Read the exact failed action
Confirm that the failure happens while downloading, not while ordinary streaming or signing in. Keep the title and visible message. A restriction on saving a file through mobile data is a different setting from the account’s content entitlement.
Also identify which connection is actually active. A phone can have a Wi-Fi symbol but a different connection state from the one expected at departure. Record the observed route before changing preferences so the effect of one change remains interpretable.
Open the documented Android preference
CANAL+ directs users to the profile in the application’s upper-right corner, then Réglages and Qualité, where downloading can be enabled. Choose according to whether you want the transfer to use the mobile connection. Keeping a Wi-Fi-only preference is a valid choice when that is the intended plan.
A mobile download can consume the mobile data allowance, so make the choice knowingly. Enabling this preference does not expand a plan, unlock an unavailable title or increase free device storage. It addresses the specific authorisation condition named in the error, so check that result before moving to another explanation.
Verify one transfer on the intended connection
Retry the same selected download and inspect its actual progress. If it remains blocked, note whether the same authorisation message persists or a different error appears. A changed message can indicate that the first setting was resolved while another requirement remains.
For help, provide the Android version, app version, title, connection and preference state. Distinguish this in-app control from a phone-wide network restriction managed elsewhere. Do not change unrelated work-device policies or purchase another membership merely because the application was configured to avoid mobile downloading.
Questions about this guide
What does the documented 3G/4G/5G error refer to?
CANAL+ says to enable mobile downloading in the application’s settings.
Where is the control in its Android guide?
Profile, Réglages, then Qualité.