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Apple Watch - How to add to existing Digits Beta Promo line?


    I've been on a call with Digits support trying to get a new LTE Apple Watch added to an existing Digits Beta Promo line?  I was told that Apple did not design the Apple Watches with a usable SIM that can be manually added to the existing line.  No one is sure how to provision this.


    TO TMO SUPPORT: Any guidance on how to do this?


    TO OTHER TMO CUSTOMERS:  Has anyone been successful in getting an Apple Watch added to the Beta Promo Line?  How did you do this?


    Also, as a side note, I purchased my Apple Watch from Apple.  I'm getting the Authentication Error reported on Reddit when going through the option to enable Cellular.  I don't know if this is only for provisioning a new line or if this gives you an option to use the existing Beta Promo line.

      All replies

      • tmo_amanda

        Hey, bordelais!


        I'm sorry for all of the confusion. The answers to both of your questions can be found here. Once you read that over, please let me know if you have any other questions.

          • bordelais

            Hello Amanda,


            So, I think we have made some progress in identifying the first issue I'm running into.  The authentication error is CODE 409.  I have five Digits w/ Data Beta Promo lines on the account, the current maximum on a single account.  When I authenticate in the new apple watch, the account detects I am already maxed out and throws that 409 code error.


            I want to use those existing lines for the Apple Watches I purchased, rather than create a 6th line or more?  No one in support has an answer on how to get there yet, although I sense that there is an intent to find a solution.


            Would this work?


            1.  Support temporarily deletes one of the Digits w/ Data Beta Promo lines, leaving me with four existing lines.

            2.  I go through the normal process on the watch a create a new Digits data line, bringing me back to five lines (max).

            3.  Support reapplies the Digits w/ Data Beta Promo code on the new line.

            4.  Rinse and repeat the other apple watches I bought.

            5.  Credit any activation/upgrade fees (if any) incurred through the process.


            If that seems possible to get around this CODE 409 error during authentication, the next question is how do we get around the issue that I bought these Apple Watches directly from Apple.  It is my understanding from support that they are not in T-Mobiles inventory database which is the next failure I will run into.  Can I give support the IMEI numbers and have them added to the inventory database manually?


            I'm not to concerned if this takes a few days or a week to resolve.  But I'm not sure what to do, however, if this extends past the 15 day window to return the watches back to Apple.  I would prefer to not get stuck with devices I can't return and reorder from T-mobile when watches are available again.  Perhaps I am just looking for confirmation on the following:  1) T-Mobile will support Apple Watches sold by Apple, and 2) I can use these Apple Watches with the existing Digits w/ Data Beta Promo lines on my account.  My assumption at this point per the link you provided and hope is that it's a 'yes' for both.


            Thank in advanced, and sorry for the long winded response.

              • tmo_amanda

                Thank you for your patience, bordelais! Knowing the error code helps me out a lot. To answer your questions, yes, to both of them. Our support teams are aware of this error code and they're currently working on a fix for it. I don't recommend canceling one of your beta lines as I don't know if it can be re-added without jumping through a ton of hoops. I'd hate to see you lose that promotion.

                  • bordelais

                    After my discussions with Digits Support over the phone today and this thread I think the best course of action is to just wait for the Apple Watches sold by Apple to imported into T-Mobile's inventory database.  I would suspect this is a high priority actively being worked by both Apple and T-Mobile.


                    Can you confirm this technical understanding I have?  Once T-Mobile's inventory database is updated my watches should show an ICCID (E-SIM) number in My Watch > General > About > ICCID.  As soon as this is available I should be able to give this to support and have them manually update the SIM on each of the Digits w/ Data Beta Promo lines to get the watches working.  Is this the correct process / work-around to get my new watches on those beta lines?


                    Do you mind tracking this thread and just provide an update when the T-Mobile database is updated with the watches sold by Apple?  That way I won't need to bug Digits Support for status.  They seem to be overworked at the moment.  Thanks.

                      • tmo_amanda

                        That's exactly right!


                        I will be out of the office all next week but I'll make my colleagues aware of this thread and update you as soon as we have more news.

                          • bordelais

                            Thanks for the confirmation.  I feel pretty good about this now that there are multiple credible sources indicating that using our beta lines will be supported and instructions on how to do it.


                            Confirmation Sources:

                            • This thread.
                            • The thread you referenced earlier with Evan:  Re: Transfering free duplicate number to a new device
                            • Private conversation with TMOIMP on (9/23):  "If you purchased it directly form Apple, you're going to have some issues for a little bit (likely till this time next week) as we're making a fix to help support this as the inventory from Apple isn't in our systems and updating it is a bit difficult.  Okay so do need to know "what authentication error" are you getting? At this point it's trying to add a new Data with Paired DIGITS line to your account and as such it could be for a variety of reasons such as you're out of MI lines to be able to add another line.  Now since the device didn't come from us, it's going to be a little difficult to actually attach it to your beta promo. What you're going to have to do is set it up as a new line of service (once we get past that issue) and then have a your watch working, you'll need to call care and get a rep with escalated permissions to a) cancel your existing data with paired DIGITS beta promo line and b) change your new Apple Watch rate plan to a data with paired DIGITS beta promo. The rep will need to be able to add grandfathered plans to do this."


                            I briefly spoke with Digits Support today for a status update and they said they have not yet received a fix from Apple for the devices sold by Apple.  This is still pending at them moment with no ETA.  Hopefully soon.

