LG Volt 2
The LG Volt 2 is available on Boost Mobile for $150. It isn't an especially impressive device, but that low price (with no contract) could be alluring.
The Volt 2 runs Android Lollipop 5.1.1, but it's also saddled with LG's Optimus UI. If you prefer an unadulterated Android experience, look elsewhere.
The 8-megapixel camera takes serviceable, if unimpressive photos.
Stick to headphones -- the single tinny speaker might work in a pinch if you need to make a hands-free call.
The battery last for an average of 9 hours and 54 minutes on CNET's battery-drain tests.