An antenna apparatus for an electronic device, the antenna apparatus comprising: a first side metal frame of the electronic device, wherein the first side metal frame has a fourth slot; a bottom metal frame of the electronic device, wherein the bottom metal frame has a fifth slot, and wherein a ground point is arranged between the bottom metal frame and a second side metal frame of the electronic device; a feeder connected to a fourth feed point, wherein the fourth feed point is arranged on the metal frame between the fourth slot and the fifth slot; and a plurality of tuning switches including a fifth tuning switch connected to the metal frame between the fourth slot and the fifth slot, and a sixth tuning switch connected to the bottom metal frame, wherein the fifth tuning switch is connected to a first side of the fourth feed point, wherein the sixth tuning switch is connected to a second side of the fourth feed point, and wherein the first side is closer to the first side metal frame than the second side, wherein the fifth tuning switch is configured to selectively switch between a disconnected state and a connected state in which the metal frame is connected to a second ground point via a lumped device (L1, L2, L3), and wherein the sixth tuning switch is configured to selectively switch between a disconnected state and a connected state in which the metal frame is connected to a third ground point via a lumped device, wherein if the fifth tuning switch is in the disconnected state and the sixth tuning switch is in the connected state, the first side metal frame is excited to generate radiation outwards and the fifth tuning switch is configured to adjust a radiation frequency band of the first side metal frame, and wherein if the fifth tuning switch is in the connected state and the sixth tuning switch is in the disconnected state, the bottom metal frame is excited to generate radiation outwards and the sixth tuning switch is configured to adjust a radiation frequency band of the bottom metal frame. a first side metal frame of the electronic device, wherein the first side metal frame has a fourth slot; a bottom metal frame of the electronic device, wherein the bottom metal frame has a fifth slot, and wherein a ground point is arranged between the bottom metal frame and a second side metal frame of the electronic device; a feeder connected to a fourth feed point, wherein the fourth feed point is arranged on the metal frame between the fourth slot and the fifth slot; and a plurality of tuning switches including a fifth tuning switch connected to the metal frame between the fourth slot and the fifth slot, and a sixth tuning switch connected to the bottom metal frame, wherein the fifth tuning switch is connected to a first side of the fourth feed point, wherein the sixth tuning switch is connected to a second side of the fourth feed point, and wherein the first side is closer to the first side metal frame than the second side, wherein the fifth tuning switch is configured to selectively switch between a disconnected state and a connected state in which the metal frame is connected to a second ground point via a lumped device (L1, L2, L3), and wherein the sixth tuning switch is configured to selectively switch between a disconnected state and a connected state in which the metal frame is connected to a third ground point via a lumped device, wherein if the fifth tuning switch is in the disconnected state and the sixth tuning switch is in the connected state, the first side metal frame is excited to generate radiation outwards and the fifth tuning switch is configured to adjust a radiation frequency band of the first side metal frame, and wherein if the fifth tuning switch is in the connected state and the sixth tuning switch is in the disconnected state, the bottom metal frame is excited to generate radiation outwards and the sixth tuning switch is configured to adjust a radiation frequency band of the bottom metal frame.