The negative reviews for battery life I can not really share. Although I am an infrequent users and unlock the device principle overnight off completely, but with a few other additional small Artifices does the battery then with me a full week. This allows I live just fine. Here are my tricks: WiFi, GPS and Bluetooth in Disuse deselect. Then under "Settings / Wireless & networks / Mobile networks "the" packet data "and deselect the Network mode" GSM only " . Select Then it's not automatically to the Internet, but the one can change quickly when needed. Otherwise, the Ace 2 is a first-class unit - full marks !!