US Carrier: CompatibilityAT&T: NO SERVICE T-Mobile: YES Verizon: YES Sprint: NO SERVICE USB OTG: YES, compatible Unihertz Titan Slim, The New Sleek QWERTY 4G Smartphone Android 11 Unlocked NFC Smart Phone Enhanced 48MP Camera The rear camera is optimized to 48MP compared to its predecessors, which will allow you to take better photos with clarity and vivid color. Basic Information Dimensions: 146.85*67.6*12.75mm Weight: 204g(with battery) CPU: Helio P70 Octa Core/Up to 2.1GHz OS: Android 11 Display Size: 4.2 inch Resolution: 768*1280 pixels SIM card type: Dual Nano SIM card Camera: 8MP FF + 48MP AF Memory: 6GB+256GB DDR4 1600MHz UFS 2.1 Band: GSM: Band 2/3/5/8 WCDMA：Band 1/2/4/5/6/8/19 TDSCDMA: Band 34/39 FDD/TDD LTE：Band 1/2/3/4/5/6/7/8/12/13/17/18/19/20/25/26/28A/B28B/34/38/39/40/41/66 CDMA2000: BC0/BC1 Battery: 4100 mAh NFC: Yes OTG: Yes Sensors: Fingerprint (front-mounted),G-sersor,Gyroscope,Proximity,Ambient Light sensor,Compass Infrared port: Yes USB: USB Type C Micro SD: NO Bluetooth: V4.1 WiFi: WLAN 802.11 a/b/g/n/ac 2.4GHz/5GHz WiFi Direct，WiFi Hotspot GPS: GPS + Beidou + Glonass 3.5mm jack: NO Radio: FM Radio Color: Black Wireless Charging: NO In the box: Titan Slim, User Guide, Warranty Card, Screen Protector, Headphone Jack Adaptor, SIM Eject Pin, Type-C Cable, TPU Case, Charger