The Nokia 215 comes with 64MB of RAM. The Nokia 215 packs 128MB of internal storage that can be expanded via microSDHC (dedicated slot). The Nokia 215 is powered by a 1150mAh non-removable battery. FREQUENCIES: COMPATIBLE TO USE WITH NETWORK SIM CARDS THAT WORKS ON SIM CARD 1: 2G: GSM 850 / 900 / 1800 / 1900 and/or 3G: HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 and/or 4G: LTE 800(B20) / 850(B5) / 900(B8) / 1800(B3) / 2100(B1) / 2300(B40) / 2600(B7) / 2600(B38) SIM CARD 2: 2G: GSM 850 / 900 / 1800 / 1900 and/or 3G: HSDPA 850 / 900 / 1700(AWS) / 1900 / 2100 and/or 4G: LTE 800(B20) / 850(B5) / 900(B8) / 1800(B3) / 2100(B1) / 2300(B40) / 2600(B7) / 2600(B38) IMPORTANT: PLEASE CHECK WITH YOUR NETWORK PROVIDER FOR COMPATIBILITY CHECK BEFORE YOU PURCHASE.