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Intelligent Progarmmable Blank LTE USIM 4G Card WCDMA GSM Blank Mini Nano Micro SIM Writable For Telecom Operator The sim card already installed cos . you don't need program cos of it . About the SIM Tool . We provide it with our device . please check the bellow link : SIM set: https://www.aliexpress.com/item/32900944064.html?spm=a2g0o.store_pc_allProduct.8148356.23.26c12bb1n8vm6m Pls 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