Difference Between Android 2.1 and 2.2

Summary:

1. Android 2.2 has more speed and performance optimizations

2. Android 2.2 has USB tethering and Wi-Fi hotspot functionality not found in 2.1

3. Android 2.2 allows for app installation to the memory card while 2.1 does not

4. Android 2.2 adds Flash 10.1 support absent in 2.1

5. Android 2.2 has a lot of modified and added APIs

6. Android 2.2 improves support for Microsoft Exchange over 2.1


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