We evaluate budget-priced phones the same way we do flagships. We perform real-world testing and synthetic benchmarks over several days to evaluate it’s performance and value. This includes our own battery test, which involves continuous web surfing over cellular at 150 nits of screen brightness. The devices that make our best phone battery life list tend to last over 11 hours.
In terms of performance, we use Geekbench 5 to measure overall speed and compare versus phones in the same price range. And the same thing goes for GFXBench for graphics testing. We also perform our own video editing/transcoding testing using the Adobe Premiere Rush app to gauge real-world speed.
For evaluating cameras on cheap phones, we will take multiple photos in different conditions and will use other affordably priced phones in the same scenarios in order to make side-by-side comparisons.