Question: how to replace iphone 6 battery step by step?
Answer: Step 1: Step 1 - Opening Up the IPhone 6. ... 
Step 2: Step 2 - Disconnecting the Battery. ... 
Step 3: Step 3 - Removing the Front Assembly (& Organizing the Screws) ... 
Step 4: Step 4 - Removing the Battery. ... 
Step 5: Step 5 - Connect the Front Assembly and the Battery. ... 
Step 6: Step 6 - Put the Front Assembly Back in Place.