The 100 Best iPhone Apps

Onavo Extend
The free app Onavo Extend compresses data automatically to help you reduce data usage on your phone. In other words, it will save you money if you typically exceed your mobile service plan's data allotment. Additionally, anyone traveling abroad with an iPhone should absolutely have Onavo installed. Learn the settings well, but be forewarned that there's no compression for streaming video. Onavo is also not supported on Verizon accounts with iPhone 4.
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