Issue with Mobile data dropping during call - Samsung Galaxy S8+ Questions & Answers

Hi,
I am facing this problem for long and have not found any solution.
I am using Jio sim in SIM 1 slot and Airtel in SIM 2 slot. I am using Jio sim for 4G data connection. Whenever I receive call on any SIM the 4G data connection drop. Not sure what is the issue.
Please advice.

Always been this way, since new? How long have you had it?

JeffDC said:
Always been this way, since new? How long have you had it?
Click to expand...
Click to collapse
2 months. So should I take it as there is no solution.

My guess, and it is a guess, is that when you have a dual sim phone, and a call comes in on one line, the other line (including data) is temporarily shut down? Do you know other folks with dual sim in your area and how their phones data works with two lines when a call comes in?

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[Q] Multiple Networks at Once

Hey all! Long time lurker, first time poster. Is anyone working on running the Nexus 5 on multiple networks? Specifically, Sprint and Tmobile?
I don't see why this wouldn't work right off the bat. In my head, the radios are present and sprint uses the imei number instead of a Sim card. So shouldn't it work similar to a dual Sim phone?
My hope is to keep my $30 T-Mobile plan and add FreedomPop as my source for free minutes when in a sprint area.
I'd love to hear from everyone, my searching couldn't find anything but if your googlefu is better than mine please help!
Thanks,
Matt
TerkyTime said:
Hey all! Long time lurker, first time poster. Is anyone working on running the Nexus 5 on multiple networks? Specifically, Sprint and Tmobile?
I don't see why this wouldn't work right off the bat. In my head, the radios are present and sprint uses the imei number instead of a Sim card. So shouldn't it work similar to a dual Sim phone?
My hope is to keep my $30 T-Mobile plan and add FreedomPop as my source for free minutes when in a sprint area.
I'd love to hear from everyone, my searching couldn't find anything but if your googlefu is better than mine please help!
Thanks,
Matt
Click to expand...
Click to collapse
I never thought about this before but now that you mention it, it could be pretty cool to have access to two LTE networks if one of them is being slow. Sprint want a ICC security SIM card in the phone though, not sure if you could bypass this or use the phone without it anyway.
You need a sim card for spring LTE and voice/data on T-Mobile, and there is only one sim slot.
Sent from my Nexus 5 using Tapatalk
Thanks for the quick replies guys! I'm still very interested in it, perhaps you are right that the security Sim could be bypassed. I'd love this to gain some traction, this would be an incredibly unique feature to boast!
The phone doesn't have dual radios to even accommodate this anyway. So even if you were somehow able to activate it with a TMO SIM and on Sprint (which alone would take a ton of ROM hacking), you still physically couldn't talk to both networks. The radio would need to pick one or the other. It can't just flip flop at will, it has to set up the connection with the tower and maintain it.
I disagree. If you were to activate it on sprint, you could use it without the sprint Sim... You just would not get LTE. So technically you could activate it on Sprint (as you don't activate the phone on T-Mobile just the sim).
It would be cool if we could bypass the sprint Sim necessity.
Sent from my Nexus 5 using XDA Premium 4 mobile app
This won't work because when connected to LTE on Sprint it uses eCSFB to fall back to 1x to accept the call. This happens over the LTE connection. If you're connected to tmobile LTE, there's no way for it to tell you you have a call incoming from Sprint's network.
Sent from my Nexus 5 using Tapatalk
afazel said:
This won't work because when connected to LTE on Sprint it uses eCSFB to fall back to 1x to accept the call. This happens over the LTE connection. If you're connected to tmobile LTE, there's no way for it to tell you you have a call incoming from Sprint's network.
Click to expand...
Click to collapse
So do you think it could feasibly work as a simple menu option choice, or a widget to switch networks? I personally use Google Voice so receiving calls would happen in whichever network happens to be connected
TerkyTime said:
So do you think it could feasibly work as a simple menu option choice, or a widget to switch networks? I personally use Google Voice so receiving calls would happen in whichever network happens to be connected
Click to expand...
Click to collapse
No, you actually have to switch the SIM. Once it's registered to Sprint with a SIM, then swapping that SIM for another carrier's SIM completely switches it over. Then, when you want to use Sprint again, you put your Sprint SIM back.
afazel said:
No, you actually have to switch the SIM. Once it's registered to Sprint with a SIM, then swapping that SIM for another carrier's SIM completely switches it over. Then, when you want to use Sprint again, you put your Sprint SIM back.
Click to expand...
Click to collapse
TerkyTime said:
So do you think it could feasibly work as a simple menu option choice, or a widget to switch networks? I personally use Google Voice so receiving calls would happen in whichever network happens to be connected
Click to expand...
Click to collapse
I guess what terky meant is he will forward calls to two numbers in Google voice settings ( let's say T-Mobile and freedompop) and then whichever network will be active will receive the call. So you will still be receiving the call.
Sounds logical but it has to be tried.
I see freedompop's website now accepts meid numbers. But my concern is; will activating the nexus 5's meid number on freedompop block using the gsm functionality of the phone??
If not, it would be just terrific!!
Sent from my Nexus 5 using Tapatalk
h20wakebum said:
I disagree. If you were to activate it on sprint, you could use it without the sprint Sim... You just would not get LTE. So technically you could activate it on Sprint (as you don't activate the phone on T-Mobile just the sim).
It would be cool if we could bypass the sprint Sim necessity.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
afazel said:
This won't work because when connected to LTE on Sprint it uses eCSFB to fall back to 1x to accept the call. This happens over the LTE connection. If you're connected to tmobile LTE, there's no way for it to tell you you have a call incoming from Sprint's network.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
Vincent Law said:
The phone doesn't have dual radios to even accommodate this anyway. So even if you were somehow able to activate it with a TMO SIM and on Sprint (which alone would take a ton of ROM hacking), you still physically couldn't talk to both networks. The radio would need to pick one or the other. It can't just flip flop at will, it has to set up the connection with the tower and maintain it.
Click to expand...
Click to collapse
TerkyTime said:
So do you think it could feasibly work as a simple menu option choice, or a widget to switch networks? I personally use Google Voice so receiving calls would happen in whichever network happens to be connected
Click to expand...
Click to collapse
So with the new Android 5.1 update, which now supports dual sim, (I know guys N5 only has one sim card slot) do you think it would be easier to do this?
My idea is to get a freedompop service with the imei number, just registering the phone online and you dont physically need a sim card from them. And lets say we use another sim card ( Att, tmob, etc) to use. So basically we would have two service providers.
And from my point of view; i wouldnt need both of their services at the same time. Lets say i want to use freedompop first, and whenever it expires, I can switch to my other carrier manually.
Any thoughts on this?
Brainstorming?!?!?!

