Please kindly Note: The card prodvide professional engineer , if you don't know about sim card, pls don't buy it! 

Name: LTE Blank USIM Card

SIM Card Size: Standard SIM Card,Micro SIM Card and Nano SIM Card, 3 in 1

Compatible: 4G FDD LTE WCDMA GSM

Feature: Can be written ICCID, IMSI, KI, OPC .

Application: For Telecommunications Operator

Package include:

1pcs  SIM Cards

High-performance 8-bit HC8051 CPU core, fully compatible with the standard 8051 instruction set

High speed: 1 clock cycle/machine cycle, faster than standard 8051 instructions

The fastest instruction can be completed in one clock cycle

256 bytes of internal data RAM, 2048 bytes of external data XRAM

80K bytes FLASH, used as COS area and user data area

Data retention time for more than 10 years

 Over 100,000 repeated erasing and writing

Support 64 bytes/sector erasing, 4k byte block erasing

Maximum erasing time: 1.33ms, block erasing time: 1.33ms

Maximum byte programming time: 63s

ISO 7816-3 serial interface (T=0), support multi-baud rate, automatically send "60H" and 7 etu counting function

Low power consumption design: support two power saving modes, Standby and Stop Clock

Dual DPTR operation can improve code execution efficiency and compress code space

Wide power supply voltage: 2.7V~5.5V

Wide temperature standard: -40oC~+85oC