I'm really curious about the sound difference that people have noticed when playing music or a game with the phone in the case. I just got my Exolife yesterday but I'm thinking about sending it back unopened and getting the Mophie. Has anyone found a good comparison of the 2? Youtube only seems to have mophie vs mili comparisons..
Just did a quick comparison of sound with the Mophie on vs. off while talking with my wife for a couple of minutes.
FWIW, testing the mike.....I took the case on and off twice during the conversation, and both times she said it sounds 'louder & better' with the Mophie JPA on the iPhone 4. She said it's 'sounds distant' when I take the case off. Always holding the iPhone the same....up to my ear while we were comparing. She is using a 3Gs.
Testing the speaker.....with the iPhone 4 in speaker mode & listening to a long voicemail, and taking the case on/off while the voicemail is playing....it sounds like there is a 'bass bump' or 'treble reduction' with the case ON. Very slight difference. Not a concern for me.
I just looked up Mophie's return policy on their website. They do appear to have a 30-day 100% satisfaction guarantee, so you can send it back if something isn't working sound wise for you....