I also have the G3, except I get excellent battery life, and I've been looking at getting the 6 or 6 Plus as well. I compared them in store, and the G3 was closer in size to the 6 than the 6 Plus. I'm curious how you will like the changeHad the G3 battery life was horrible for me. Ito my work phone and 7 hours top of I was lucky. I get my 6 plus tomorrow. I expect similar life to be close to my Note 3. I hope it's does so I can stop with keeping Mophie on them.