Newegg offers the LG Optimus F6 No-Contract 4G Android Phone for T-Mobile in Black for $99.99. Checkout via Visa Checkout and apply code "VISACHECKOUT" to cut it to $89.99. With free shipping, that's $10 under our September mention and the lowest total price price we've seen for this phone. (It's a current low by $40.) It features a 4.5" 960x540 touchscreen LCD, 1.2GHz dual-core processor, 4GB internal memory, 5-megapixel rear camera, 1.3-megapixel front-facing camera, 720p video recording, 802.11n wireless, Bluetooth 4.0, microSD card slot, and Android OS 4.1.2 (Jelly Bean). Coupon expires October 31.
Of note, the coupon can only be used once per account.