1-Reset network setting. 2-Go to Safe mode and check the issue persist because it may be due to some other APP's running in the background (usually third party apps) 3- Factory data reset. 4-Finally take the device to the Samsung service center. I tried the first 3 steps and guess what? The Galaxy M30s runs Android Pie with Samsung’s latest One UI 1.5 on top. The experience here is largely similar to what you find on other devices running the same software, including the M30 which received an update to Android Pie recently. The M30s comes with a Game Booster feature to improve the gaming experience on the device. 3D42.

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