It's not cellphone. Device supports data only. NFC: Apple Pay only. Flash ROM memory: 16, 64 or 128 GB. Dual core Cyclone CPU, PowerVR G6430 GPU. Retina Display with fingerprint-resistant oleophobic coating. A7 chip, M7 motion coprocessor. Autofocus, f/2.4 aperture, five-element lens, hybrid IR filter. Video image stabilization, 3x video zoom. FaceTime HD Camera: f/2.2 aperture, 720p HD video recording, auto-HDR photos and videos. Fingerprint identity sensor built into the Home button. WiFi 2.4 GHz and 5GHz; HT80 with MIMO. 2G, 3G &4 G networks support depending on version and carrier. LTE bands 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25, 26. Includes Apple SIM - U.S. and UK only. Digital compass. FaceTime video. Video formats supported: H.264 video up to 1080p, 60 frames per second, High Profile level 5.0 with AAC-LC audio up to 160 Kbps, 48 kHz, stereo audio in .m4v, .mp4, and .mov file formats; MPEG-4 video up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second, Simple Profile with AAC-LC audio up to 160 Kbps per channel, 48kHz, stereo audio in .m4v, .mp4, and .mov file formats; Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second, audio in ulaw, PCM stereo audio in .avi file format. Up to 10 hours of surfing the web on Wi-Fi, watching video, or listening to music. Up to 9 hours of surfing the web using cellular data network. Three-axis gyro, accelerometer, ambient light sensor.