Open the back cover and insert a standard-sized SIM card.
Supports 4G LTE (1800 MHz) and 3G HSPA+/UMTS (2100 MHz). driver modem xidol k5188
The K5188 uses a specific USB bridge chip (usually CH340 or a similar serial converter). Windows 10 and 11 often try to auto-install the wrong generic driver. This causes a conflict where the Xidol software (XTOOL Manager) simply cannot "see" the device. Open the back cover and insert a standard-sized SIM card
Linux often handles mode switching automatically via the usb_modeswitch package. driver modem xidol k5188
Complete Guide to Xidol K5188 4G LTE Modem Drivers and Setup The Xidol K5188