Review: Amigo Case by Keystone for iPhone4

Posted by at 8:05 am on June 14, 2011

Keystone ECO AmigoCase is a rechargeable battery pack with built-in clip that comes with a separate protective cover for iPhone 4. It is designed to provide additonal protection to your iPhone 4 and extend its battery life. When your iPhone is in the AmigoCase, the screen of your iPhone is completely protected, It faces inward towards the battery pack, with the rear camera facing out.

Giving You The Hard Shell

The manufacturer says “Bring it with you all the time by clipping the AmigoCase to your belt, or on the inside or outside of your bag” that’s the truth because with this two piece rig, you iPhone won’t fit in a typical pants pocket. To install the Amigocase you first put the phone into a semi-transparent coloered shell. THis shell has openings on the back for the back camera and Apple logo, There are openings around the edge for volume controls, the lock button, headphone jack, power button and at the bottom for the speakers and power input.

To insert the phone into the battery/charger you tip the front part of it to one side, slip the phone in and tip it back. Then you are powered and ready to go. The battery part of the case have several metal fittings and the slide action is smooth without feeling loose. The clip is large enough to go around the straps of a bag or backpack, but also feels strong. You can use the clip to hang the phone from your, pocket edge or bag strap.  One deisgn flaw, the clip does not rotate and is not removeable.  We’d like to have both of those options with it.

There is a microUSB port on the side to charge the unit with a cable, On the bottom you’ll find a button that activates the four LED battery status indicator, while a button on the side turns the battery charging feature on and off.

The battery on the case gave our iPhone 4 a full charge.  When empty the battery took about 3 hours to fully recharge.  The extra power comes in handy when you aren’t going to be able to your phone in.

Wrap Up

Overall the Amigo Case is a great product.  The battery is great, with reasonable charge times and performance.  The construction is rugged and gives your iPhone multiple layers of protection. There are a few small design issues we would like to see addressed, like the fact that the inner case can be a bit difficult to remove, and that the non-rotating design of the clip limits the ways you can hang it off yourself or your bag, but nothing that would keep us from recommending it to you.

Rating 4


Tough and well constructed

Holds phone securely

Extra battery/charger is well intergrated


Large size, phone does not fit in pocket

Clip does not rotate

Tech Spechs (provided by manufacturer)

Hi impact Polycarbonate Plastic

Input power
5.0V, 500mA DC standard micro USB via computer or wall adaptor

Talk time
7.5 additional hours beyond standard iPhone 4 battery

Internet use
5 additional hours beyond standard iPhone 4 battery

Video playback
6.25 additional hours beyond standard iPhone 4 battery

Audio playback
18.75 additional hours beyond standard iPhone 4 battery

Stand by time*
195 additional hours beyond standard iPhone 4 battery

Battery Capacity
5500 mWh

Battery Chemistry
Lithium polymer

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