The official Samsung service returned the phone from diagnostics without finding any defects (order 50807 dated 02/14/2022). The support hotline does not recognize the above problem, referring to the Instructions for Safe Use, which indicates the operating temperature range from 0 to +35 degrees. Therefore, keep in mind that at below +5 and above +18 you are guaranteed to risk being left without communication / navigation - checked and very unpleasant. Forums are full of the problem of this model, but the manufacturer ignores it.