Grandfathered Simple Choice

Hey K3rb3ar,

I have a Simple Choice plan also, and my plan is the 4 lines for $100 with each additional line being $10. I currently have 6 voice lines, 2 Mobile internet (Tablet) lines, and one wearable (watch) line. Data is not shared. Each line has their own unlimited data. Things have changed since 2005 when I originally started with T-Mobile, especially with Data. Now, it seems you can have a voice plan without data. They used to come bundled in (talk, text and data). My plan used to include 2.5GB of high speed data per line, then T-Mobile surprised us by upgrading our data to 4GB. It was still an unlimited data plan but high speed wasn't unlimited. I know. I normally use more than 2.5 GB, plus I didn't want my video streaming resolution to be capped at 480p, so I opted for a $20 data add on that would give me unlimited 4G high speed internet with 5GB of hotspot data. No other line on my account has this add-on. This means that when I looked at my bill, I wasn't paying $100 but $120 due to the $20 add-on. I think this is what may have happened to you guys. Someone must have opted for a different data plan. With regards to making changes to the data plan, you may need to call customer service directly as the options to select new data add-on are sometimes limited on the T-Mobile app. You can also reach out to T-Force via twitter (hopefully, you use twitter) by sending them a DM (Direct Message). 

NB

My lines have been further upgraded to unlimited high speed thereby removing the 4GB high speed cap.

Im on a Simple Choice Family plan with 3 lines. I wanted to add a 4th line. I went thru the motions fo adding a line from the website. at the end it said it would be extra 25 a month. 10 for the extra line and another 15 for data, even though i never asked for data. I tried to remove the data add-on but it will not remove and forces me to keep it. I cant even change it to the free data option.

The plan is grandfathered where it is at when the plan is removed.  Adding lines are not subject to grandfathering because those lines are NEW lines.  

I am also on a grandfathered plan for over a decade. And recently around 3rd week of July this year we decide to try a Mobile hot spot (kid homework on the go) with 10GB plan and the representative told me I don't have to worry about which plan I need yet for now just pay for taxes and fee to start my 30 days free trial. She promised to call me back before 30 day period ended (should be 1st week of Aug) but I've never received any call back at all but when I talked to the agent last week, they kept saying that someone was calling me and left the voicemail even though I've see no any voicemail on the day they're claiming. And the agent told me that I can't return the device anymore bc it's over 20days old (*no one ever told me about the 20days policy at all in the first place) from the day I sign up for the trial, I was trying to explain the situation still no use, they said I have to keep paying for the device bc they can't accept it back even though I don't use the service that it didn't work!
I was told by one of the representative that the company doesn't offer much to us with grandfathered plan bc we're not new sources of profit to them so there's not much room to move at all either switch plan or closing the account, they're targeting new customers and/or higher rate plan customers only with many promotions and stuffs. Very disappointed… considering different carriers now :(( 

I'm not sure where to even start because we have had numerous issues with our account starting in June, that still have not been completely corrected and resolved, but from reading the various replies here, the issue that I think we just may have inadvertently created for ourselves because we have a Simple Choice North America 6G Family Match account (that my husband has had since joining T-Mobile 12 years ago).  However, last night we had them finally remove 2 of our 4 lines (we had requested this removal in June but it never was completed and our other billing issues took a huge priority over that one.) We had been paying $10/per line per month, plus taxes and fees and we didn't have a need for them since his daughter is now on her own plan and he didn't need a plan for his tablet anymore, so they were about $40/month we would save. We were reassured multiple times that we would be able to add back any lines we wanted (up to 6), but said we may not get the same price/month as we currently had, but we noticed our August bill that inexplicably both lines went up to $20/per line and the reps couldn't tell us the reason for the increase and we didn't push it since we were removing them anyway.  But YIKES!  Reading all of the posts here makes me worried that they misinformed us BIG TIME, and if that's the case, I think he will want to leave T-Mobile, considering the very big issues that are still ongoing with our billing invoices. Sorry to hear a lot of you have been told you can't re-add lines.

I have a really old plan that is only voice. To get data, we added 3GB of high speed data per line for $5, which got upgraded to unlimited data last year as part of a T-Mobile special upgrade for all existing plans that had caps. My problem is that I want to add a new line of voice service and data, but now T-Mo wants to charge me $20 for 3GB of data. T-Mo reps said that we can't get the $5 deal on new lines any more. But I'm wondering is there any way to ask them to give us the same $5 data deal that we currently have on all our original lines? If so, who would I talk to? ¡Gracias!

The plan codes are no longer in the system. You are grandfathered in to what you have. 

I am also grandfathered into the simple choice plan. I've been with T Mobile for 17 years we have five lines. I called to see if we could add a line and they said sure! After the rep tried, I was told we were not able to add the line. Then I get my bill. I was charged for four days of the magenta military plan and I'm not military so when I called, they said that's how they add a line they upgraded it, add the line and then downgraded it, they said this is a normal way they add a line to the grandfathered plan. The whole thing was crazy. Why should I pay for the upgrade? I was never informed they were going to do it. They also removed all our data plans and one of them was unlimited high-speed data for $10 another grandfathered plan, of course we can't get that back! 

I'm having the same problem with grandfathered plans of 4 lines for $100 here. I reduced to 3 lines several years back and my bill remained the same 3 lines for $100. Sadly, TMobile treats new customers better than 20+ year, loyal customer. The fact they merged with sprint and reduced competition in the cell phone market doesn't help. Now, $100 for 4 lines is only available on prepaid plans or holiday promotion like this for new customers.  

https://www.t-mobile.com/news/offers/t-mobile-holiday-offer-4-iphone-15s-and-4-lines-for-100-mo 

Actually after I last posted to this thread, I called customer service later at night and was able to find a TMo supervisor based overseas who was able to find the right plan codes and add them manually!! (In other words, they were able to allow me to add an additional line for the same fee as our current lines on our Grandfathered plan.) He said that for the agents, the service codes are found under plan options and features, and that the old legacy tool they use (Samsung) can't do it. I'm not sure exactly what that all means, but perhaps if you tell a customer rep that will help move you in the right direction!