Apple is about to release its already popular Apple Watch but some users who would like to purchase this wearable are also asking about iPhone 6S release date. No one knows how the company is planning to name its next smartphone. Rumors on the web mention both iPhone 6S and iPhone 7, and we have some information about this new model. The iDevice that should be unveiled in the fall of 2015 is believed to get some interesting changes. Still the source of this information is anonymous. Apple might present iPhone 6S SIM card similar to the SIM in iPad Air 2. If these iPhone 6S rumors are true, users will be able to purchase the smartphone with Apple SIM that is not locked to any carrier. You will finally get a chance to switch between mobile operators. Such idea is not appreciated by carriers, such as AT&T, Sprint and Verizon as they prefer keeping subscribers hooked to their network only with small chances to become SIM free. The iPhone 6S RAM is also believed to get some changes. The iOS giant might bump it up to 2GB instead of 1GB used in the iPhone line ever since 2012. What do you think about such possible changes in the smartphones that could happen as soon as in 2015? Getting a factory unlocked iPhone 6S with 2GB of RAM is surely a big plus, if these plans are to become real.