[tambourine_man]

You can barely put a day's worth of music on your phone

You can get ≈16h of 128K VBR MP3 in a single gigabyte.

The real problem is video. Those guys are selling 4K devices that can barely hold a full event.

[Zpalmtree]

128k is pretty awful quality though.

[tambourine_man]

It's not. You need great ears and even greater hardware to distinguish it from uncompressed in AB testing (on recent enough LAME encoder).

But if you must, go 192k/256k, which is pretty much guaranteed to be indistinguishable for almost all wetware/hardware combination in the world and would still get you about 12h in a gigabyte.