Samsung Galaxy A16 4G 128GB Smartphone. Internal 128GB 4GB RAM. GSM / HSPA / LTE. Sound Loudspeaker Yes. 4G bands LTE. Speed HSPA, LTE. This item works on all GSM Networks worldwide. 2G bands GSM 850 / 900 / 1800 / 1900 - SIM 1 & SIM 2 (dual sim model only).