The Kyocera DuraXT isn't just a flip phone. It's one tough mother of a flip phone that shrugs off dust, shock, and water. Call quality is great, too, and it's a vehicle for Sprint's push-to-talk protocol.
The first of this line was a sorry excuse for a cell phone, but I'm happy to say that Verizon's Samsung Gusto 2 has redeemed its reputation. It's comfortable, and calls sound great. While not exactly cheap at $79.99, it's one reliable option in Verizon's portfolio.
Looking for something more robust than a flip phone, but without the monthly smartphone data plan? LG's reasonably priced Rumor Reflex comes to Sprint and the prepaid Boost Mobile. A QWERTY keyboard complements that touch-screen display, and apps inside keep you connected to e-mail, social networks, and the Web.
When it comes to flip phones on a no-contract carrier, it's hard to beat the Samsung Entro's price. I mean, this phone costs $15 upfront, which is almost unheard of for a postpaid cellie. Sure, it's extremely bare-bones (for example, there's no camera), but if all you want to do is send a call or receive a text, the Entro is well-qualified.
Cherry-red and dare I say, even stylish, the Samsung Chrono 2 lends its uncomplicated frame to the time-honored tradition of keepin' it simple. It comes free with a two-year contract, and costs just $20 prepaid.