How to remove SIM Card PIN from your GSM/UMTS modem on Ubuntu (Linux)

If your GSM modem SIM Card is configured with a PIN a NetworkManager is constantly trying to ask for that PIN on every wake up... and this is quite annoying indeed. So the easy way to remove a PIN protection from your SIM Card under Ubuntu would be:
sudo apt-get install gsm-utils
sudo gsmctl -d /dev/ttyACM0 -o unlock sc all 1234
here 1234 is actually your SIM Card PIN to be removed.


Unknown said...


Under Ubuntu 12.10 x64, I found my GSM modem under /dev/ttyUSB0

Just check dmesg for the device path after plugging it in.

MaryJohn said...

good one

MOMOTOM said...


MOMOTOM said...

An IoT SIM card is outlined to send and get information instead of empowering voice calls. With more memory and solidness than their shopper partners, IoT SIM cards moreover final longer—up to 10 a long time or more. They’re able to resist natural challenges like vibration, erosion, and extraordinary temperatures.

MOMOTOM said...

Urgentpassport.com is a private company, now not affiliated with the government, that charges an additional price to expedite the delivery of your US passport in days. If you currently do not want to use our expedited courier services, you may pass without delay to your nearest passport agency. As a courtesy, our Help Center net web page gives all the requirements and forms you may want. Rush Passport

Alia parker said...

An International Data SIM card is a specialized type of SIM card designed to provide data connectivity to users while traveling abroad. Regular SIM cards are typically associated with specific local mobile network operators and are mainly intended for use within the country of purchase.