UMIDIGIInsert Sim and SD 17-01-2021 From this post you will learn how to insert 2 SIM and SD card into the UMIDIGI Bison at the same time and to do it properly.
It is suitable for the following types of SIM: Nano SIM, Micro SIM, Standart SIM. It is important that the phone's power is turned off when you insert the card.