The Sony Xperia Z2 tablet is a 4G tablet operating on 2G, 3G, and 4G network bands using GSM, HSPA, and LTE technologies. It was unveiled to the public on February 2014 and released on March 2014 measuring 266 x 172 x 6.4 millimeters and weighing 439 grams. It uses micro-SIM card and has TFT capacitive touchscreen display with 16M colors at 1200 x 1920 pixels screen resolution.
It is IP58 certified: dust proof and water resistant over 1.5 meters for 30 minutes. It supports multi-touch up to ten fingers protected by shatter proof glass with Triluminos display and X-Reality Engine. It runs on Android 4.4.2 KitKat upgradable to Android 5.1.1 Lollipop powered by Qualcomm MSM8974AB Snapdragon 801 chipset, 2.3 GHz Quad-Core Krait 400 processor, and Adreno 330 GPU.
It supports microSD expandable up to 64 GB. It runs on 3 GB RAM with 16 GB internal storage. The primary camera supports 8.1 megapixels with autofocus featuring geo-tagging, touch focus, HDR, panorama, and face and smile detection. It supports 1080p video recording at 30 fps and 720p at 30 fps with HDR and stereo sound rec.
The secondary camera supports 2.2 megapixels and supports 1080p video recording at 30 fps. It has 3.5-millimeter jack with 3D surround sound and active noise cancellation with dedicated mic; Wi-Fi 802.11 a/b/g/n/ac with dual-band, Wi-Fi Direct, DLNA, and hotspot support; Bluetooth 4.0 with A2DP and aptX support; GPS with A-GPS and GLONASS support; NFC; infrared; FM radio with RDS support; and microUSB 2.0 with MHL 3 TV-out and magnetic connector support.
It has built-in accelerometer, gyro, and compass sensors. The pre-installed web browser supports HTML5. It runs on non-removable Li-Po 6000 mAh battery with standby time up to 1240 hours on 2G and 1200 hours on 3G. Talk time is up to 13 hours via multimedia. Since you have a problem with the touchscreen function, try factory reset.
To factory reset Android 4.4.2 KitKat, go to “Apps”, “Settings” then “Backup & reset”. Make sure “Back up my data” and “Automatic Restore” are unchecked. Under “Personal Data”, tap “Factory data reset” then “Reset phone”. Before factory resetting your device, back up all your data and remove the memory card and SIM card.