I scheduled an appointment with the Apple Support App and was handled very friendly. The change of the Battery would have taken more than the day but if I was willing to pay an extra 10 € Express Charge I would get it done in about 2 hours. I did.
After 2 hours it was ready and to my surprise I was only charged the 30 € for the change itself. Why? I don't know. But I was happy. Thanks!
I can also say that the iPhone 6 runs smother now with the new Battery even though the brakes were disabled...but who cares?
Batteries are getting old and need to be changed when their time comes, I have learned that now and will be more attentive to my phone. read more