Amazon has phones and phone accessories on sale constantly, but it's not usually so time-sensitive. The new Huwaei SnapTo is on sale through Amazon as a Lightning Deal, meaning it's only available at this price for a few hours, or until the deal is sold out. It's usually $179.99, but right now you can have it for $139.99 with Prime shipping. So snap to it.

2015-05-07 11_51_55-Amazon.com_ Huawei SnapTo - Factory Unlocked (Black)_ Cell Phones & Accessories

The SnapTo is obviously a budget-oriented smartphone with a regular price well under the $200 mark. It has a 5-inch 720p screen, 1GB of RAM, 5MP camera, 2200mAh battery, and a Snapdragon 400. It only has 8GB of internal storage, but there's a microSD card slot too. Be aware, it runs KitKat, and you probably shouldn't count on a 5.0 update.

This is an unlocked GSM/LTE device that should work on AT&T and T-Mobile in the US. It has four LTE bands—2, 4, 5, and 12. That makes it a perfect match for T-Mobile's current and future LTE network, but it's missing AT&T's band 17 LTE. It should still work in a lot of places on LTE, and there's always HSPA+ too.