It is always best practice to perform a Mantra rd service check validity query before your device stops working mid-transaction. You can easily do a Mantra mfs100 serial number check using the official Android test app or Windows client.
If the system reports your device is nearing expiration, do not wait for the service to drop.
Processing your Mantra rd service renew online early simply adds the new 1 or 2 years to your remaining validity, ensuring zero business interruption.