The battery in my wife’s iPhone 6 was not lasting as long as it did in the beginning, such is the wY of all batteries. We were going to replace it long before the cry babies in the media created “battery-gate.” People have had mobile day Hines for decades now. Batteries have not changed in function or in basic design. The more you recharge/use it, the shorter the daily life span will be. Ordered the battery kit for my phone. Sat down with it, and about 20 min. Later I was done. If you can’t work a screwdriver, then you should pay somebody to do it for you.
The repair could not have gone any easier.
Lay every thing out in a towel/ soft work surface. Read all the directions before taking things apart. Lastly, just be calm, and patient.