There isn't a need for any improvement in Android SDK since they provide users with two or three updates in a year, making it quite stable. The security part in Android SDK depends on how you build an application using the tool so you can apply some security to your application. The reason why Temenos Quantum is the best security tool is because it uses a middleware named Fabric, so the APIs are connected from Fabric to Temenos Quantum. The middleware offered by Temenos is really strong. If I compare the security offered by Android to that of Temenos Quantum, Android will lose in terms of security. You can create a secure application with Android SDK. The amount of security offered by Android SDK is less when compared to Temenos, making it an area of concern where improvement can be made. I don't think Android SDK needs to add any features because they give updates frequently.
