I am interested in buying my first smart phone. I am very interested in the Nokia Lumia 630 because of its incredibly low price and basic specs. However, I looked up apps I would like to use in the Microsoft Store (whatsapp, spotify, 6tinder) and all of them say "To use this app, upgrade to Windows 10.". I find this odd since Windows Phone 10 is still beta, I believe? Possibly it tells me this because I am visiting the store from my PC. Anyhow, my fear is that most apps will soon only function on Windows 10, which I have read may not become available for the 630, and I need to buy a new phone again. Is this a realistic thought? Is it the reason the phone is dirt cheap right now?