I am trying the Lite version of Juicebox, and found I couldn't see my Gallery when using an iPhone over 4G (3G or 2G), but it works fine over WiFi.
I then went to the Demo page and found the same is true for the Embedded Demo.
The Gallery just shows a white background where it should be.

If using the Full Browser it works fine over 4G.

I get the same effect (just white for the Gallery) in both Safari & Chrome.

I couldn't see how to include a jpeg image here, but happy to do so if someone tells me how to.

As the Demo Embedded Lite page shows the fault I presume there is no need to reference any code.

Is this an iPhone, 4G / Mobile or Embedded Lite known issue.
Actually just tried the Pro Flat Design Demo, and it has the same issue.