A:Answer Hi there Kico, thanks for taking the opportunity to ask us your question about the Samsung Galaxy A15. The advertised unlocked Galaxy A15 is compatible with AT&T, Boost Mobile, Cricket, Google Fi, H2O Wireless, MetroPCS, Mint Mobile, Simple Mobile, T-Mobile, Ting Mobile, Ultra Mobile, US Cellular, and Verizon. This unlocked device works on the 4G LTE and 5G wireless network. Being that this is an unlocked device, we recommend reaching out directly to the wireless provider of your choice in Cuba to inquire if this device would be compatible on their wireless network. If you have any additional questions for us or if you would like any further assistance, let us know by contacting Samsung Support. Thank you for being a loyal Samsung customer. - Debra