One of the smartest things to do when looking for affordable smartphones is considering devices with long battery life. Since battery life is one of the biggest problems on modern smartphones, the efficient components often present on affordable devices paired with a big battery can ensure a very long battery life so that you can even forget your charger at home for at least two days.
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https://www.gizmochina.com/2019/11/11/oppo-a9-2020-vs-realme-5-vs-samsung-galaxy-m30s-specs-comparison/