Ok, it does seem a bit overwhelming for some people when it comes to just setting up 1 phone line on the phone you bought, let alone multiple numbers on 1 phone with the Digits app. I just did this on my tablet and phone and I wanted to share the simple way of doing this.
First, go to the digits website (https://mydigits.t-mobile.com/) on T-Mobile and log in with your primary phone number to look at your account. You should have multiple T-Mobile numbers listed along with your personal/primary number there that is associated to your T-Mobile account.
Next click on your primary number (the first number you had with T-Mobile that is your personal line) and verify the e-mail you are using on this number (which should be the same e-mail address in your T-Mobile account). Once verified, go back to the previous screen that has the list of numbers on your account.
Next select the number you want to add and click it. Once the screen loads up, select "Add Myself". Once you click it, it should say successful. (I recommend going back to that number you just added and renaming the number to what it is for so you won't be confused later when you see a bunch of numbers in one phone. Do this with all the numbers in your account.)
Next, go to the next number you want to add and do the same thing like you did above by selecting the next number you want to add to your phone.
Once you finished adding yourself to all the numbers you want to associate with your one phone, go to your phone or tablet and go to the application store ("App Store" for Apple and "Play Store" for Android). Do a search for "T-Mobile Digits" (or just Digits and it will still come up with T-Mobile Digits) and install the application.
After you installed the app, open it. Click continue and then swype through the next few screens that show what you can do with the app. Finally click continue and you will be prompted to give Digits permission to use your device. Click next, it'll prompt for you to allow specific features (which you will need to allow for the application to work). Next, accept the terms and conditions.
Finally, you will be prompted to log in with your phone number and/or E-mail. Log in with your e-mail (the one you verified and used to link the numbers) and use your T-mobile account password.
Once logged in, you will be prompted to select which lines you wish to turn on. (You can turn them off again later by clicking the gear at the top left if you ever decide to stop using that number on your phone). Click the slider bar to the right of the number/name of the line you want to use. Do this for all the lines you want to use. Click continue at the bottom once all lines are selected.
Voilla, you are done! That simple
I really hope this helped someone.
Message was edited by: Dennie Goodwin