restart your sim card? why not!

recently Im extremely technologically challenged, my laptop is hardly alive- well, i cant use it...
now my cell phone- just stopped working...I called to Vodafone helpline and after hundreds of press 1 for English, press 2 for something, press for...they told me that I have to restart my SIM! And this option was hidden in roaming section... not too friendly use, uh?

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