New in Box Samsung Galaxy S21 5G SM-G991U 128GB – Unlocked All Carriers. Work on carriers that use GSM networks all around the world, and Verizon, ATT, or T-Mobile in the US. Most carriers outside the US also use GSM networks. Our in house technicians have removed the seal on the box for unlocking purposes. Whats in the box. 2 Charger is NOT included. Samsung no longer provides charging block. SIM CARD NOT INCLUDED (Usually available for free from your carrier).