Wife's Iphone 6 battery would show 100%, then die suddenly.

My Problem

Iphone 6 would show 100% battery then suddenly shut down.

My Fix

Repair was pretty straight forward. Did have a problem with the adhesive on the original battery breaking so I had to use the card and heat method to remove the old battery.

My Advice

Setup on a table where there is nothing to get in the way. Don't try to rush, make sure you put the screw in order as you take them out. I setup close to my computer so I could easily view the Ifixit tutorial.