Could be bad battery, issue with charger or issue with port, check those. The G4 came out in 2015, you got a brand new model? Even if new, if it was sitting for 3 years the battery could have died.
Could be bad battery, issue with charger or issue with port, check those. The G4 came out in 2015, you got a brand new model? Even if new, if it was sitting for 3 years the battery could have died.