Develop Bugs

[Q] S4 mini 9192 not switching data between sims correctly

i have been experiencing several problems with S4 mini 9192 since i bought it one month back and one of these is that the phone does not switch data between the 2 sims correctly.
to have the data work correctly on any sim, all the below must be done
1-select the sim you want to use for data in sim card manager/data service network
2-have the same sim configured as gsm/wcdma (auto connect) on connections/more networks/mobile networks/network mode
when you select option one, the phone tries to perform task 2 too, but fails, thus the data sim is left in "GSM only mode" and will only have edge data, never connecting to HSPA/ 3G.
here is what i have to do each time to switch data from Sim-1 to Sim-2 (screenshots attached)View attachment Screenshots.zip
Screenshot 1- you will notice data is set for sim 1 and HSPA is active
Screenshot 2- select sim 2 for data
Screenshot 3- the phone will disconnect data on sim 1 to switch
Screenshot 4-phone will try to set sim 2 as "gsm/wcdma (auto connect)"
Screenshot 5- but gives alert message and fails
Screenshot 6- sim 1 is still on "gsm/wcdma (auto connect)" and the data connection for sim 2 is only edge
Screenshot 7- Sim 2 is still on "gsm only" and does not connect on hspa no matter how long you wait
Screenshot 8- for data on sim 2 to work properly, first change sim 1 to gsm only
Screenshot 9- then change sim 2 to "gsm/wcdma (auto connect)" and wait for 5 seconds, the phone will connect on HSPA .. success
now my big question is, does this happen to everyone with s4 mini 9192, or is it just me??
by the way, this occurs on both my Egypt stock firmware and the j2 india firmware i just flashed.

i tested a friend's Galaxy Mega 5.8 Duos, and the phone performs both steps by itself, with no need to perform the 2nd step manually.

fmohiy said:
now my big question is, does this happen to everyone with s4 mini 9192, or is it just me??
by the way, this occurs on both my Egypt stock firmware and the j2 india firmware i just flashed.
Click to expand...
Click to collapse
I have had the same problem with my model that I bought in Australia. Your solution worked well for me as this is one frustration that I've been blaming on the network rather than the phone for the past week (because I was ignoring the error messages). I would hope a software update is in the works to fix this issue as it will get quite annoying in time.

I have the very same issue, plus the second sim slot only work in GPRS, and I try 4 rom before getting block by ****ing knox problem.

Sorry to dig this out but i havent found any answer to this yet.
is there any way to get a widget or a script or anything so that one can easily switch data connection from one sim to the other by one click? Or even automatically depending on which sim is in its home network?
This would be awesome as i'm hopping across the border twice a day and switching data connection all the time is a pain in the a**.
Thanks a lot for any answers!

I am also looking for answers for this.
Out on the site I work at they only have 3G towers but I have no data access on my work phone so I need to use my personal sim for checking email, then switch back so I can use work phone again.

Known issue on the phone it sucks
Sent from my GT-I9192 using Tapatalk

fmohiy said:
i have been experiencing several problems with S4 mini 9192 since i bought it one month back and one of these is that the phone does not switch data between the 2 sims correctly.
to have the data work correctly on any sim, all the below must be done
1-select the sim you want to use for data in sim card manager/data service network
2-have the same sim configured as gsm/wcdma (auto connect) on connections/more networks/mobile networks/network mode
when you select option one, the phone tries to perform task 2 too, but fails, thus the data sim is left in "GSM only mode" and will only have edge data, never connecting to HSPA/ 3G.
here is what i have to do each time to switch data from Sim-1 to Sim-2 (screenshots attached)View attachment 2336218
Screenshot 1- you will notice data is set for sim 1 and HSPA is active
Screenshot 2- select sim 2 for data
Screenshot 3- the phone will disconnect data on sim 1 to switch
Screenshot 4-phone will try to set sim 2 as "gsm/wcdma (auto connect)"
Screenshot 5- but gives alert message and fails
Screenshot 6- sim 1 is still on "gsm/wcdma (auto connect)" and the data connection for sim 2 is only edge
Screenshot 7- Sim 2 is still on "gsm only" and does not connect on hspa no matter how long you wait
Screenshot 8- for data on sim 2 to work properly, first change sim 1 to gsm only
Screenshot 9- then change sim 2 to "gsm/wcdma (auto connect)" and wait for 5 seconds, the phone will connect on HSPA .. success
now my big question is, does this happen to everyone with s4 mini 9192, or is it just me??
by the way, this occurs on both my Egypt stock firmware and the j2 india firmware i just flashed.
Click to expand...
Click to collapse
Thanks for posting this, finally i can have 3g on sim2!

