The unit that was sent to me does not power on. I searched on the Internet and a lot of other people have the same issue. It seems there is a problem with the batteries on these units.... They are supposed to last for a long time, but mine did not even power on once. It would be nice for the end user to be able to take the battery out and replace it; I am going to have to send mine back, even though I had to wait a while to get this one and was looking forward to use it, play with it, test it. Ok, so I sent this one back and got the money back, but not the cost to send it back to seller. I bought a second one from another seller. This one powered on, but had other serious issue with it. I tried to insert a micro SD card, but the casing for the card reader was misaligned and my card fell in the device itself. As this could have been labeled as my fault, that I did not pay enough attention to the casing, I did not try to send it back. Plus, I had to take my card out from inside the device somehow. I decided to open the device and forget about warranty to be able to get the card out. I tried to align the casing of the card reader, but instead I managed to break it entirely. The small metal plates broke in one spot and I decided to peel it off completely. I was able to finally put the cover back on the whole device, but without damaging some places of the plastic cover. I figured that 2GB of internal memory would be enough and I would be loading books on it through the USB connector, by connecting to a computer. But it turns out it does not have 2GB available internally to put books on. It only has 250 MB, like other reviewers have mentioned. I do not know if I can root the device without a card reader to put a card in. Have not tried to root it yet, but I read on the internet that it is possible. That would be the obvious solution to many of its software limitations. I went ahead and bought a third device because I really want a book reader with an E-Ink screen that has a card reader and that one seems fine, but I did not played with it much.