Hi Kareem,

first you can try cleaning your charging port on your phone with a wooden toothpick (don't use anything metal as you will damage internal contacts). It solves the issue in 99% of cases.

if it doesn't help, check with these guys: https://www.maclinic.ch/

cheers,

k.

Thanks Kirill, I'll try that!

Question: have you already change the battery?
I had changed mine 2 years back due to the updates, iphone 6 and iphone 6 plus were running low fast (but you were probably already aware of this?)

There is a guy in Divonne Vlad Alex and someone else in Prevessin who I think works at the cash/sell shop at the round about by Gamm Vert. I believe they do better prices and read lots of good reviews about these two people.

Hi, I haven't changed the battery, but I think I should do that. 

@Kirill was right, the dust in the chargin port kept it from charging normally. But even when the port was cleaned, the battery dies super fast, so I need to replace it. In fact, I was not aware that these updates were a factor, thanks for the heads up!

Thanks as well for the recommends, do you remember the name of the shops by any chance?

Type Vladalex on facebook, he should come i think. I think he is basedin Divonne.
When you change the battery, ask for an Apple one and not a copy! they are cheaper but I had a problem once I had changed with a non original Apple screen for example. 
The other one is based in Prévessin, I think it is called "cash converter" by the roundabout.
I think a new Apple battery in the shop costs like 60e or CHF?

Okay great, will check them out, thank you.