G950U is us version of Samsung S8. It support all major us wireless carrier and also all major Canadian carrier as well. For CDMA network and carrier from other country, need to contact those wireless carrier to confirm. G950U should support any carrier that using below network bands. 2G bands GSM 850 / 900 / 1800 / 1900 & CDMA2000 1xEV-DO 3G bands HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 4G bands LTE band 1(2100), 2(1900), 3(1800), 4(1700/2100), 5(850), 7(2600), 8(900), 12(700), 13(700), 17(700), 18(800), 19(800), 20(800), 25(1900), 26(850), 28(700), 29(700), 30(2300), 66(AWS-3) This Certified Refurbished product has been tested and certified to work and Good condition, with minimal to signs of wear, by a specialized third-party seller approved by Amazon. Device has been tested and fully functional, ready for Reuse, Cleaned and Repackaged in working order, Clean IMEI. The product is backed by 90-days store warranty. Ships in non retail box with premium aftermarket charger and USB cable only. No other accessories included.