Sprint is now advertising their 4G mobile hotspot called “Overdrive” to iPhone users to increase their speeds of their iPhone. This device is pretty sweet but there are some limitations and costs. As a new customer it’s $99 plus The battery only lasts 3 hours. Sprint claims 4G speeds up to 10 times faster than today’s 3G from any other national wireless carrier but they are comparing 3G’s lowest speed of 600k to 4G’s fastest speed of 6Mbps. Also, the 3G connection is limited to 5GB per month where as their 4G is truly unlimited. Now, where do they have 4G? There’s a Map for that!

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Here is a list current cities that have 4G coverage at the time of writing this article: Atlanta, Baltimore; Chicago; Dallas/Fort Worth; Las Vegas; Philadelphia; Portland, Ore.;San Antonio; Seattle; Abilene, Texas; Amarillo, Texas; Austin, Texas; Bellingham, Wash.; Boise, Idaho; Charlotte, N.C.; Corpus Christi, Texas; Greensboro, N.C. (along with High Point and Winston-Salem); Honolulu; Killeen/Temple, Texas; Lubbock, Texas; Maui, Hawaii; Midland/Odessa, Texas; Milledgeville, Ga.; Raleigh, N.C. (along with Cary, Chapel Hill and Durham); Salem, Ore.; Waco, Texas; Wichita Falls, Texas.