Hello,
I have bought a Xaomi Mi4S recently. So far I found it useless. if I am lucky, I can make a phone call or receive a call. I have left uncharged a few times, so that the battery is completely empty. After that, I restart and it works fine for a few days. Then I get some messages in Chinese, so that does not help a lot... From then on, it becomes very slow, heats up and drains the battery. After a full load, overnight, the battery is empty in 4 to 6 hours, while in standby mode, not a single action performed on the phone. It looks like some APP is draining performance and battery.
I did run some app to check battery, removed several app's but the problem remains.
Can someone give me a hint on how to solve this?