Dual SIM tethering or DATA from SIM 1 to SIM 2

Hello.
I searched without finding an answer.
I have one SIM plan coming with VOIP application working through DATA and WiFi, this application only works with its own SIM, cannot use another one because it check it.
But when i travel to others country often cannot use WiFi, and DATA roaming is very too expensive compares to buying a local SIM plan.
To those who hold a Dual SIM smartphone, can you use the DATA of one SIM from the other SIM ?
Can you activate WiFi tethering from one SIM then try to connect to it from second SIM ?
About WiFi, i thing it's not possible because cannot transmit and receive at same time.
Samsara69 said:
Hello.
I searched without finding an answer.
I have one SIM plan coming with VOIP application working through DATA and WiFi, this application only works with its own SIM, cannot use another one because it check it.
But when i travel to others country often cannot use WiFi, and DATA roaming is very too expensive compares to buying a local SIM plan.
To those who hold a Dual SIM smartphone, can you use the DATA of one SIM from the other SIM ?
Can you activate WiFi tethering from one SIM then try to connect to it from second SIM ?
About WiFi, i thing it's not possible because cannot transmit and receive at same time.
Click to expand...
Click to collapse
Hey,
Let me get this clear, what you mean is, you buy a local SIM with a data plan, and then you try to share this DATA with your current sim right?, well, answer is simple, use two phones, and tether your internet from one to another.
Hope this help you.
Stay Cool...
Hello.
Yes you right, great answer, thank you.

