Boost Mobile offers the refurbished Kyocera Hydro Waterproof 3G Android Smartphone for Boost Mobile in Black, model no. C5170, for $14.99. Coupon code "CPORMN10" cuts it to $13.49. With free shipping, that's $2 under last week's mention and $16 under the lowest total price we could find for a new unit elsewhere. (However, we saw it new for $4 less in March.) This phone is purported to be waterproof in three feet of water for up to 30 minutes and features a 3.5" HVGA IPS touchscreen, 1GHz single-core processor, microSD card slot (2GB microSD card included), 3.2-megapixel rear-facing camera, Bluetooth, GPS, and Android 4.0 Ice Cream Sandwich OS.

Note: Although Boost Mobile describes this phone as having a dual-core processor, it is actually a single-core CPU. No warranty is provided, but Boost Mobile does offer a 14-day satisfaction guarantee.