Can I switch from a subscription to a prepaid SIM card?

TL;DR
Yes. You can do this via your settings

Context
The bundles of your subscription will expire immediately, so you'll have to top up your SIM card right away. If you don't, you won't be able to call/surf/send texts.

Please note:

- You won’t switch to a prepaid SIM card until your current bundle has expired.
- You cannot switch if you still have unpaid invoices/payment invitations. Consult your balance on ‘My invoices’ or ‘My payment invitations’.
- You can only switch from prepaid to a subscription or the other way around twice per month. For example: subscription --> prepaid --> subscription, or prepaid --> subscription --> prepaid.