The Galaxy A02 sits right at the bottom of Samsung's range, and it is honest about what it is: a large-screened, long-lasting phone for people who mostly need calls, messaging, maps and a browser. The 5,000mAh battery is the star, because the modest MediaTek MT6739W chip and low-resolution screen draw so little power that two days of light use is realistic. That same chip is the phone's limit, though. It is a quad-core part with 2GB or 3GB of RAM, so app switching is slow, heavier social apps stutter, and gaming beyond casual titles is not on the cards. The 6.5-inch screen is roomy but only HD+, so text is softer than you would see on a mid-range phone. Charging is slow at 7.75W, meaning an overnight top-up rather than a quick boost. There is no 5G here either, as the A02 is a 4G-only handset. Buy it as a first phone, a work handset or an uncomplicated device for an older relative, and it does the job well. Ask more of it and it will struggle.