My new android smartphone was only 9 bucks! The phone was on sale at my local "family dollar store" I removed the simm supplied by NET10 Wireless, switched the phone over to airplane mode, and using my home wifi I loaded it with an app called Groove IP
from the google play store. The app was only 5 more bucks, but a free version is also available if you don't mind the ads. Groove IP uses a service called "Ring to" to turn your phone into a wifi phone. It gives you free calls nationwide in the USA anywhere you can connect to wifi, and no simm card is needed. You get your own free phone number, and can make, and receive calls for FREE!