This phone will only work with 2G: GSM 850\/900\/1800\/1900MHz 3G: WCDMA 850\/2100MHz It's unlocked for worldwide use, customers please take a check to see if your local area network or the communication operator you are using is compatible with this phone before purchase. You can also go to this topic [===Official Help Center=== How To Check If This Phone Can Be Used In Your Country] to find how to confirm this. Note: NO.1 M2 is Android 4.4 now, you could upgrade into Android 5.0 by using USB connection. We will get the firmware after confirmed by our supplier. Then we will post it in our description. Thanks for your understanding! -- 2015.4.16. More Details: Basic Information Model NO.1 M2 Band 2G: GSM 850\/900\/1800\/1900MHz 3G: WCDMA 850\/2100 Sim Card Dual SIM Card Dual Standby Service Provide Unlocked Style Bar Color Orange, Black Shell Material Plastic System OS Android 4.4 (It will change into Android 5.0 later and this Android 4.4 can be updated into Android 5.0 by yourself, too) CPU MTK6582 1.3GHz quad core ROM 8GB RAM 1GB Screen Display Size 4.5 Inch Type qHD Capacitive touch screen Resolution 960*540 pixels Support Format Ringtones Type Polyphonic\/MP3 Audio File Format MP3\/WAV\/AMR\/AWB Video File Format 3GP\/MPEG4 Image File Format JPEG\/BMP\/GIF\/PNG E-book Format TXT\/CHM\/DOC\/HTML FM Radio Yes,earphone needed Earphone Port 3.5mm Card Extend Support TF card up to 32GB extended Data Transfer & Connectivity Data transfer USB\/Bluetooth Mobile internet WAP\/WIFI General Camera\/Picture Resolution Dual Cameras, front camera 5.0MP, back camera 13.0MP with Flash light Language English, Bahasa Inonesia, Bahasa Melayu, Cestina, Deutsch, Spanish, Filipino, Francais, Lietuviu, Italiano, Romana, Nederlands, Polski, Magyar, Suomi, Turkce Svenska, etc (More details please refer to the screenshots) Phonebook 500 Message SMS\/MMS Input Handwrite\/Keypad WIFI Yes,