A novel hepta-band coupled-fed antenna is presented for WWAN/LTE metal-ring- frame (MRF) smartphone applications in this paper. Unlike the conventional solutions simply removing the redundant resonances generated by the metal ring, A creative couple-fed scheme is utilized in this proposed antenna to take full advantage of the metal ring resonances. With com- pact size occupation and wide band coverage, the proposed antenna for smartphones enhances the bandwidth coverage, as well as user experience of cosmetic appearance and mechanical strength.