Iphone doesn't charge properly! Clean the charging port!

Stuff (dust) could go into the phone charer port. This may prevent the charger from fitting properly in the charger port. All you need are:
1) A good light spot that helps seeing inside the charger port
2) A small and thin stick (e.g.thoothpick) !! Avoid metal sticks !!
3) cleaning liquied (I didn't need one!)

And gently clean/pick whatever stuck in the inside of the phone charger port.

Note! Becareful not to damage the charger port.