AMARELEC 7-Inch 512 MB Android 4.2 Unlocked Dual SIM Phablet (White) Tablet can not be power on you need to charge it for 2 hours and try to power on again upport GPS, can be used as a GPS navigation Unlocked worldwide phablet. 3G 2G Compatible with AT&amp;T and other GSM networks. Not compatible with CDMA network, such as Verizon. Please make sure your SIM card is not locked with PUK code before use. Feel free to contact us whenever a question pops up in your head, we are always here to help. Nandflash 4GB,TF card:Max.32GB 5-point HD capacitive touch screen for convenient operation;