I have a Samsung Galaxy S2 and charge it from an external USB battery. Some cables work while some don't so I think I know what you are talking about.
I had to make up a cable to fit my (excellent) waterproof SGS2 case. Pins 1 and 4 are connected, pins 2 and 3 (data) are disconnected. The cable works fine.
Does that help?
I had to make up a cable to fit my (excellent) waterproof SGS2 case. Pins 1 and 4 are connected, pins 2 and 3 (data) are disconnected. The cable works fine.
Does that help?