BoostMobile. This Sprint-owned prepaid carrier aims for an urban demographic with its reasonably stylish phones and city-centric coverage maps (though with prices of up to $300 for a flip phone ...

Third in our pay-as-you-go line-up is the compact Samsung E370 slider phone that measures 43mm by 86mm by 20mm. You can buy it for around £100 and it comes with a 1.3-megapixel camera, colour ...

Like Sammy K, you can spend between $20 and $50 for a new flip phone, with some of the higher-end models featuring "modern" conveniences like Bluetooth connectivity and a better camera with flash.