Regarding the Capacity:
Every battery has been tested by Professional Tools before they out of our factory. Not by phone App or something else, it is Professional Detecting Tools.
Here are Tips to activate battery's full performance and service life:
- Use up all the battery power for the first time before charging, and ensure 3 to 5 complete charge and discharge cycles.
- Ensure the battery connector is completely touched with the phone connector, if not, the capacity you might see on your phone could be less than the actual capacity in battery. So, Press the connector a little hard to make them touched well.
We are Professional and Top. Don't hesitate to get this battery replacement for your iPhone 6.