OPPO A57 (Glowing Black, 64 GB) (4 GB RAM). Its 5000 mAh monstrous battery with 33 W SUPERVOOC charging, powers up your phone in a jiffy and enhances your productivity. Moreover, with expandable internal storage of up to 1 TB and boasting a RAM Expansion technology that adds up an extra 4 GB of RAM, this phone can multitask with ease and boost your performance.
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