mophie - juice pack air Charging Case for Apple® iPhone® 4 and 4S - Black/Silver

The mophie juice pack for iPhone 5 works well and delivered the performance expected. Super simple to install and use, this accessory has extended the phone life of my wife's iPhone 5s allowing her to use her phone, without having to plug in, for an extended time, over 6 hours. As a professor she is constantly on the go ... classes, conferences, etc and this accessory is proving to be invaluable.

I am always on the go and my phone is used a lot to for general business & interacting with customers online. Also, thanks to the Square card reader; my phone is also my cash register so I don't need to be worried about my battery going dead! Mophie helps to make sure I can get it done without worrying about getting my phone to a charger so often. * When it comes time to charge I prefer charging my case and phone separately rather than together because in my experience the Mophie seems to get a longer battery life that way. * This case also provides very good protection for my phone against being dropped or banged around. The only sacrifice that you make with this product is that it is big and heavy. It is cool looking though.

Bought this for my daughter so she could keep her iPhone 4S charged. Unit works great and will recharge to about 100% when the battery is nearly fully drained. Only gave 3-stars because the silver strip that goes around the case detaches all the time and you need to snap the pieces back into place.

Since most of our family has an IPhone 4-S, we needed a backup charger for those times when a regular charger is not convenient. This made perfect sense for an upcoming Disney Vacation. The charging case looks like a regular case, is protective yet stylish. A small switch activates the charging feature. It charges the phone quickly. Much more convenient than carrying a seperate battery and the adapter cord! Had it for several months now and happy with purchase. Only drawback is it takes several hour to recharge the case and has a limited number of charges in the battery life, so this is strictly used to recharge my phone when I have no other charging options.

I had a battery extender power pack UNU DX-04-1700 that was wearing out, too many drops. The battery charge on the phone doesn't seem to last a day. Going to sporting events always drains the battery. Read reviews and the Morphie got the best reviews. Naturally it was the most expensive. Decided to purchase this because it was discounted- who has an iPhone 4s? Also had a best buy gift card and my husband can use it....HE has an iPhone 4s. This battery pack doesn't last as long as the previous, it's not as sturdy - there are already "drop" marks. Just being in my purse, it gets scratch marks. Not sure it's worth the extra $ just because the reviews say it's the best. This recharge will only charge the phone once before it needs to be put on the charger. The UNU seemed to last longer. I do like the button that let's you decide when to start the recharge.

Relatively compact and light. Easy to use and effective. Doubles the power life of the phone.

It is very useful does what it suppose to do . Charging it is a breeze still fits the same charger . It comes in great colors.. Not to bulky . A little heavy.. It still fits in my carrier case that I purchased through Amazonia.

so far the case has worked as advertised and I get almost double the charge time. I dropped it once and it got scratched on the corner but it protected the phone from damage. I would recommend it