Dropping calls on sim2

Hi everyone,
First post so be gentle
I got my dual sim honor 8 some months ago as I dont want to carry 2 phones around with me.
My personal sim and the phone are with Three UK and my work sim is with EE.
The three sim is in slot 1 and the EE simin slot 2 and I am finding the calls keep dropping for no reason on the EE sim. I can be in an area with full signal but when the call drops I cant dial out or receive calls. The phone goes to dial but just sits with the calling screen and then fails to connect.
After I have moved it works again, its generally happening in the same places too but places that shouldnt be an issue.
Whilst the sim 2 is in this condition I can still call out from sim 1 (Three) and this problem never occurs on sim 1 (Three).
I have tried swapping the sims over but the problem remains with the EE sim. I have tried to swap the 4g priority over but the Three sim is 3g only so wont work as the secondary sim.
I have spoken with my work IT and they have replaced the EE sim but this hasnt fixed it, I have called Three tech support who have reset this and reset that and run diagnostics and say nothing wrong with the handset.
Any ideas or any one else experienced this?
Many thanks
If it's from the EE sim card, then it's from them I believe
Peterkmiles said:
Hi everyone,
First post so be gentle
I got my dual sim honor 8 some months ago as I dont want to carry 2 phones around with me.
My personal sim and the phone are with Three UK and my work sim is with EE.
The three sim is in slot 1 and the EE simin slot 2 and I am finding the calls keep dropping for no reason on the EE sim. I can be in an area with full signal but when the call drops I cant dial out or receive calls. The phone goes to dial but just sits with the calling screen and then fails to connect.
After I have moved it works again, its generally happening in the same places too but places that shouldnt be an issue.
Whilst the sim 2 is in this condition I can still call out from sim 1 (Three) and this problem never occurs on sim 1 (Three).
I have tried swapping the sims over but the problem remains with the EE sim. I have tried to swap the 4g priority over but the Three sim is 3g only so wont work as the secondary sim.
I have spoken with my work IT and they have replaced the EE sim but this hasnt fixed it, I have called Three tech support who have reset this and reset that and run diagnostics and say nothing wrong with the handset.
Any ideas or any one else experienced this?
Many thanks
Click to expand...
Click to collapse
Could it be a temporary problem on their side?
Why don't you ask EE customer service?!
PalakMi said:
Why don't you ask EE customer service?!
Click to expand...
Click to collapse
Did you even read the OP? He already did.
Sent from my Honor 8 using XDA Labs
Peterkmiles said:
Hi everyone,
First post so be gentle
I got my dual sim honor 8 some months ago as I dont want to carry 2 phones around with me.
My personal sim and the phone are with Three UK and my work sim is with EE.
The three sim is in slot 1 and the EE simin slot 2 and I am finding the calls keep dropping for no reason on the EE sim. I can be in an area with full signal but when the call drops I cant dial out or receive calls. The phone goes to dial but just sits with the calling screen and then fails to connect.
After I have moved it works again, its generally happening in the same places too but places that shouldnt be an issue.
Whilst the sim 2 is in this condition I can still call out from sim 1 (Three) and this problem never occurs on sim 1 (Three).
I have tried swapping the sims over but the problem remains with the EE sim. I have tried to swap the 4g priority over but the Three sim is 3g only so wont work as the secondary sim.
I have spoken with my work IT and they have replaced the EE sim but this hasnt fixed it, I have called Three tech support who have reset this and reset that and run diagnostics and say nothing wrong with the handset.
Any ideas or any one else experienced this?
Many thanks
Click to expand...
Click to collapse
try only using EE sim in slot one and check whether issue persists?
miststudent2011 said:
try only using EE sim in slot one and check whether issue persists?
Click to expand...
Click to collapse
Try and see
PalakMi said:
Why don't you ask EE customer service?!
Click to expand...
Click to collapse
Hi,
I have and they advise no fault, they have even replaced the sim card to rule this out.
Just try with a 3rd operator on both SIM slots: that will rule out hardware problems.
As for 3G/4G, operators use different bands, but you shouldn't have any problem.

