hi sir, actully, we have tested the hijack with ipad2, it works well( as the wiki of hijack). if the one in your hand did not work with ipad2, i think there may be something wrong in the audio connecting. you can try to look for a 4-pin Headset extension cord and try again . if it still not works with you ipad2 and you need a replacement, please sent me message.
thanks.