As we all know, Apple features 128Gb as their max storage option. Right now 128GB is super hard to fill up, at least for me it is. Unless your shooting 4K video for a while, or your somebody like me who always forget to delete apps. I think that 256GB could be possible and here’s why.
Theres been a BUNCH of rumors from various sites, that Apple will be announcing the iPhone 7 Plus with 256GB. I do think Apple would do something like this. Why? Well, since they released 4K video recording on the iPhone 6S it would allow more film makers or other people to record longer amount of 4K video.
Please keep in mind that is a rumor. Which means that it could possibly happen. I do believe that this could happen though. At least with in the next two iPhone launches.