For iPhone 4S that Apple has put the RAM memory 512 MB and 1 GB on The add as a new iPad was released early in the year, which is a high possibility that Apple would put a 1 GB size memory for iPhone 5.
For the iPhone 4S, the Apple has put into memory and 512 MB RAM upgraded to 1 GB on The new iPad recently released early last year. It is highly possible that Apple will put 1 GB of memory, the iPhone 5 as well.
For iPhone 4S. Apple has put the memory RAM at 512 MB and adjust the increase 1 GB on The new iPad just placed in the early years. This is a high possibility that Apple should put the memory size 1 GB to iPhone 5.