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Samsung Galaxy S21 Ultra Battery Drain Bug Discovered! Possible Fixes and Battery Saving Tips | iTech Post
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Battery Life - Actually Great - The Samsung Galaxy S21 Ultra & S21 Review: The Near Perfect and The Different
Why does the Samsungs21 battery drop super fast? There are not much apps running in the background. - Quora
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Samsung replied] I noticed heavy battery drain on my Galaxy S21 FE after installing Android 13 - Sammy Fans
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