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  1. Thread AuthorThread Author   #1  
    Mark_Venture's Avatar
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    Default Can't SMS while on phone call?

    I know with my Verizon iPhone 5, it didn't support simultaneous Voice and Data, even over LTE. And since its my work phone, I rarely texted on it. I got upgraded to an iPhone 5S at release day, and today, was trying to text while on a phone call...

    I was surprised to see that I could not.

    Here is how I tested while on phone call with my Verizon iPhone 5s.

    I sent text from my VZW Moto X to iPhone 5s. The 5S didn't receive it. I tried sending from iPhone 5S to my X... It FAILED to send. Then I sent an SMS from my T-Mobile Galaxy S3 to iPhone 5s, again the 5S didn't get it. I tried sending from 5S to GS3, failed. When I hung up the phone call on the 5S, I went into message, opened the two that failed and hit try again. They sent and were received on the other phones. So I sent from X and GS3 to iPhone 5s, the 5S received them.

    Those messages I sent to the 5S while on the call still haven't been received on the 5S. Its been about 30 minutes since I hung up the call on the 5S.

    I expect iMessage uses data, but since I'm texting with two Android phones, iMessage shouldn't come into play, it should be plain SMS. And my X and GS3 can text while on the phone just fine, as could my past non-Apple phones.

    Is this happening for anyone else on their Verizon iPhone 5S?

    Rebooting the phone didn't help. The only thing that might come into play here is the internal antenna system at work, but walking outside, out of range of the internal system, I still had the same issue. I'll try again when I get home tonight.
  2. #2  
    Fausty82's Avatar
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    Default Re: Can't SMS while on phone call?

    As I understand this, itís not a simultaneous voice/data issue... SMS actually uses the voice channel.
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  3. #3  
    Karenkcoulter's Avatar

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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by Fausty82 View Post
    As I understand this, itís not a simultaneous voice/data issue... SMS actually uses the voice channel.
    Exactly. SMS uses the same CDMA radio as voice so both cannot be done at the same time.
  4. #4  
    rayz336's Avatar

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    Default Re: Can't SMS while on phone call?

    Interesting, I'm pretty sure I haven't run into this problem with my 4S
  5. Thread AuthorThread Author   #5  
    Mark_Venture's Avatar
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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by Karenkcoulter View Post
    Exactly. SMS uses the same CDMA radio as voice so both cannot be done at the same time.
    Not to completely disagree with you, but as I typed in my OP... I *CAN* text and talk at the same time on my VZW Moto X as I just did it during my testing. It uses CDMA/1xRTT for voice too. I know from past experience, I could with my HTC Thunderbolt and Moto Bionic too. My T-Mobile GS3 is of course not CDMA, but it can talk/text at the same time.

    To be honest, of the many phones I've had (see list here -> Post Your Phone Timeline - Page 2 - Android Forums at AndroidCentral.com ) this is the first time I've run into not being able to text and talk at the same time. However, with my iPhone 4s, iPhone 5 and iPhone 5s being my work phones and I rarely if ever text on them, so I don't recall ever having to text while on a phone call with them before today.

    And even if for whatever reason, I can't talk and text at the same time... what happened to the SMS messages sent to my 5S while I was on the call? Shouldn't they have come into the phone after being hung up from the call?
    Last edited by Mark_Venture; 11-07-2013 at 11:51 AM.
  6. #6  
    SeanHRCC's Avatar
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    Default Re: Can't SMS while on phone call?

    I can feel it...coming in the aiiiir toniiiiight...hold onnnn.

    Having always used AT&T, I've never had a problem texting while on a phone call.
    "Speed has never killed anyone; suddenly becoming stationary...that's what gets you." - Jeremy Clarkson
    nikkisharif likes this.
  7. #7  
    JustMe'D's Avatar

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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by SeanHRCC View Post
    I can feel it...coming in the aiiiir toniiiiight...hold onnnn.

    Having always used AT&T, I've never had a problem texting while on a phone call.
    Oh thanks, Sean...Now I can't get Phil Collins voice out of my head....(laughing)
    Thanked by:
    dcharleyultra (11-10-2013)
    SeanHRCC and nikkisharif like this.
  8. #8  
    SeanHRCC's Avatar
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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by JustMe'D View Post
    Oh thanks, Sean...Now I can't get Phil Collins voice out of my head....(laughing)
    dat drum line...

    "Speed has never killed anyone; suddenly becoming stationary...that's what gets you." - Jeremy Clarkson
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    dcharleyultra (11-10-2013)
  9. #9  
    trmoney24's Avatar
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    Default Re: Can't SMS while on phone call?

    i CAN send/receive SMS while on the phone with verizon (while NOT on wifi, which doesn't matter). i can't send iMessages or MMS during a call, which is expected.
    Mark_Venture, must be something specific with your phone that is acting up.
  10. #10  

    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by trmoney24 View Post
    i CAN send/receive SMS while on the phone with verizon (while NOT on wifi, which doesn't matter). i can't send iMessages or MMS during a call, which is expected.
    Mark_Venture, must be something specific with your phone that is acting up.
    ^this....I can send SMS while on a call but not iMessages
  11. #11  
    Heisenberg's Avatar

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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by SeanHRCC View Post
    I can feel it...coming in the aiiiir toniiiiight...hold onnnn.

