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Yes, there's a charge protection circuit in the phone. However, it is recommended that you use the standard charger, long-term use of excessive current charging, the phone and battery life is not good. Charging with a small current will extend the charging time.
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No, Huawei brand charger is not universal with Samsung, Samsung's fast charge function is required to go through the official pd fast charge agreement to achieve fast charge, if the use of Huawei charger can only achieve 5 volts 2 amps charging speed. Therefore, to choose a Samsung mobile phone, you must choose the original charger or a brand charger certified by Samsung.
Can not, because the charging voltage power is different, you have to replace the corresponding charger to use, otherwise the charger contact is poor, replace the charger voltage is unstable, through the solution
Under normal circumstances, it is not possible, the voltage of Huawei mobile phone fast charge and Samsung mobile phone is different. If the voltage difference between the two mobile phones is large, it will even break the Samsung mobile phone.