Does the I9192 supports 3g sims on both slots?

I want to buy the I9192 and i wanted to know if it supports 2 sims that work only on 3g networks?
Or the second sim slot is only 2g?
Thanks!

Both the sim slots can be used for 3g reception.. but only one sim can be 3g at one tym.. i.e either sim 1 or sim 2 can be 3g at any given time...

by 3g you mean that i can use data only from 1 sim?
I have 2 sims from a networks that uses HSDPA 850 / 2100 - would both of the sims will work at the same time? (I don't need data on both of them, only on 1 sim, but i need reception for calls & sms on both sims)
Will it work?
Thanks!

Yes. Only one sim will be used for the data connection.

sub_zero said:
by 3g you mean that i can use data only from 1 sim?
I have 2 sims from a networks that uses HSDPA 850 / 2100 - would both of the sims will work at the same time? (I don't need data on both of them, only on 1 sim, but i need reception for calls & sms on both sims)
Will it work?
Thanks!
Click to expand...
Click to collapse
yes, both sim cards can recieve calls/sms at any given point,
but for data, only one sim: either sim 1 or sim 2 ( whichever is choosen by you)

your answer!
sub_zero said:
I want to buy the I9192 and i wanted to know if it supports 2 sims that work only on 3g networks?
Or the second sim slot is only 2g?
Thanks!
Click to expand...
Click to collapse
I made all possible tests, it will only work 3g or hsdpa data speeds on slot 1. if you switch your data service network from SIM1 to SIM2 it will only work 2G, if you go back to SIM1 you will have 3G normally again.
hope this helps. BTW, in the Manual or user guide for this phone this feature is not clearly explained.

alexcaco said:
I made all possible tests, it will only work 3g or hsdpa data speeds on slot 1. if you switch your data service network from SIM1 to SIM2 it will only work 2G, if you go back to SIM1 you will have 3G normally again.
hope this helps. BTW, in the Manual or user guide for this phone this feature is not clearly explained.
Click to expand...
Click to collapse
no its not lyk dis...
I use Vodafone in sim 1 slot, use 2G
and reliance 3G in slot 2
No Problem at all...

both sim's works on 3g
alexcaco said:
I made all possible tests, it will only work 3g or hsdpa data speeds on slot 1. if you switch your data service network from SIM1 to SIM2 it will only work 2G, if you go back to SIM1 you will have 3G normally again.
hope this helps. BTW, in the Manual or user guide for this phone this feature is not clearly explained.
Click to expand...
Click to collapse
I confirm: both sims works on 3g but only one at a same time.
You have to mannually select which sim will use mobile data on settings > my device > sim manager > data service network.
If you choose sim2 for data, sim 1 will automattically switch to 2g network and sim 2 works on 3g.
Make sure your data provider has 3g coverage on your area.
hth

check my post on http://forum.xda-developers.com/showthread.php?t=2490419 for the solution.

Well both work in 3G but only the slot 1 works on HSDPA/HSDPA+ the second slot is locked into GPRS mode and I have experienced this behaviour on 4 rom before knox samsung proctection avoid me to flash my phone as I want.

About Dual Sim - Second Sim For 2G - Edge Connection

Hi,
Is there any option, hacks, settings or customised rom or something for second sim card's 2G connection (it says supports edge connection) ?

Second sim does not support any data connection only 2g calls, only sim 1 supports data enabled
Sent from my ASUS_Z00AD using Tapatalk

Second sim surely can support data but will need some deep hack because you will first enable modem to allow data connection and second at OS level some tweaks.

Thanks for your suggestions but anything else?
There must be a real solution, i'm gonna search deeply about this.
Thanks anyway

dual sim standby - both 3g/4g ?

