The Samsung Galaxy S23 Ultra is powered by 3.36 GHz Octa-core processor and it comes with 12GB of RAM. The Samsung Galaxy S23 Ultra packs 512GB of internal storage that cannot be expanded. The Samsung Galaxy S23 Ultra runs Android 13 and is powered by a Li-Ion 5000 mAh, non-removable battery. FREQUENCIES : COMPATIBLE TO USE WITH NETWORK SIM CARDS THAT WORKS ON SIM CARD: 2G : GSM 850 / 900 / 1800 / 1900 and/or 3G : HSDPA 850(B5) / 900(B8) / 1700|2100(B4) / 1900(B2) / 2100(B1) and/or 4G : FDD-LTE 600(B71) / 700(B12) / 700(B13) / 700(B14) / 700(B28) / 700(B29) / 800(B20) / 850(B5) / 850(B18) / 850(B19) / 850(B26) / 900(B8) / 1700|2100(B4) / 1800(B3) / 1900(B2) / 1900(B25) / 2100(B1) / 2100(B66) / 2600(B7) : TDD-LTE 1900(B39) / 2300(B30) / 2300(B40) / 2500(B41) / 2600(B38) / 3500(B48) / 5200(B46) and/or 5G : N1/N7/N28/N41/N66/N71/N78/N258/N260/N261 SA/NSA/Sub6/mmWave + eSIM: IMPORTANT : PLEASE CHECK WITH YOUR NETWORK PROVIDER FOR COMPATIBILITY CHECK BEFORE YOU PURCHASE.