1. Windows 7 Mobile
1.1. Pros:
1.1.1. 1
1.1.1.1. Microsoft produces an excellent productivity suite in the form of Microsoft Office.
1.1.2. 2
1.1.2.1. the device still enjoys wider support than the iPhone when it comes to choosing a carrier.
1.2. Cons:
1.2.1. 1
1.2.1.1. Windows Phone 7 doesn’t support the full range of Exchange ActiveSync policies.
1.2.2. 2
1.2.2.1. No on-device encryption.
2. Android
2.1. Pros:
2.1.1. 1
2.1.1.1. Benefits of having a 4G phone
2.1.2. 2
2.1.2.1. The speed, syncing, and streaming
2.2. Cons:
2.2.1. 1
2.2.1.1. New imperfect chips, battery life will take an appreciable hit. node
2.2.2. 2
2.2.2.1. heavier than it should be.
2.3. Ice Cream Sandwich
3. iOS/ iPhone
3.1. Pros:
3.1.1. 1
3.1.1.1. It's high resolution screen
3.1.2. 2
3.1.2.1. Improvements made to the front facing camera
3.2. Cons:
3.2.1. 1
3.2.1.1. Low battery life
3.2.2. 2
3.2.2.1. antenna and the problems caused by holding the phone.