XZP Dual Sim Stability

i hope i can resolve my current issue asap.
im using dual sim for personal & work, but i keep facing this issue of active network being totally cut for abt 2-3 seconds frequently (every few mins esp when streaming media.
cellular, calls and sms on sim1 4G+ network.
sim2 3G (work sim) activated mainly for the sake of having incoming calls.
so when i play music via bluetooth or using youtube playlists, i always get "paused" and i have to press to continue. it sucks when i need to navigate too, keeps searching for gps. wasnt like this when i didnt use dual sim.
any advise? TIA
bump for awareness
I use 1 sim primarily and used another sim when I was on vacation a few weeks ago. Both were active (my primary one on roaming) and had no problems. Have you tried a factory reset? Or perhaps a software repair?
iArvee said:
I use 1 sim primarily and used another sim when I was on vacation a few weeks ago. Both were active (my primary one on roaming) and had no problems. Have you tried a factory reset? Or perhaps a software repair?
Click to expand...
Click to collapse
thats a last resort, software is ok thus far. only happens when i activate both sims as mentioned.
bump for awareness
bump for awareness

Weird network problem - signal drops

Hi everyone,
has any of you ever had network problems, as can be seen in the video?
For a few days now both network connections have been breaking down when I try to make a call. But that doesn't always happen. Sometimes I can make 10 calls in a row and everything is fine, and sometimes nothing works. It doesn't matter which SIM I use to make the call. The problem occurs with both cards. If that happens, then either directly when dialing a number, or immediately after hanging up.
I've never seen anything like this. And I wonder if it's the software, the SIM tray, one of the cards or the network operator itself.
Can anybody please help me? This is quite annoying.
PS: Sorry for the German settings. „Keine SIM-Karte“ = No SIM card // „Dienst nicht verfügbar“ = no service
Clear sim tool kit data
Network reset
Clear system cache
Make sure the access point names are correct
blackhawk said:
Clear sim tool kit data
Network reset
Clear system cache
Make sure the access point names are correct
Click to expand...
Click to collapse
Thanks for the advice, but this didn't help.
I did these 4 steps, but the first time I tried to call, both connections dropped again. Can there be a hardware problem at all? Looks more like a software issue, doesn't it?
mathias.ngr said:
Thanks for the advice, but this didn't help.
I did these 4 steps, but the first time I tried to call, both connections dropped again. Can there be a hardware problem at all? Looks more like a software issue, doesn't it?
Click to expand...
Click to collapse
The sim card, the usual hardware suspect...
They can be damaged by ESD; handled like a stick of ram.
ESD may not manifest itself for weeks, months even years. Insults are cumulative.
It's not expensive but it is a pain, try to not damage it as it left the plant A-OK.
Just like ram sticks poor handling is the cause of almost all sim card failures.
blackhawk said:
The sim card, the usual hardware suspect...
They can be damaged by ESD; handled like a stick of ram.
ESD may not manifest itself for weeks, months even years. Insults are cumulative.
It's not expensive but it is a pain, try to not damage it as it left the plant A-OK.
Just like ram sticks poor handling is the cause of almost all sim card failures.
Click to expand...
Click to collapse
So, am I getting you right? I just go to the store and have the SIM card replaced and everything should work again?
I've tried a few things now. If I set SIM 2 to GSM, everything is fine. The connection doesn't break. I believe it is the 3G connection. And that's why these crashes could occur when I make calls. SIM 2 doesn't support VoLTE, so it switches to 3G.
EDIT: I've tried different things now. I swapped SIM 1 and 2 back and forth. I also used my two SIM cards alternately with a third SIM card. The problem persists. Could a hard reset help or should I send the device for repairs straight away?
Same problem here. Setting sim 1 to GSM only, and sim2 to LTE fixed my problem for a while. This has something to do with dual sim handling.
jerrydrake said:
Same problem here. Setting sim 1 to GSM only, and sim2 to LTE fixed my problem for a while. This has something to do with dual sim handling.
