopic.php?f=64&t=94974
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Thanks