                              • bordelais

                                I figured I would summarize the highlights in the other thread (Re: Transfering free duplicate number to a new device) here so they aren't so difficult search (It's a long thread):



                                DARKOMAN4 (QUESTION) 9/15 8:25am: With a new Apple Watch LTE coming out, and DIGITS duplicate number I received for free for trying BETA out can I transfer it to a new Apple Watch and still get it for free. I am using it now in my Samsung Watch S2.



                                TMO-LAUREN (RESPONSE) 9/19 12:41pm: Hey there! You'd be able to go ahead and do a SIM swap and have the watch operate as part of your DIGITS agreement! You would likely need to wait until the watch is fully released because as of now, you do need a non DIGITS plan and number to be associated with a pre-order!


                                TMO-LAUREN (UPDATE): Policies and info continue to be updates since the device isn't released yet, but our official documentation internally says: Customers on the Beta Data with paired DIGITS plan can buy the watch on that line and continue to receive the Beta offer.

                                So I take it that you should be able to keep on keepin' on, but we'll let you know if that ends up not being the case.



                                DEBJITJDV (COMMENT) 9/21 12:26pm: I am tagging tmo_chris and evanmf. Because if I am to believe evanmf which I do, then that pairing should be possible with free DIGITS line.



                                TMO_CHRIS (RESPONSE) 9/21 12:50pm:  debjitdv - tmo-lauren is correct. The new Apple watch can be used with the free Data with Paired DIGITS lines Beta participants received when opting to keep them after the beta.



                                LAESTRELLA (QUESTION) 9/21 9:10am: We won't have any issues with the plans getting swapped over to some non-free plan right? I'm a bit worried about this because I thought there was a separate Apple Watch Digits plan. I don't want a rep who doesn't know what he/she is doing to cause me to lose my free digits line.



                                EVaN-DIGITS (RESPONSE) 9/21 2:59pm: 


                                The quasi-official instructions:


                                Just for those who want to know I also work Apple products so the Watch has been under my "watch" lately which is yet another reason I can provide a quasi-official set of instructions on how to upgrade from your Free Data with Paired DIGITS beta promo line....


                                1. *SUPER IMPORTANT* - buy the watch from T-Mobile.  The Apple watch contains an embedded programmable SIM, at the moment they need to be inventoried from us in order for them to get a proper profile on network when doing a device upgrade - if you're wanting a brand new plan.. then you can get it from anywhere.  (This will be fixed, just not this moment - and this is critical for those who are upgrading from the promo line).


                                2. Do not let the REP create a new rate plan for you.  You want to tell them you want it as a "Handset Upgrade" for your existing device on your Data with Paired DIGITS line.  Some reps, will likely argue with you about this however since the content that we're providing while comprehensive may be difficult for them to decipher for all the different conditions and situations.


                                3. When you get the watch, you should go to your iPhone and launch the Apple Watch application.  From there you'll be asked to pair the new watch with your phone, go ahead and do it.  It should then bring you to a screen where you are asked about doing a SIM Swap from an existing Data with Paired DIGITS device.  If all goes well, select the accounting number (the underlying non-usable phone number) for that line and you should be good to go.



                                ... If you don't follow these instructions, and something goes wrong along the way (and you get to a screen asking you to create a new line of service on your plan (you'll be prompted for the last 4 of your SSN), then here's what I'd recommend.

                                A. Go ahead and create the line of service (it's free for 90 days).

                                B. Call Care and have the accounting number for both the old line of service and the new one that you just created.

                                C. Ask them to convert the new on to the Data with Paired DIGITS beta promo rate plan and then cancel the old one.  You'll likely need a rep with elevated privileges to do that since they likely won't be able to see the beta promo rate plan in the list of rate plans to choose from.



                                Since I know this will be another topic of conversation ... the 512 kbps rate limit is immaterial for the Apple Watch - we've used it, we've tested it, we've looked at the results -- your network connectivity is what's most important and it's possible you may see something when you're at the edge of the network though nothing consequential..  That said, if you want the faster speed that is being offered for that device, you can switch and pay for the new rate plan that is being used for the Apple Watch exclusively - we are not providing that as a free upgrade from the lines we provided for the beta promo.


                                Thanks for participating and helping to improve the products and look forward to hearing what people think about the new watch....

                                1 of 1 people found this helpful
                    • bordelais

                      A quick update.  Evan and team were able to provide a solution for me.  I have multiple apple watches working now on my account. 


                      For anyone stumbling across this thread with similar symptoms, here is what we were able to resolve.


                      • Fixed issue with devices purchased directly from Apple.
                      • Fixed 409 error code when setting up cellular in the Watch App
                      • Provisioned Apple Watches on the Digits w/ Data Beta Promo lines


                      I provided EID numbers from each of the watches and someone was able to manually add the inventory to T-Mobile's database for the e-sim provisioning and properly setup the lines on the back end.  Once that was done, I just had to go through the pairing process again and everything worked!


                      I just wanted to note a quick 'thank you' to all the support staff here on this site, no only for helping with specific issue, but for the top notch support you provide on a day-to-day basis.  You guys are a reference model in this industry for how to run things.


                      You can mark this thread as 'resolved' or 'answered'.

                      • jobepi

                        Despite all the useful info here, I couldn't get anyone at Tmobile to help me. I even read these tips verbatim to the rep. But he insisted that the free Digits number I have (but don't use) can't be used to support my new Apple watch. So I'm forced to spend $15 (why did it go up) a month once the 3 month trial period ends. ....not happy.