So I've read in a few reviews it's a dual sim standby (both sims are in standby for a phone call) and both of them are capable of 3g/4g at the same time?
anyone know?
reason I ask is in my country the 2g bands are closed so can't use any other dual sim phone (all of them force second sim to be on 2g)

I don't think both of them are capable of 4G for the simple reason 2 SIM from 2 different network providers = 2 IP address, and you need to know it's complex to make usable 2 IP address in the same time (MPTCP).
Then like on the OnePlus 2, you can only use one SIM for data and the other for phone calls/SMS/MMS in the same time.

The only phone that I am aware that is able to do 4g on one sim and 3g on the other is the mi5.
I am also keen to know if we can do the same on the one plus 3. I live in Singapore and 2g will be deactivated soon.
Sent from my X9009 using XDA-Developers mobile app

I'm not expecting the phone to use data on both. i'm more concerend about just being on standby for phone/msg on 3g (or 4 if possible). Like using your phone blocking data on the second sim. I don't see why it's so technologically hard. 2g is soon to be gone evrywhere

I have tested Mi5Pro and it have first sim 2G/3G/4G and the second sim 2G/3G simultaneously (dual sim stand-by).
I have read in a review than OP3 also. I will receive mine next monday, i will test ...

thanks a lot. anyone else can confirm ?

I can confirm .. i have received my op3 yesteday and it is 2G/3G/4G on sim1 and 2G/3G on sim2 simultaneously. Sim2 is only for calls and messages.
Like OP2 and other phones, it is possible to swap sims and in this case, sim2 is 2G/3G/4G with data and sim1 only 2G/3G for calls and messages.
I confirm also that op3 is dual sim stand-by and not dual sim active.

Le_Matriciel said:
I can confirm .. i have received my op3 yesteday and it is 2G/3G/4G on sim1 and 2G/3G on sim2 simultaneously. Sim2 is only for calls and messages.
Like OP2 and other phones, it is possible to swap sims and in this case, sim2 is 2G/3G/4G with data and sim1 only 2G/3G for calls and messages.
I confirm also that op3 is dual sim stand-by and not dual sim active.
Click to expand...
Click to collapse
So your SIM 1 is on 4G/LTE and SIM 2 can receive calls and text in 3G mode?

Yes but when call is made on SIM2, data on SIM1 is interrupted (dual stand-by)

Le_Matriciel said:
Yes but when call is made on SIM2, data on SIM1 is interrupted (dual stand-by)
Click to expand...
Click to collapse
Is this by design? That seems like a very frustrating limitation. I would be okay with data services flipping over to SIM2 while on the phone there.
I also seem to have a problem of the OP3 kicking down from LTE to HSPA when I make a phone call.
Any ideas?

appletalk said:
Is this by design? That seems like a very frustrating limitation. I would be okay with data services flipping over to SIM2 while on the phone there.
I also seem to have a problem of the OP3 kicking down from LTE to HSPA when I make a phone call.
Any ideas?
Click to expand...
Click to collapse
Yes, it is designed like this, like all dual sim except Asus ZenFone 2, Galaxy S4 Duo and few other models.
LTE networks has not "phone circuits" and call are made in 3G (phone connect in HSPA during call). This is for all LTE phones.
LTE calls are possible with VoLTE protocol witch is IP voice communications and not voice circuit.
For using VoLTE, the phone need compatible with this protocol AND operators needs to activate this functionality.

Le_Matriciel said:
Yes but when call is made on SIM2, data on SIM1 is interrupted (dual stand-by)
Click to expand...
Click to collapse
While you are using data on SIM1, will an incoming call on SIM2 ring on the phone or will the call be treated as though the phone is off-network and be directed to voicemail?

rickhuizinga said:
While you are using data on SIM1, will an incoming call on SIM2 ring on the phone or will the call be treated as though the phone is off-network and be directed to voicemail?
Click to expand...
Click to collapse
incoming call on SIM2 will ring.
Both the SIMS can receive calls no matter which of them are used for mobile data.
---------- Post added at 10:18 PM ---------- Previous post was at 10:01 PM ----------
spritey176 said:
So I've read in a few reviews it's a dual sim standby (both sims are in standby for a phone call) and both of them are capable of 3g/4g at the same time?
anyone know?
reason I ask is in my country the 2g bands are closed so can't use any other dual sim phone (all of them force second sim to be on 2g)
Click to expand...
Click to collapse
It is dual sim standby and both the sims are in standby for a phone call. Both of them are capable of 4G/3G/2G but NOT at the same time. 4G can be used only in one sim slot at a time. It can be set by going to settings > SIM cards> Preferred SIM for Cellular data. Whichever SIM you choose here will have 4G option. It can be changed from settings>Cellular networks > your SIM card > Preferred network type. (4G or 3G or 2G). The other SIM can have either 3G or 2G but there is no option to choose it. The only way is to click on 'Network operators' option from Cellular networks menu and choose a 2G or 3G service. Hope it helps.

