1. SwitchBoardDj's Avatar
    Has anyone that was originally on Sprint and had any of the S21 devices swap out their Sprint sim card with a T-Mobile sim? How was your service afterwards and did RCS still work?

    I called into Sprint for a different reason and they offered o send me a new free T-Mobile sim card. But I declined because I was afraid all my services/features wouldn't work.
    03-13-2021 10:16 AM
  2. milliman's Avatar
    I'd switch in a heartbeat because the T-Mobile Experience uses their more frequent towers first then Sprint's . The two networks have a long way to go before both networks are fully integrated. I switched both our phones to T-Mobile before Christmas and have not regretted it. As a matter of fact, I moved to the T-Mobile billing system too for an improved customer service experience. I recommend doing it.
    SwitchBoardDj and Gray Area like this.
    03-13-2021 02:05 PM
  3. SwitchBoardDj's Avatar
    I'd switch in a heartbeat because the T-Mobile Experience uses their more frequent towers first then Sprint's . The two networks have a long way to go before both networks are fully integrated. I switched both our phones to T-Mobile before Christmas and have not regretted it. As a matter of fact, I moved to the T-Mobile billing system too for an improved customer service experience. I recommend doing it.
    Thanks for the info.
    03-13-2021 02:12 PM
  4. mustang7757's Avatar
    Has anyone that was originally on Sprint and had any of the S21 devices swap out their Sprint sim card with a T-Mobile sim? How was your service afterwards and did RCS still work?

    I called into Sprint for a different reason and they offered o send me a new free T-Mobile sim card. But I declined because I was afraid all my services/features wouldn't work.
    Is your s21 a sprint or Tmobile version?
    03-13-2021 08:17 PM
  5. milliman's Avatar
    I purchased it on Sprint but I think they are the same model.
    03-13-2021 08:58 PM
  6. mustang7757's Avatar
    I purchased it on Sprint but I think they are the same model.
    I was curious because I've heard in different forum a sprint version with Tmobile sim wasn't getting rcs until a call was made to Tmobile to straightened it out.
    03-13-2021 09:10 PM
  7. SwitchBoardDj's Avatar
    Is your s21 a sprint or Tmobile version?
    It's the fully unlocked model purchased directly from Samsung.
    03-13-2021 11:56 PM
  8. SwitchBoardDj's Avatar
    I was curious because I've heard in different forum a sprint version with Tmobile sim wasn't getting rcs until a call was made to Tmobile to straightened it out.
    That's the same thing I thought I read too. I think RCS don't work for T-Mobile.
    03-13-2021 11:57 PM
  9. mustang7757's Avatar
    It's the fully unlocked model purchased directly from Samsung.
    That's the same thing I thought I read too. I think RCS don't work for T-Mobile.
    Only sim/carrier that ever worked on Samsung unlocked version rcs is Sprint no other carrier for US , Google message app though works with rcs
    03-13-2021 11:59 PM
  10. vader4633's Avatar
    I started with the Sprint sim installed. Switched to the Tmo sim card to try it out. Everything worked great except when streaming movies they were throttled to SD. Switched back to the Sprint sim and using the same Tmo bands but my movies stream in HD.
    Gray Area likes this.
    03-15-2021 10:05 AM
  11. Grabber5.0's Avatar
    I'd switch in a heartbeat because the T-Mobile Experience uses their more frequent towers first then Sprint's . The two networks have a long way to go before both networks are fully integrated. I switched both our phones to T-Mobile before Christmas and have not regretted it. As a matter of fact, I moved to the T-Mobile billing system too for an improved customer service experience. I recommend doing it.
    Moving to the T-Mobile billing system is a completely different thing from TNX. Even though the coverage is essentially the same, being provisioned on a Sprint account is still pretty significant at this point. The biggest difference between using a Sprint sim and TNX or Magenta is roaming - legacy Sprint has a larger roaming footprint in some areas than legacy T-Mobile. Regardless of which of the three experiences your phone is on, the T-Mobile network is preferred, then the Sprint network, then the applicable roaming partners. So if you are with either core network your experience should, in theory anyway, be the same. The throttling behavior differs based on plan.
    03-15-2021 12:04 PM
  12. Benny07's Avatar
    I ordered from sprint and have the Tmobile Sim card in my ultra. RCS seems to work most if the time, I get the delivered and read receipts, but all the bubbles are green unlike before when RCS bubbles were blue. It also only says "enter message " when before it would say "enter chat message." Also wondering about updates now? Am I waiting for a sprint update or will it be t-mobile?
    03-16-2021 06:14 AM
  13. mustang7757's Avatar
    I ordered from sprint and have the Tmobile Sim card in my ultra. RCS seems to work most if the time, I get the delivered and read receipts, but all the bubbles are green unlike before when RCS bubbles were blue. It also only says "enter message " when before it would say "enter chat message." Also wondering about updates now? Am I waiting for a sprint update or will it be t-mobile?
    Should be Tmobile update
    03-16-2021 09:13 AM
  14. Oscar Maradiaga's Avatar
    It gave me issues but might be different for you. I originally did this on my s20 ultra and service was horrible using the tmobile sim card. I had to go back to sprint sim cards because tmobile hasn't yet fully integrated the sprint towers over to Tmobile.
    03-18-2021 07:56 AM
  15. mustang7757's Avatar
    It gave me issues but might be different for you. I originally did this on my s20 ultra and service was horrible using the tmobile sim card. I had to go back to sprint sim cards because tmobile hasn't yet fully integrated the sprint towers over to Tmobile.
    I agree if you can still use sprint for now and have better coverage then go that way until they don't let you anymore.
    J Dubbs likes this.
    03-18-2021 08:03 AM
  16. milliman's Avatar
    I completely converted my account to T-Mobile and I've been happier. The coverage is better and customer service issues take moments to resolve.
    06-16-2021 09:12 PM
  17. mustang7757's Avatar
    I completely converted my account to T-Mobile and I've been happier. The coverage is better and customer service issues take moments to resolve.
    Glad to hear that !
    06-16-2021 09:24 PM

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