Whether its testing the speed of your mobile net connection on your smartphone or simply locating the nearest Wi-Fi hotspot, here's five free apps for Google Android devices that are Wi-Fi and 3G related.

Speedtest.net Mobile

Speedtest.net has developed a free mobile app for Google Android devices that measures the speed of a web connection using the first access point, which could be your Wi-Fi or 3G connection. The app will measure the net connection upload, download and Ping speeds on your device. Once complete, the results will be displayed onscreen. Alternatively, it'll let you an access results from previous tests to help you work out when it may be preferable to use one type of connection over the other.

3G Watchdog

The 3G Watchdog app will allow you7 to keep an eye on your 3G/Edge/GPRS data usage ensuring you don't exceed any caps set by your network and incur charges.

2G-3G OnOff

This app simplifies the process of switching between 2G and 3G networks on your Google Android device. Why make four clicks when you execute the command in two?

Wifi Analyzer

Turn your android phone into a Wi-Fi analyser with this app, which will show the Wi-Fi channels around you, so you can identify which is the least crowded channel for your wireless router.

WiFi Finder

This free app, that works on both Google Android smartphones and tablets, lets you search for the nearest Wi-Fi hotspot from 55,000 locations in 144 countries across the world. You can even get directions to the hotspot without leaving the app.