An electronic device includes: a housing including a plate and a back plate facing a second surface of the plate and including a planar area facing a first direction, a display module including a display disposed on a first surface of the plate, a battery and a circuit board disposed on the second surface of the plate, a first flexible substrate extending from the display module, and a second flexible substrate extending from the circuit board to the first flexible substrate across the battery. The first flexible substrate includes a first connector, and the second flexible substrate includes a second connector. The first flexible substrate and the second flexible substrate are configured such that the first connector and the second connector are coupled in a second direction different from the first direction.