Conditional call forwarding otherwise known as "Missed Call Forwarding" ensures that unanswered, busy or unreachable calls are forwarded to the YouMail Inbox.

T-Mobile Customers: If you have recently received a new phone, you may need to wait 24 hours for carrier features like call forwarding to be provisioned to your account. If your initial attempts at activation after a new device fail, please try again in 1 day.

Test call failed - If your test call fails despite not receiving any errors during activation, there is a chance that activation was still successful. You can do a manual test by calling your number from another phone and seeing if you hear the YouMail voicemail greeting pickup.

MMI Error - If you receive an MMI error, click here to learn more.

OCN Error - If you receive an OCN error, click here to learn more.

Wrong Carrier: YouMail needs special codes to activate Conditional Call Forwarding (CCF aka busy, no answer, unreachable call forwarding), and they can be different for each provider. If the carrier you selected differs from the one that provides your cell service, YouMail will not work. Go through the activation process again and select the correct carrier.
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Note: Just because your provider is using a major wireless carrier's cell tower does not necessarily mean they support CCF. Always double-check with them to make sure it's an offered feature.

Poor signal/Calls Not Forwarding - Your calls may not be going to YouMail for a few different reasons including, but not limited to, poor signal strength, tower maintenance, your phone’s OS is out of date, or you’re traveling abroad. Make sure you are in an area with a strong signal and then try the activation process again. Spotty network coverage can interfere with activation and can result in MMI or OCN errors.

Unlocked Phones - Unlocked phones can sometimes have issues activating. Especially, if they had been previously locked to a different carrier. Click here to learn more.

No Ring - It's possible there was a problem calling your phone, but instead the call just didn't ring your phone. Make sure you are in an area with a strong signal then try the activation again.

Answered Call - Oops, did you accidentally answer the verification call? You can easily verify activation again, just decline the call and follow the on-screen instructions.

Interrupted App - If the app was closed or interrupted after it was told to verify activation, the phone may report that the activation failed. Simply retry to verify activation again.