Reviews for Mophie Juice Pack Air for iPhone 4S

Ihave owned several Mophie Juice Packs and have had quality problems with everyone. The last worked great for about 8 months then wouldn't charge my phone. For this reason I don't recommend this product.

As with most other users I loved Juice Pack Air's extended battery life as I'm always on the go, but one day the mini USB port at the bottom of the battery pack couldn't hold the cable, and having to sort of pushing the cable into that plug with my one hand in order to charge and typing this with my other really annoys me.

For my first test I drained my iphone4 to 0% and began charging it with a "fully" charged juice pack (I charged the juice pack for about 4 hours after I took it out of the box and while it charged my phone I didnt perform any functions on my phone. I just kept the screen black but in standby). On the first attempt my phone charged to 68%. On my second attempt I charged the juice pack over night and repeated the same test. This time my phone charged to exactly 80%. Perhaps giving the juice pack a full overnight charge accounted for the difference. I have not tested the juice pack for my own daily use yet so I cant comment on its performance in that regard. Daily use will obviously vary from person to person and how they use their phone. Personally the 80% charge seems satisfactory to me.

Unfortunately, this nifty device fits too tight on my brand new iPhone 4GS. It was extremely difficult to get the phone out of it, so much so that it seemed as if I were about to scratch or break my phone.
I wish it weren't so as it does look and feel great (hence the two stars). But it should be easier to use.

I had the Mophie Juice Pack Air for my iPod Touch. I immediately went to get the Mophie for my iPhone 4. I absolutely love the look and feel of this case!

I was expecting for the case to give the phone a full charge. To be honest, I was a bit disappointed that I wasn't getting a full charge. Then, I realized if I turned the case on around 30%, I would get an almost full charge.

In conclusion, I really, REALLY like this case. It is by far the best looking charging case for the iPhone 4 out there. It's way past the competition in terms of aesthetics and functionality.

You Would Think After Years of Problems They Would Improve the USB Port. I've read many reviews going back years and always the same issue with the USB. Mophie has replaced 4 for me so far. I take good care of my things and this case is no exception. I like the look and feel of the case and battery is great but I'm tired of having to ship mine back every 6-8 months for a replacement. Also, my first replacement they sent me back a used one, not even in original packing. Had to ship that one back too for a NEW case, only to have the same issue with the USB. I'm going to try a different, cheaper brand and see how I do!

It worked well in the first few months. It definitely adds battery life. The case protects the phone from drops but sacrifices itself in doing so. It literally comes apart at the seams after a small drop. I have extended its life about 6 weeks with superglue but now it has come totally apart. It lasted about 5 months. Wouldn't recommend.

The power cord won't maintain a connection, I have to reseat the charger 10-15 times just to get the thing half-charged. In addition, the micro usb plug falls out unless the charger is 100% still - that means you can't charge it in the car, you can't charge it connected to your laptop, and you can't even WALK near it because the disturbance in the air will disconnect the charger from the power source. Also, no talking near this charger whilst it is plugged into the wall, as the vibrations in your voice will disturb the delicate usb port and disconnect the charger from the power source.

This useless piece of garbage makes me so angry. Why can't these people put a little bit of effort into quality control?

The soft touch material on this battery pack is very nice but that's the only good thing! My unit, like several other reviewers, failed within 2 weeks. This is got to be the most unreliable piece of accessory I have ever owned. The MicroUSB charging port became loose that I have to wiggle and jiggle to get connectivity, but as soon as I flex the charging cable a bit, I would lose connection again. This happens with the provided MicroUSB charging cable and other MicroUSB cable I have.

Separately, I have also seen situations where it appears the battery pack is charging the iPhone and stops and starts again. This would happen repeatedly, to a point my iPhone display a message about the charger not be compliant and then shuts off the charging process.

I am very disappointed how poor the quality of this product is, considering the high price compared to other battery packs.