The Apple iPhone 6s Plus features a 5.5-inch IPS display. It is the successor to the iPhone 6, being the first model to introduce 3D Touch. The 6s is avaialble in Gold, Silver, Space Grey and Rose Gold. It was initially released in 16GB, 64GB and 128GB models but is now available as a 32GB model. The 6s has a Li-Ion 1715 mAh non removeable battery. The 6s Plus was introduced alongside the iPhone 6s.