Samsung has had a lot of sales success with the first Galaxy S smartphone and it released one of the first Android-based tablets with the first seven inch version of the Galaxy Tab. Unfortunately, people who own both products are going to have to be satisfied with the Android OS version they have installed on those devices
According to a post on Samsung's Korean web site, and later translated by The Verge, the Galaxy S and the Galaxy Tab simply don't have enough RAM and ROM in their hardware to accommodate the Android 4.0 update. The reason is that both have a lot of software programs that are already installed in the RAM and ROM memory, including things like the TouchWiz software, specific wireless carrier services, video calling software and more.
This is obviously a big disappointment for owners of both products but sometimes you role the dice and take your chances when purchasing a smartphone or tablet hoping that someday there will be a big software upgrade. In these two cases, there won't be any "Ice Cream Sandwich" treat for these "older" Samsung Android products.