I can tell between my DAP and my phone. A newer DAP with a current DAC chipset is the way to go. The fault of the LG V30 is the high price. It can double as a competent DAC, but why sacrifice your phone to dedicated DAC duty when you can get a low cost phone and a standalone DAP for about the same price of the LG V30 alone. A current DAP (Digital Audio Player) is the way to go, to be sure.
The people who are claiming that there is nothing to be gained from a dedicated, current component containing a high quality DAP/DAC either cannot hear from being old or their hearing is compromised. The separation and fidelity of a dedicated DAC unit can be heard loud and clear. There is no substitute for a current, dedicated DAC unit.