Don't use these memories instead use a advanced hdd which requires neg. amount of energy and can transfer at a future rate of almost 10 Gbps with a single platter having amount of heads as many of the applications present on the computer then u would not need to improve in it.

Thinkin about a common man. Building a high end phone and taking out new models everyday is really costly so why don't you find a way out where each and every hardware of the phone is present i.e., the P.C. or a laptop or a handheld so why don't you just slip a sim slot into it as they are also on the turning routes each and every day as it will save you cost of designing and connectivity and also a common has a very good option to buy this thing which has a lot more to give than a cell phone with limited features.