iPhone 6 Battery Replacement Program

I believe the pros/cons this person is referring to, they are asking for: what are the pros/ cons with respect to this battery swap program? Is it worth it? What issues have been reported with these “new” batteries, the service having them installed, etc?

There isn't much to say in regards to pros and cons about improving your phones performance through getting a new battery for your device. The pros are you will have a longer lasting battery. The cons are you will not have $29 when you leave the apple store?

Hope this helps

I don't know what you mean by "pros/cons"? If your battery needs to be replaced it will be replaced, sooner or later depending on availability.