I know the Mophie Air for iPhone 4 / 4S a friend.
The helium is built significantly slimmer and fit for my opinion
according to the new 5 Series! whether 1500 or 2000 mA / h is then also almost does not matter.
It holds out the whole day. For GPS games (Geocaching)
or time 3D player is also of 2000mA / h battery never suffice.
Importantly, the part is fully charged in 1.5-2 h.
It sits like glued, and nothing wobbles, buttons easily accessible.
Where light as shadows?
Yes, 2 things bother ... not really ...
A) Micro USB (I hate that EURO Scrap plug) has only charging function.
Data or audio traffic is no longer about instead. Solution: WiFi Sync.
Can be stupid in the car, Navi only Laden no more announcement!
B) headphones do not fit really, only a few models will be narrow enough.
Solution: Small Verlägerungs cable is supplied with the Mophie.
The best way on the headphones, otherwise forget quickly.
I give a buy recommendation, and wait long-term use.
Small update an asterisk will be lost!
After a short useful life, I must now determine unfortunately
that the high-quality plastic that feels so good has a downside.
He peels himself! The outer layer peels at edges first.
It looks natural from no longer beautiful.
In addition, it can happen that the charger involuntarily lose contact,
you then pushes iPhone upwards, or overhead in your pocket.
That part is not so very accurately.
In total, however, the part I still like.
Greetings from Bad W.
Ingo