Best Buy offers the Samsung t199 3G Dual-Band No-Contract Prepaid Smartphone for T-Mobile in Black for $7.99. (Choose "Don't add a plan" to see this price.) Opt for in-store pickup to dodge the $2.99 shipping fee. That's $2 under our fall mention, a current low by $8, and the lowest price we've seen. Features include a 2" color LCD, text messaging, 250-entry phone book, SIM card, five hours of talk time, and six days of standby time.