Another interesting finding with my buds +.
I got my father in law a pair which he asked me to return as he also owns hearing aids and doesn't want to swap them out.
Anyways. I tried his for fun connected to my phone. Same tips and wings and same settings.
Well my pair has substantially more deep bass.
Don't know why tried swapping his tips to mine and vice versa. His tips seemed slightly different in that the fit was harder to put on maybe because they were new and mine are nearly 3 weeks old.
So not sure if this is a batch thing as his serial was a bit newer than mine or if there is some break in on mine which really improved the bass.
I say this only because some people have knocked these buds as bass light. I agree compared to L2P, but there was really good bass on mine e and so so bass on his. So give the buds some time and burn in. Or try exchanging them if you find the bass lacking after 2 weeks of use.
Just checking, but do both your unit and your father in law's have the exact same EQ setting on the app? Because TWS like these usually store their EQ changes on the unit, so it will sound as they previously EQd even when connecting it to other phones