Hey there, magneto4794170 (clever play on the magenta username! ). I know it's been a few days since your initial post; so I wanted to check in and see how things are going. Were you able to activate your SIMs and determine which lines are which? Are these all pay-in-advance SIMs?
Yes, these are pre-paid SIM cards.
My colleague was able to go to a T-Mobile store and look up the phone numbers associated with each SIM card.
Is there a way to do this online?
Or via telephone?
I can't really use these SIM cards in a cell phone. There's no cell service. Only data.
Would they work with the T-Mobile app?
There's not a way to go online and do so, but we can confirm the last 4 of each SIM card number by phone number over the phone for you! I know you mentioned you don't have cell service, but typically it will still route to 611.
Were you able to figure out which lines were tied to their specific SIM cards? As mentioned above, this isn't a feature available online. We'd need our care team to look at which ones are setup through our internal account tools.