Hi guys just to confirm, we have found that our rose gold iPhone 6S (64 GB) has Sansdisk TLC nand flash installed. It recently crashed and couldn't work out what was causing it. Did a a MLC and TLC Check we have the inferior TLC nand memory. Thought apple had fixed this issue with their new phones by just having MLC which is far better!! Shame on you Apple charging us loads of money for TLC tat!! Phone will now be sent back for a full refund! I urge you guys to check yours.