I get 4g on each sim but you have to pick one for data but both are 4g

So if I have 2 sims, one for calls with 6gb 4g and one for data with 15gb 4g, when I finish the 6gb on 1st sim I can switch the data to the other sim via software? Thanks

Your right you can

Important about dual active
Le_Matriciel said:
Yes, it is designed like this, like all dual sim except Asus ZenFone 2, Galaxy S4 Duo and few other models.
LTE networks has not "phone circuits" and call are made in 3G (phone connect in HSPA during call). This is for all LTE phones.
LTE calls are possible with VoLTE protocol witch is IP voice communications and not voice circuit.
For using VoLTE, the phone need compatible with this protocol AND operators needs to activate this functionality.
Click to expand...
Click to collapse
This is true, but you can also add to the list of "Dual Active" phones all Huawei premium phones:
Mate 7, Mate 8, Honor 6, and probably Honor 7 and 8.
They all have DUAL ACTIVE SIM CARDS, which means that you can have a call on SIM-1 and get a waiting call on SIM-2, then you can answer the call and swap between the two active calls!! I even tried calling SIM-1 from SIM-2 and it was actually ringing!!
Also more importantly, when using data on SIM-1, you can make or receive a call on SIM-2 without interrupting data.
That's pretty amazing, but with a major drawback (at least for me, it is): 3G/4G service is only accessible on SIM-1 slot!! The SIM card in slot-2 will always be 2G and would never ever access 3G/4G networks
This is bad because I travel a lot, and I always need to be able to switch data from SIM-1 to SIM-2 and vice versa. The only option I have is to physically swap SIM cards between slots, which actually ruins the whole concept of having DUAL SIM mobile
My guess is that they are actually using two separate modems, each one is dedicated to one of the two SIM slots, and only one of them supports 3G/4G connectivity.

TheLoverMan said:
Your right you can
Click to expand...
Click to collapse
so, you are saying that both sims are 3G/4G capable, but can be used for data one at a time, and can be switched anytime via settings ?

I have a questión, so if a dual sim phone have 3g/4g capabilities on both sims, is there a way to make like a failover setup such as if sim1 looses data the phone switches to sim2 data automatically and viceversa?

I have problem in my one plus 3 network issues both SIM are not working properly both SIM search for network frequently when I switched data no network can anyone give solution I tried all rebooting, factory reset, searching network manually.

Is VoLte Supported on OnePlus 3 Stock 3.2.1 ?

VoLte from different service providers are going to be rolled out in India very soon. Is our Phone support VoLte feature?
Or shall we wait for another software update?
Any Custom Rom support VoLte feature at present ?
Pls reply

its supported in OOS 3.2.1
using JIO

I activate it (T-MOBILE Germany) and I can't find the settings in the menu [emoji20]
Any idea where to find?
Sent from my ONEPLUS A3003 using XDA-Developers mobile app

yes, but may depend on carrier, and it's worked since before 3.2.X for me
USA T-Mobile VoLTE works fine.
I've heard USA AT&T VoLTE isn't working yet though. Outside the USA don't know.

Not only is it supported, but you get this ridiculously stupid VoLTE icon in your status bar when you're connected! Hooray!

Yes its supported. Using JIO

Angadadlakha said:
Yes its supported. Using JIO
Click to expand...
Click to collapse
Sorry for off topic but which launcher are you using? If its the stock oneplus launcher then how did you change all the icons??

neildalal said:
Sorry for off topic but which launcher are you using? If its the stock oneplus launcher then how did you change all the icons??
Click to expand...
Click to collapse
Stock Launcher
Long press anywhere on the screen you will get 3 options Wallpapers Widgets Customize.
Go to Customize Swipe right Twice to get to the icon pack changer. The icon pack in the Screenshot is Rifon.

