Are these validated to be secure, in this way, or are you just asserting that they are? Bear in mind that many intentional features of Android would considered by Apple to be severe user privacy violations. There platforms aren't just different technically, their standards for what security is considered to be vary significantly. That's fine because if you want those features in Android, then Android has them, but if you prefer a garden with a higher wall, there's iOS.
- Epoch OS
- Symbian
- Windows CE/Pocket PC
- Windows Phone 7/8
- Android
- Blackberry
- Bada
The above vendors do have/had secure deployments mechanisms despite support for dynamic libraries.