"The majority" of Sprint stores on the US east coast are either low or completely out of iPhone 5s, a spokesperson says. Where phones aren't in stock, the carrier says it's offering a $50 gift card and the chance to reserve a phone from an upcoming shipment. Rivals AT&T and Verizon have yet to comment on store stock, but since Sprint is still the least popular national iPhone carrier, it may mean that the two have far fewer units available.
