can you just give up on the 2gb ram already? It is not happening and it will not happen for a while. iPhone doesn't need that amount of ram. Maybe optimization but not more.
iPad on the otherhand is another story.
The first 2GB we might see will be with iPhone 7 at the earliest. Ram draws more power even when idle which translates to reduced battery life. So please, enough with it already. In fact, if iOS gets more and more optimised then we may not see 2GB ram for a longer period of time. It is not needed except safari tab reloading which can be optimised and solved by the software.