The Samsung Galaxy J7 Crown is a good Android phone with 1.6GHz Octa-core processor that allows run games and heavy applications.
With one SIM card slot, the Samsung Galaxy J7 Crown allows download up to 300 Mbps for internet browsing, but it also depends on the carrier.
Good connectivity of this device includes Bluetooth 4.2 + A2DP, WiFi 802.11 a/b/g/n/ac [wifi5] (2.4GHz, 5GHz) + MIMO, but it lacks NFC connection.