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An advantage of the Samsung Galaxy A21s (SM-A217F/DSN 64GB/4GB) is the possibility of using two mobile carriers, a Dual-SIM device with two SIM card slots. Great connectivity of this device includes Bluetooth 5.0 + A2DP/LE, WiFi 802.11 a/b/g/n/ac (2.4Ghz, 5Ghz) + MIMO and NFC to make mobile payments or connection to other devices.