Let's Assume that You have gone out as an urgen, you do not have a charger .. what will you do as a general ?
Most of us use our friends chargers without knowing model of their charger.
Do not do this under any circumstances. The reason is that each phone charger has individual specifications. The battery circuitry on your phone also varies with how much the voltage can consume as input.
Note that the input and output voltage specifications that are printed on both of them take you to any two phone chargers that are visible to you.
Charging your phone with a different phone charger will increase the risk of phone exploding. Sometimes you do not get to know that the phone is in danger of damaging the battery that is non-removable inside the phone. Also, the phone battery backup also falls significantly. If you are using a Samsung phone, it is not correct to use a different model charger of the same company.
Do not ever use low-cost scarcity chargers. Use your phone charger only.