As far as I can tell the 6S has never been released through official channels in Indonesia, and the 7 has only recently been released (still pre-order?) in small numbers. Certainly some have made it in from neighboring countries, but I've never seen a 6S at an official retailer and even ibox.co.id skips that generation, listing the 5S, 6, and 7.
Hmm, maybe it's so new they haven't fully updated their website.
Regardless, my point is that the OP is selling a phone that could easily be 2+ years old, or may only be 3 months old (and at the time the "newest model", so he may not realize). The difference is likely significant for someone considering an asking price of 7.5jt, so he should include that information if he wants to make a sale.
I bought this phone second hand only 2 weeks ago just to use to play movies in my car...BUT it is to new and not compatible with my headunit. I am an android user and hate iphones. I just want to get my money back and buy a new andriod. Condition is still very good no dents or scratches.
Thanks for the info jstar...I did post it on that fb page and a few others. Now that the note 8 is going to come out Im going to wait for that. Its a beast 6gb ram 128 or 256 gb rom (rumoured). Cant wait!