4.4G Networks: Support GSM: B5/B8/B3/B2=850/900/1800/1900Mhz,
3G WCDMA B5/B1/B2=850/2100/1900Mhz; CDMA: 800MHZ;TD-SCDMA:B34/B39;
TDD-LTE: B38/B39/B40/B41=2600/1900/2300/2500MHZ;
FDD LTE: B1/B2/B3/B5/B7/B8/B20/B26=2100/1900/1800/850/2600/800/2600 MHZ. B4/B17/B12/B18 is optional for bulk order
9.Battery: Built-in 3.7V/4500mAh Lithium Battery;
11.NFC Module: Frequency is 13.56Mhz;
12.Fingerprint scanner: Optional for >=1000pcs;
14.2D Barcode scanner: Optional for >=1000pcs;
15.infrared thermography: Optional for >=1000pcs;
16.I/O ports: 1*Type-C port,1*microphone jack,1*SIM slot,1*TF slot;
17.Anti-Explosion design: Yes.