If I assume correctly, you mean blinking LEDs for 3G and 4G for SIM2.
You can disable these LEDs by logging to your device via CLI/SSH and using the following commands:
- echo 0 > /sys/class/leds/mob2_gen_3/brightness
- echo 0 > /sys/class/leds/mob2_gen_4/brightness
If you decided to reenable them in the future, simply restart the related service using command below:
- /etc/init.d/ledman restart