US Cellular's 4G is in the 700mhz band, but their particular block isn't compatible with most phone manufacturers. Apple's iphone won't work in that block, so it won't work on US Cellular's network. SIM cards are not swappable with US Cellular either. I know on Verizon, AT&T, T-Mobile you can swap SIMs and use it in another phone, but not with US Cellular. Each phone has a SIM card programmed to only work with that phone. Seems pretty backwards to me. Just another couple of strikes against USCC vs their competitors.