MobiPerf is a useful tool to score your 3G network that runs on iPhone and Android. It takes 2 - 4 minutes to complete.
Using MobiPerf, you will have a good knowledge of your smartphone's 3G network properties, such as local / global / gateway IP addresses, upload / download bandwidth (kbps), signal strength, DNS lookup latency (ms), PING latencies (ms), TCP connection establishment latencies (ms), HTTP benchmark downloading latencies (ms), and much more.
You can also easily diagnose any network problems, even some hidden traffic policies imposed by your cellular carriers. For example, you can test whether BitTorrrent traffic is blocked by your ISP. You can also test whether FTP, SSH, POP, SMTP, HTTPS ports are blocked by your ISP or not.
All the results are refreshed each time you run our tool, so we encourage you to run it at different time and different locations, in this way, you can compare the scores of your 3G network at different times of day and at different locations.
More info about Mobiperf can be found here, information on our related work to determine security-relevant behavior of popular smartphone applications can be found here, and our repository on mobile data can be found here.