Good day! There is a problem with my XPERIA XZ3 6gb (H9493) phone. The phone often hangs on leaving the sleep for a few minutes. After opening the cover of the case, it doesn’t react to either the side button or the fingerprint scanner for quite a while (even there is no vibration), the screen also does not turn on. The phone starts to respond to all presses and the screen lights up in just a few minutes. The problem manifests itself often, and I see no apparent reason. Previously, a reset to the factory settings a month ago helped, but alas, the problem resumed and there is no desire to make another reset, at least on the same firmware. Any thoughts on how to cure? The firmware is installed the oldest of the XZ3 model range (52.0.A.1.220), there are no official updates for my model (H9493), delivery for the Russian market, purchased from Sony Center.
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