A year ago I visited a kiosk in Helsinki where it's possible to exchange Euros to Bitcoins. Back then I had Nokia 920 mobile phone. Friendly kiosk staff advised me to install an app called Blockchain. In no time I had wallet of my own for my Bitcoins. (In fact Lumia 920 had no Blockchain app at that time. I used Blockchain via mobile web browser...).
I decided to activate my Bitcoin account again. There is a Blockchain app available at Google Play store. Now I'm able to send and receive Bitcoins "on-the-go". Next I need to find stores where Bitcoins are accepted in Helsinki Finland. I guess they are not that many just yet.
Blockchain Bitcoin wallet on Nexus 4
Below is my Bitcoin wallet address in two different shapes (QR and characters). If someone for some reason wants to send me money QR-code is first scanned (with a wallet app on mobile phone), the amount of money is typed in and after that money is sent. It's that easy!