Productivity +3
3.5K 2 4
Personal +1
7.1K 1 2
Finance
2.5K 0 2
2.8K 0 0
Personal +4
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.