Less than a week after experiencing a significant improvement in shipping times for new online orders throughout the world, the iPhone 5s has seen its availability improve once again with models now shipping "within 24 hours" in nearly all of Apple's online stores for countries around the world. The GSM-compatible SIM-free iPhone has also improved to a shipping estimate of 3-5 business days. Following the launch of the iPhone 5s, supplies were significantly constrained, especially for silver and gold models. Shipping estimates slipped to 7 to 10 days
