The answer is that you ask one of your friends to share their connection with you from their Android phone. They can do this by creating a Wi-Fi hotspot – i.e. an access point on the device with a web link. Here's exactly how to do it.
This demonstration is on Android devices with firmware 4.x, but if you use a 2.x version of the OS the procedure is almost identical.
How to create a wireless hotspot
1. Open the Settings menu. Under Wireless & Networks, go to More > Tethering & portable hotspot > Configure Wi-Fi hotspot.
2. At this point you should set the login details for your hotspot. Assign a name to the network (SSID), define a password and press Save.
3. Now that you’ve correctly configured the hotspot, you need to enable it. Back on the Tethering & portable hotspot menu tap the Portable Wi-Fi hotspot option to check the box.
4. Now the hotspot is operational and you’ll be able to find the WiFi network from any WiFi-enabled mobile device (doesn’t have to be an Android), and access it by entering the password that was set in step two.
