Task Management +1
3.0K 0 3
Productivity +2
10.4K 2 2
Task Management
2.1K 0 1
3.6K 0 1
Personal +1
2.0K 0 1
Productivity +3 Pro
128.9K 0 1
2.7K 0 0
SMS was the most widely used data application, with an estimated 3.5 billion active users, or about 80% of all mobile phone subscribers at the end of 2010.