Here is my review as posted on Amazon:
This is one of the best docks out there for the Samsung Galaxy S4. That said, it is not perfect and the flaws outweigh the benefits. While it holds the phone extremely well the issues are with the cabling.
The short cable running from the dock to the phone is too stiff and puts a lot of stress on the micro USB port on the phone. You cannot use the clip built into the mount that supports this cable because this stresses the port even more. You cannot move the phone in such a way as to give the cable more slack because then the mount would be pressing the power and/or volume buttons on the phone. I cannot say for sure that this will damage the micro USB port, it's just my opinion.
As a result of not being able to clip the short cable to the mount the short cable wants to work its way loose from the mount.
The charge/audio cable is 9ft long. At this length it prevents the phone from charging at what I consider a reasonable rate. This is shown in some tests below.
Samsung OEM 2A USB wall adapter through iBolt long and short cables: 1100 milliamps
Samsung OEM 2A USB wall adapter through iBolt long cable only: 1340 milliamps
Samsung OEM 2A USB wall adapter through OEM Samsung cable and iBolt Short cable: 1700 milliamps
Samsung OEM 2A USB wall adapter through OEM Samsung cable: 1900 milliamps
2A Car adapter through iBolt long and short cables: 820 milliamps
2A Car adapter through iBolt long cable only: 960 milliamps
2A Car adapter through OEM Samsung cable and iBolt Short cable: 1420 milliamps
2A Car adapter through OEM Samsung cable: 1900 milliamps
I need to be able to get in my car, use my phone for navigation and also be charging the phone. I have found a charge rate of 1000 milliamps to be approximately break-even when it comes to battery usage while driving with navigation. (The phone will not lose battery charge, but also will not gain) Based on the above, I will break even at best.
As far as the mount itself goes, it is fairly robust and the ball mount does not slip. The ball is rubber coated which is a nice touch. The mount is very large and clunky because of the clamping mechanism. The bottom adjustable feet slide out to accommodate thicker devices. They lock to prevent them from closing back up but there is nothing to prevent them from opening up to their maximum size. The locks on mine did not work well and one side would not stay locked. Their wedge shape pretty much guarantees they will end up at their maximum thickness setting at some point.
High quality suction cup
Good tension in ball mount
Somewhat standard ball mount can be adapted (17mm Garmin Ball)
Fits Phones with case installed
Cables work with most cases without trimming
Triggers Samsung dock mode
Triggers Samsung external audio
Very slick design on short adapter cable as it keys into the mount and allows flipping to the other side.
Large and clunky
Short cable running from mount to phone puts too much stress on the micro USB port
Long cable uses too small of a wire gauge.
In short, this mount has many positives and if it will meet your needs for charging, audio playback, and mounting I would still recommend buying it.
Between the price and the charging rate, this is not the mount for me. A premium price demands the highest quality and this product is not there.