Walmart offers the Microsoft Lumia 435 No-Contract Prepaid 4G Windows Smartphone for T-Mobile in White for $24.94. Opt for in-store pickup to avoid the $4.97 shipping charge. That's $15 under our July mention, the best deal now by $25, and the lowest price we've seen. It features a 4" 800x480 LCD touchscreen, Qualcomm Snapdragon 200 1.2GHz dual-core processor, 8GB internal memory, Bluetooth 4.0, GPS, and Windows 8.1 with Lumia Denim OS.