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During Phone call my mobile Data 4G/3G/H+ goes off

  1. Hudgurs
    Donut Feb 7, 2018

    Hudgurs , Feb 7, 2018 :
    Hi All,

    Since few days I have been noticing that whenever I make a phone call my mobile data goes off. What I mean by this is whenever I make a call this icon showing 4G or 3G or H+ at the top just disappears.

    Does it mean the data is off or is it just a feature? I am on latest open beta.

    I have observed th issue happen even on OTA as well.

    Any help appreciated!!

    Thanks
    Suhas
     

    #1
  2. G_Avee_B_Xaxb
    Jelly Bean Feb 7, 2018

    G_Avee_B_Xaxb , Feb 7, 2018 :
    i guess thats how it works, if u make a phonecall using the sim u set as default data sim then u will be temporarily disconnected to ur data connection while call is on progress. But if u make a call using the other sim that isn't the default data sim then that's another story.
     

    #2
  3. Bogeyd
    Gingerbread Feb 7, 2018

    Bogeyd , Feb 7, 2018 :
    It depends on network also what it supports. For example my provider support 3g/2g calls only so it will drop from 4g to 3g.
    If both your provider and phone supports VoLTE in your network, then also 4g would be working during the calls.
     

    #3
  4. Tapan Kumar
    Froyo Feb 8, 2018

    Tapan Kumar , Feb 8, 2018 :
    Yeah same thing happening with me. Previously if my network is on 4g and I get a call it used to drop to H+, but now not showing anything. Even wifi not working during call. After disconnecting works fine.
     

    #4
  5. kaushik98
    Donut Feb 8, 2018

    kaushik98 , Feb 8, 2018 :
    In the network 2g/3g/4g internet and calling are separate terms so when you are using internet and you receive a call automatically internet shuts down so the 4G volte comes in where internet and calling work simultaneously.
     

    #5
  6. Tapan Kumar
    Froyo Feb 8, 2018

    Tapan Kumar , Feb 8, 2018 :
    That happens if ur network supports volte so that if data session is going on it doesn't fallback to H+, but if doesn't and its normal 4g, usual data session should carry on at reduced speed in H+. It used to be like that before the update. Also the wifi is not working while in a call. So that's a bug actually
     

    #6
  7. BasileHa
    Cupcake Feb 21, 2018

    BasileHa , Feb 21, 2018 :
    Hello,
    I have the exact same issue on a 5T.
    I have 2 SIM in the phone, but all voice and data are setup to use SIM1.
    I discovered the issue while driving and using the GPS on the phone. I receive a call and so pick up using a hands free device. But I lose all data, and thus the GPS app can't download the map anymore.
    In my opinion this is really a bug, as I used to have this working on other phones (LG G4 for instance).
    Is there anyone at OnePlus who could advise on this issue? Maybe a workaround in the settings to have this working? Like forcing data on 2G/3G?
    Thanks!
     

    #7
  8. SimonRam
    Lollipop Feb 21, 2018

    SimonRam , Feb 21, 2018 :
    If you've set all voice/data to use sim 1 then it will switch off one if you're using the other.
    Enable both.
     

    #8
  9. Herve09
    Cupcake Feb 21, 2018

    Herve09 , Feb 21, 2018 :
    I once had a Samsung Galaxy S4 and the problem was the same.
    No data during phone calls, idem with my OP 3T.
     

    #9
  10. BasileHa
    Cupcake Feb 21, 2018

    BasileHa , Feb 21, 2018 :
    I am sorry if maybe my post was not clear.
    I have 2 SIM cards, one per slot. I always use the SIM from slot 1 for everything, as the one from slot 2 is more of a backup one. So I have already all setup done to use sim1 for both calls and data (and messages).
     

    #10
  11. SimonRam
    Lollipop Feb 21, 2018

    SimonRam , Feb 21, 2018 :
    I get that, but if you receive a call on sim one it will disable data on that same sim.
    If you have your Sims set up for calls/text on one and data on two then it should carry on working.
     

    #11
  12. BasileHa
    Cupcake Feb 22, 2018

    BasileHa , Feb 22, 2018 :
    Thank you very much.
    Still I don't see how this is not functionally possible, when it is working on other phone brands (I had a LG G4 with only one SIM before my OnePlus 5T, and it was working fine).
     

    #12
  13. SimonRam
    Lollipop Feb 22, 2018

    SimonRam , Feb 22, 2018 :
    Could be if it's set to volte? Both voice and data will then be vying for it..
     

    #13
  14. luigimario
    The Lab - OnePlus 6T Reviewer Feb 22, 2018

    luigimario , Feb 22, 2018 :
    I have 2 SIMs, one for calls and text and one for data. when I get a call or receive a MMS message, my data connection stops. it's kind of irritating when I'm doing something online or playing a game and lose connection.
     

    #14
  15. BasileHa
    Cupcake Feb 23, 2018

    BasileHa , Feb 23, 2018 :
    I don't have any visible setting for VoLTE. Tried some changes mentioned on the forum, but still no option visible, so most probably my carrier does not support it.
     

    #15
  16. AlaminShuchi
    Cupcake Jul 8, 2018

    AlaminShuchi , Jul 8, 2018 :
     

    #16
  17. anupritaisno1
    KitKat Jul 8, 2018

    anupritaisno1 , Jul 8, 2018 :
    Your carrier needs to support a new feature called "EAB/Presence"

    If you're in India there's not even a talk of getting the feature


    What's going on? 4g and 3g networks are incapable of having both voice and data at the same time so the phone falls back to a lower network (2g or sometimes 2.5g) to do calls

    This issue doesn't happen on reliance jio. They use the VoLTE which doesn't have the issue

    Tl;dr your carrier must support VoLTE or EAB/Presence for data during calls
     

    #17
  18. omer619
    Cupcake Sep 19, 2018

    omer619 , Sep 19, 2018 :
    I have the same sort of problem. I am using only one sim.
    while I am on call my 4G connection drops to 3G which is normal but the main problem is that while on a call even in 3G I am unable to connect to data connection which too annoying.
     

    #18
  19. Billy_Xd
    Cupcake Nov 19, 2018

    Billy_Xd , Nov 19, 2018 :
    Same sim card , same network , my iPhone X wont drop the 4G but my OnePlus 6 is loosing all data !

    I dont see any settings to avoid this. For me its definetely a software/hardware issue of OnePlus
     

    #19
  20. xer0w
    Froyo Dec 29, 2018

    xer0w , Dec 29, 2018 :
    This is 100% a bug/ issue. It's not normal behaviour for your phone to lose data connection whilst making a phone call, any decent modern smartphone should be able to handle this multitasking operation, let alone one with a Snapdragon 845!

    I have access to three different phones, a Xiaomi redmi 3S, WileyFox swift 2 and my 6T.
    ONLY the 6T drops my data connection when making a phone call, I have used the same SIM to test, so it's not the carrier. I'm pretty sure this used to work, as I make quite a lot of conference calls handsfree and often need to use Google whilst on a call.
     

    #20