Help with a mobile external sd card reader!!!

[ncrye1]

i have purchased an external sd card reader and my phone will not recgonize it when i plug it into my phones charging port. i bought it to look at pictures my trail camera has taken while im out hunting. it would be so handy to just plug the card reader into my phone while im in the woods so i can flip through the pics without having to actually take the sd card back to my house and plug it into my computer. when i plug the reader into my gf's phone (galaxy s3) it works just fine, but it wont work on mine or any of my friends. i have an lg spectrum and another ive tried was a samsung charge. i dont know if its a setting on my phone that is different from her s3 or if the lg os just wont support the reader. any information would be greately appreciated because this would be a very convenient little gadget to have out in the field. thanks guys!!!

 

[cole2kb]

Your GF's phone supports a standard called "USB On The Go" or simply OTG which allows it to read external USB devices such as hard drives, thumb drives, card readers, and mice / keyboard. The other two devices listed do not support this, so you won't be able to plug in any USB devices to them.