Refurbished iPhone SE for $85 here15
Apple's iPhone SE is aging for sure as it has been two years since it has been announced, but it's still sold by Apple and considered a viable midranger. In fact, it may still be the most powerful phone with a 4-inch screen available today. It rocks the same internals as the iPhone 6s, though, it lacks 3D Touch. So, you are almost getting the full Apple experience, but not quite.
Its camera is still decent, it feels nice in the hand, and it makes for a great backup device or a phone for non-powerusers. At a sub-$100 price, it's still a steal, albeit refurbished. But hey, you get a $35 prepaid card with Straight Talk. This means unlimited talk & text for 30 days and 2 GB of LTE, after which you get throttled to 2G speeds. Straight Talk phones are usually locked to the carrier for the first 12 months of use. After that, you can request a SIM unlock.