Apple iPhone runs on the user-friendly iOS operating system that Apple develops itself. You'll receive system and security updates for about 6 years after the launch of a new iPhone. That makes the Apple iPhone a sustainable choice. When purchasing one, consider which size iPhone you prefer. For example, you can easily operate an iPhone with a small screen size with one hand. In addition, it 's good to consider how much storage capacity you need. For the average user, 128GB is sufficient. You'll have enough space for your apps, photos, and videos. Do you want to buy an iPhone separately? All iPhone models on this page are SIM free. This means you can use your device with any provider.