| Family | iOS |
| Name | iOS 4 |
| Company | Apple Inc.  |
| Other OS of the same producer | audioOS, iOS, iOS 10, iOS 11, iOS 12, iOS 13, iOS 5, iOS 6, iOS 7, iOS 8, iOS 9, iPadOS, iPhone OS 2, iPhone OS 3, Mac OS, macOS 10.12 Sierra, macOS 10.13 High Sierra, macOS 10.14 Mojave, macOS 10.15 Catalina, OS X, OS X 10.10 Yosemite, OS X 10.11 El Capitan, OS X 10.2 Jaguar, OS X 10.3 Panther, OS X 10.4 Tiger, OS X 10.5 Leopard, OS X 10.6 Snow Leopard, OS X 10.7 Lion, OS X 10.8 Mountain Lion, OS X 10.9 Mavericks, tvOS, watchOS |
| Client of the same producer | Apple Mail, Apple News, Apple-PubSub, CFNetwork, CoreMedia, Cyberdog, iTunes, QuickTime, Safari, Safari mobile, Safari RSS reader |
| Robots of the same producer | Applebot |
| OS homepage | https://en.wikipedia.org/wiki/IOS_4 |
| Preceded by | iPhone OS 3 |
| Succeeded by | iOS 5 |
| Description | iOS (previously iPhone OS) is a mobile operating system developed and marketed by Apple Inc. Released June 21, 2010. |
| Thumbnails
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Useragentstring example:
Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_0 like Mac OS X; en-us) AppleWebKit/532.9 (KHTML, like Gecko) Version/4.0.5 Mobile/8A293 Safari/6531.22.7
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iOS 4
