Complex sentence: The iPhone 5S maintains almost the same external design to its predecessor, the iPhone 5, although iPhone 5S received a new white/gold color scheme in addition to white/silver and gray/black.
Split into simpler sentences: The iPhone 5S maintains almost the same design to its predecessor, the iPhone 5. Unlike previous models, the iPhone 5S shipped in a white/gold color scheme in addition to white/silver and gray/black.