I have had this HTC Evo Design 4G (Wi-max) through Boost Mobile here in Central NJ in Union County. I received the phone from my cousin in SC and had the store here do the ESN change and upgraded to the Unlimited 4G Android plan in June 2013. I am very impressed with the phone. The battery does lose it's charge quickly, but after setting the display low, keeping the 4G and Wi-Fi off along with "App" management, I get 2-3 days on a single charge. The audio in the earpiece is very rich sounding and loud, in fact I keep it at half volume. The screen display is crisp looking and I have not had issues freezing or having to re-boot yet. The Boost service yields me about 1.2-1.5 Mbps download on 3G, and about 5.1 Mbps download on 4G (using Net Speed) on average. Texting is awesome, even with photos. I will keep all apprised, thank you. KC2FYA. Bill U.