I have been wanting this for a while and I still can't figure out why no one has released one. In my mind, my cell phone (or tablet) should be an all in one de

I have been wanting this for a while and I still can't figure out why no one has released one. In my mind, my cell phone (or tablet) should be an all in one device - which to a large degree is becoming the case. I hated having a stand alone MP3 player, GPS receiver and camera. Now that e-readers (and wannabe e-readers - kindle fire, ipad, etc.) are becoming mainstream, I don't want my next phone (first tablet) to be without a low power screen. I am a bit disappointed in the average consumer though - it seems like they have a hard time understanding the advantages of e-ink screens or they are ok with reading on an ipad/kindle fire as it can do more than a basic e-reader. If executed well, it could be a major product enhancement and give a mobile device make an edge for a while, esp. considering it would be cheap to add - the screen and the minimal amount of hardware to interface that with the rest of the phone.