Weigh some things you know the exact weight of like 1L of water or your phone (you can google most phones weights, without the case and only if you dont have a screen protector of course).
I had the same issue at home but realized my scale was jus off most of the time.
Weigh some things you know the exact weight of like 1L of water or your phone (you can google most phones weights, without the case and only if you dont have a screen protector of course). I had the same issue at home but realized my scale was jus off most of the time.