Be forewarned. Do not provide credit card details.
Be warned: if you provide your credit card details to Simba, they will auto-renew your monthly plan without explicit consent, even on "no-contract" plans. Most alarmingly, there is no option to delete your credit card details from your account once added. Their termination process is intentionally difficult. You cannot terminate early; you are forced to submit a form exactly 7 days before expiry. It feels like a trap designed to force another month of billing. Don't fall into this trap!