    Having always used AT&T, I've never had a problem texting while on a phone call.
    I've never had a problem using iMessage while on a phone call or using data without wifi on AT&T either. I value that a lot. Must suck to be on verizon sometimes
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  12. #12  

    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by Heisenberg View Post
    I've never had a problem using iMessage while on a phone call or using data without wifi on AT&T either. I value that a lot. Must suck to be on verizon sometimes
    The past 10 years of my cell use has been CDMA carriers, so I don't miss what I never had. I have always wanted to try AT&T because of this ability but their service is only a tad better than Sprint & T-mo in my area, so I'll just have to wait
  13. #13  
    Fausty82's Avatar
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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by nikkisharif View Post
    ^this....I can send SMS while on a call but not iMessages
    That IS a voice/data thing. SMS uses voice... but iMessages uses data.
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  14. #14  
    iKev's Avatar
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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by SeanHRCC View Post
    I can feel it...coming in the aiiiir toniiiiight...hold onnnn.
    I always thought he said, "Oh Lawd." Is it, "Hold on?"
  15. #15  
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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by iKev View Post
    I always thought he said, "Oh Lawd." Is it, "Hold on?"
    Boom! You owe me a Coke. Haha.

  16. #16  

    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by Fausty82 View Post
    That IS a voice/data thing. SMS uses voice... but iMessages uses data.
    I definitely understand that and am not complaining. I was agreeing with the post I quoted. I know full well that I'm only able to do voice and data on wifi...no biggie


    Sent from my iPhone using
  17. Thread AuthorThread Author   #17  
    Mark_Venture's Avatar
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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by trmoney24 View Post
    i CAN send/receive SMS while on the phone with verizon (while NOT on wifi, which doesn't matter). i can't send iMessages or MMS during a call, which is expected.
    Mark_Venture, must be something specific with your phone that is acting up.
    Yeah, not sure what it is.. A friend who has a VZW iPhone 5s just called me.. while on the phone we were texting back and forth. We discussed possible settings, and for grins and smiles compared his phone to mine and they were set the same.

    Not sure why my 5S is doing this.

    Then again, I'm not sure I really care to spend any more time figuring it out. I don't text for work, just email, Lync, and call... so its not a big deal. Just very surprising.

    Thanks to everyone who posted.
  18. #18  
    EmceeGeek's Avatar

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    Default Re: Can't SMS while on phone call?

    Man, that sucks! I had a 4s and 5 on Verizon and I don't recall having that problem. T-Mobile is good to me! I can text, iMessage, surf the web and everything else while I'm on a call. 4G/LTE works great! I couldn't deal with not being able to do that while on a call, especially a long call.
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  19. #19  
    SeanHRCC's Avatar
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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by iKev View Post
    Boom! You owe me a Coke. Haha.

    Well I'll be damned! Coke it is!
    "Speed has never killed anyone; suddenly becoming stationary...that's what gets you." - Jeremy Clarkson
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  20. #20  
    jsntrenkler's Avatar

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    Default Re: Can't SMS while on phone call?

    No problem sending and receiving text while on a call with GSM on T-Mobile.
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  21. #21  
    neurodave's Avatar
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    Default Re: Can't SMS while on phone call?

    You can indeed send text messages while on the phone using a Verizon iPhone, but you can't iMessage or use any other data related applications (unless on WiFi)

    However, on just about any other LTE device that Verizon offers (That isn't an iOS device) you can do both data and calls. The reason? Those generally come with 2 radios built in. Apple, however, refuses to do that for the iPhone. So as it stands, it is what it is.
  22. #22  
    chrisgaza's Avatar
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    Default Re: Can't SMS while on phone call?

    i didnt know this was possible with any phone, to sms whilst on a call. will give it a good sooner
  23. #23  
    RollTideFanGrl's Avatar
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    Default Re: Can't SMS while on phone call?

    I noticed this as well..I am with Sprint and on Wifi and couldn't send a message and on a call at the same time..Not sure what type of phone my caller had but it was weird nevertheless....As long as I was connected with Wifi with my blackberry I was able to simultaneously send text and talk..
  24. #24  
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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by RollTideFanGrl View Post
    I noticed this as well..I am with Sprint and on Wifi and couldn't send a message and on a call at the same time..Not sure what type of phone my caller had but it was weird nevertheless....As long as I was connected with Wifi with my blackberry I was able to simultaneously send text and talk..
    On my sprint iPhone I also can't send texts and talk. That's why I love having a device on att now. I don't use it much but when I need it it's nice to have

    Sent from my gameboy color
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  25. #25  
    kal-el of the house of el's Avatar
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    Default Re: Can't SMS while on phone call?

    Quote Originally Posted by Heisenberg View Post
    I've never had a problem using iMessage while on a phone call or using data without wifi on AT&T either. I value that a lot. Must suck to be on verizon sometimes
    You know, it doesn't come up often, but I do miss simultaneous voice and data without having to use wifi. That said, I don't miss never having signal in my apartment before I came to Verizon. :P
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