Low temperature does affect the charging speed of mobile phones, low temperature can not be powered on generally there are two cases, one is the low temperature battery failure, the other is the mobile phone automatically stop charging. There are many brands in the hand in the case of too low temperature will automatically power off, such as Apple, Samsung, HTC and other mobile phones, according to Apple official introduction, this is to protect the mobile phone battery and set a low temperature power mechanism. So this should be a normal phenomenon.
The charging speed of the phone depends on the charging environment. And the capacity of the battery. If the temperature is too low, beyond the theoretical value of battery charging, it may affect the charging speed.