The Apple iPhone X is a good iOS phone with 2.39Ghz Hexa-Core processor that allows run games and heavy applications.
With one SIM card slot, the Apple iPhone X allows download up to 1024 Mbps for internet browsing, but it also depends on the carrier.
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.
Including the battery, the Apple iPhone X phone has 174 grams and it's a very thin device, only 7.7mm.