AA battery USB Portable charger flicker-charges?

So I made a Portable USB Charger using this diagram:

When I soldered everything correctly (I double, triple, and quadruple checked it), I tested it out on my iPhone. When I flicked on the battery, it didn't seem to work.

Then I tried on my Android device (HTC One S on T-Mobile), and the LED orange light turned on and off.
I checked in the settings, and it would change from "Charging (USB)" to "Not charging"

It would do that very quickly repeatedly. I'm not sure if my device is charging or not.

How do I fix this?

Added (1). Oh, and also, I'm using 4 AA batteries and a 7805 5v Voltage Regulator, if that's important to your diagnosis.

4 AA batteries adding up is 6V.
7805 does not work on 6V, It needs at least 8V.
The silly circuit that you made has big mistake on switch connection. It shall not turn OFF.
What a fool drawn such silly circuit.

YOU DO NOT NEED TO BUILD THIS SILLY REGULATOR CIRCUIT IF YOU USE FOUR AA RECHARGEABLE CELLS. IT BECOMES EXACTLY 5V. WIRE IT DIRECTLY TO THE USB PORT.

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