Iphone 7 plus: Type Li-Ion 2900 mAh, non-removable (11.1 Wh). Build Glass front (Corning-made glass), aluminum back, aluminum frame. Resolution 1080 x 1920 pixels, 16:9 ratio (~401 ppi density). Loudspeaker Yes, with stereo speakers. WLAN Wi-Fi 802.11 a/b/g/n/ac, dual-band, hotspot. Card slot No.