Lebara inactive Sim?

metrobus

I am on a 12 month sim only plan with Lebara
  
I’ve read that if I don’t use my Sim  for 90 days it’s deactivated.

Is that true even if I am paying the monthly bill?

eDicky

Where did you read it? There's no mention in the relevant T&C's:

https://mobile.lebara.com/gb/en/12-month-terms-conditions

cherryade44

I think this might apply to PAYG only
See clause 60  https://mobile.lebara.com/gb/en/terms-and-conditions?utm_source=impactradius&utm_medium=affiliate&utm_campaign=331321&utm_content=ONLINE_TRACKING_LINK&utm_clickid=STURVE0bpxyPRWhxQeRIaxGNUkFxVKSVmx9fTs0&utm_iradid=360019&utm_clickref=&default=page&irgwc=1#customer_obligations

Also see comparison of sim only and prepaid, under prepaid see credit validity 

https://mobile.lebara.com/nl/en/veelgestelde-vragen#:~:text=Credit validity,data once every 90 days.