Just want to point out that whenever comparing older devices with newer ones, there's a lot of trade-offs involved -- newer gadgets will hopefully be more optimized and efficient but conversely things like larger, higher resolution displays and faster, multi-core CPUs and GPUs will tax any battery a lot harder. But not knowing just what kind of phone a 'Taccone' is, it's hard to compare its specs with a Note 10 Plus. If that Taccone did have similar capabilities and hardware specs as your Note 10 Plus, than yes doing a direct battery life comparison between the two applies. If it's instead something similar to just an old flip-phone, than such direct comparisons involve two very different categories of devices -- they may both be 'phones' but the former has a limited feature-set by design (requires little battery power), the latter has a constantly growing feature-set on top of faster, bigger hardware (requires much more power).