T-Mobile offers the ZTE Avid Trio Prepaid Android Smartphone for T-Mobile bundled with a $100 T-Mobile Refill Card and SIM Starter Kit for $110 with free shipping. That's a savings of $111 and the lowest price we could find, although we saw it for $10 less last week. The phone features a 5" screen with Dragontrail scratch-resistant glass, 5-megapixel rear-facing camaera, 2-megapixel front-facing camera, 1.4 GHz quad-core processor, Bluetooth 4.1, 1GB RAM, and Android 6.0 OS (Marshmallow).