Android: sim card emulation?

Question

Google

Due to the lack of sim slots on the phone (and money for another phone), the idea arose of emulating a SIM card on the Android OS. After all, as I understand it, there is nothing particularly "magic" on the SIM card. According to the wiki, Subscriber Identification Module (SIM) is a subscriber identification module. A SIM card has the following characteristics: ICCID, IMSI, CC, Operator, SPN, MSISDN (number).
Are there ready-made utilities (emulating the connection of a SIM card without physically connecting the module), and if not, then hint to read (I'll write it myself ..)

Answer 1

There is nothing special about the SIM, except for private keys and its own processor.
Alternatively, you can purchase a Bluetooth phone without a screen and buttons.
Like this - www.pvsm.ru/images/2016/09/30/skaz-o-tom-kak-ya-pe...