Hey guys, I am building my own battery operated cell phone charger. I am pretty sure I built my circuit correctly because the outputs I am reading on my USB output port: pin 1 is 5V and on pin 4 is 0V... which are good readings (and tells me that my voltage regulator is functioning properly and that my ground is connected properly). When I plug my 'micro USB' chord into my charger to charge my phone, nothing happens. Any ideas? I used two different DMMs to check the voltage on the pins in the USB port. Again I am reading 5V on pin 1 and 0V on pin 4. I have tried several different micro USB chords as well. For some reason, my cell phone will not charge off of this. I have two ideas as to what may be happening... 1. due to the way I hot glue gunned the USB port to the container my circuit is in, there glue may be insulating the voltage from entering my micro USB cable when I plug it in (or the glue is affecting this in some manner) 2. The last i checked this was not true, but just in case.... I am not using Pins 2 or 3 (the data pins on the USB) at all because to my knowledge, droids just need 5v on pin 1 and 0v on pin 4 to charge (as opposed to apple devices that requires a data signal in order to charge). Is this the same for droids now too? do you think I have to wire the data pins in? Any ideas will be a huge help. I am stumped.