Click to expand...
Click to collapse
This is soooo anoying. Have you had this problem for a long time or did it only come recently? Could this have something to do with a recent update?
I bought the phone a month ago, and while I was setting it up it received 5 updates including android 11. So I have no experience prior to Android 11.
jerrydrake said:
I bought the phone a month ago, and while I was setting it up it received 5 updates including android 11. So I have no experience prior to Android 11.
Click to expand...
Click to collapse
Damn, same here.
Have you tried cleaning the sim cards with rubbing alcohol?
Then put them back without touching the metal contacts.
Didgesteve said:
Have you tried cleaning the sim cards with rubbing alcohol?
Then put them back without touching the metal contacts.
Click to expand...
Click to collapse
No, I don't see any point in doing that. I swapped the SIM cards and even tried other cards and the problem was still there. If something had to be cleaned, it would be the SIM tray. But as already written, there are no disconnections when a SIM is operated in 2G. I think that rather means that it is a software problem.
jerrydrake said:
I bought the phone a month ago, and while I was setting it up it received 5 updates including android 11. So I have no experience prior to Android 11.
Click to expand...
Click to collapse
I have this same problem with phone dropping off the network. For me it started after the first Android 11 update. I have full signal levels at home but if I try to make a call signal level for both sim cards drops and I get a message that mobile network is not available. Doesn't happen always but pretty often.
I'm pretty sure it has something to do with how the phone handles dual-sim operations...
Juu_5o said:
I have this same problem with phone dropping off the network. For me it started after the first Android 11 update. I have full signal levels at home but if I try to make a call signal level for both sim cards drops and I get a message that mobile network is not available. Doesn't happen always but pretty often.
I'm pretty sure it has something to do with how the phone handles dual-sim operations...
Click to expand...
Click to collapse
I am glad, I am not the only one, who is facing this problem. I already thought, I have to send my phone back. So, we have to wait for a fix.
Must be patient. There is also bluetooth problem(disconnecting from devices). It looks like they were too fast with android 11.
Since the last update(.159), i also have the drop out problem. Starting to feel sorry for buying it...
So, let's hope the new .222 update, which has just arrived, will fix this.
EDIT: no, it doesn't.
mathias.ngr said:
So, let's hope the new .222 update, which has just arrived, will fix this.
EDIT: no, it doesn't.
Click to expand...
Click to collapse
Yeah, I even had to restart after the update, in order for the second SIM to become active...
Edit - and the problem is even worse. Almost after every incoming call I lose signal to both sims...
Edit II - I wanted to try to switch sim 2 to gsm only network, and noticed that there's 5G available for it too, after the update. Before that there wasn't such an option....
bo6o said:
Yeah, I even had to restart after the update, in order for the second SIM to become active...
Edit - and the problem is even worse. Almost after every incoming call I lose signal to both sims...
Edit II - I wanted to try to switch sim 2 to gsm only network, and noticed that there's 5G available for it too, after the update. Before that there wasn't such an option....
Click to expand...
Click to collapse
Since I use the second SIM only for business calls, I have already set it to GSM only. Today I noticed that I still have outages. So apparently to force 2G is no longer of any use. :/
About 5G: It has been active on my device since I got it. Perhaps there was an update on this from your carrier.
bo6o said:
Since the last update(.159), i also have the drop out problem. Starting to feel sorry for buying it...
Click to expand...
Click to collapse
same here and the problem is very annoying cause my everyday job is in a car. is 100% software problem. 650€ for a phone you can't use it as a phone.
Hi, I don't have signal drop but yes the WiFi drip in my room, I had a xz premium and never happened on it

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