Angadadlakha said:
Stock Launcher
Long press anywhere on the screen you will get 3 options Wallpapers Widgets Customize.
Go to Customize Swipe right Twice to get to the icon pack changer. The icon pack in the Screenshot is Rifon.
Click to expand...
Click to collapse
Wow I never knew this existed. Thanks a lot my friend!

hrishi21007 said:
its supported in OOS 3.2.1
using JIO
Click to expand...
Click to collapse
how are u able to use Jio sim on oneplus 3...I also want it...can you suggest to get one??

mannu_in said:
how are u able to use Jio sim on oneplus 3...I also want it...can you suggest to get one??
Click to expand...
Click to collapse
Currently you can buy a LYF phone and you will get a JIO connection with it. But it will be locked to that specific handset.
To get a Sim free from handsetlock you need a employee/retailer demo sim.

Angadadlakha said:
Currently you can buy a LYF phone and you will get a JIO connection with it. But it will be locked to that specific handset.
To get a Sim free from handsetlock you need a employee/retailer demo sim.
Click to expand...
Click to collapse
HI .. are u facing any dusconnection. I have put vodafone 4g in sim slot 1 and jio in slot 2 and jio was disconnecting and reconnecting frequentry .. then i inserted jio in slot 1 and vodafone in slot 2 and now the network drop to zero after couple of hours that is network goes to no service after couple of hours and then i need to manually enable it to get the signal back. Are you facing this issue? In which slot are u using jio sim ? and are u using 2 sims i.e in both slot 1 and 2 ?

fatekills said:
HI .. are u facing any dusconnection. I have put vodafone 4g in sim slot 1 and jio in slot 2 and jio was disconnecting and reconnecting frequentry .. then i inserted jio in slot 1 and vodafone in slot 2 and now the network drop to zero after couple of hours that is network goes to no service after couple of hours and then i need to manually enable it to get the signal back. Are you facing this issue? In which slot are u using jio sim ? and are u using 2 sims i.e in both slot 1 and 2 ?
Click to expand...
Click to collapse
Im using idea on Sim 1 and Jio Sim 4G on sim 2
Make sire you put the network type to lte on JIO and gsm on the other one.
If you choose LTE for your other sim, since the handset can only support lte fir 1 sim at a time it puts the JIO sim into gsm. And JIO has only LTE band. No 2g or 3g bands. Hence the network drops.

Angadadlakha said:
Im using idea on Sim 1 and Jio Sim 4G on sim 2
Make sire you put the network type to lte on JIO and gsm on the other one.
If you choose LTE for your other sim, since the handset can only support lte fir 1 sim at a time it puts the JIO sim into gsm. And JIO has only LTE band. No 2g or 3g bands. Hence the network drops.
Click to expand...
Click to collapse
Hi.. are you telling me to select Preferred netwrok type as 3g for other sim and lte for jio sim ? and did u see any network issue like signal going completely off ( no service) for ur jio sim?

fatekills said:
Hi.. are you telling me to select Preferred netwrok type as 3g for other sim and lte for jio sim ? and did u see any network issue like signal going completely off ( no service) for ur jio sim?
Click to expand...
Click to collapse
As far as i know. When you choose the mobile data sim in sim cards menu. The option of network type disappears from the settings of the other one. For example. Please look at the attached screenshots.

Angadadlakha said:
As far as i know. When you choose the mobile data sim in sim cards menu. The option of network type disappears from the settings of the other one. For example. Please look at the attached screenshots.
Click to expand...
Click to collapse
Yes thats true.. since u told me to set lte for jio sim and gsm for other sim i was confused. At a time only one data connection will be enabled. so i guess the frequent drop is not related to that. Do u face any issue with network drop? im using jio in slot 1 and after couple of hours the network drops and it goes to no network.

fatekills said:
Yes thats true.. since u told me to set lte for jio sim and gsm for other sim i was confused. At a time only one data connection will be enabled. so i guess the frequent drop is not related to that. Do u face any issue with network drop? im using jio in slot 1 and after couple of hours the network drops and it goes to no network.
Click to expand...
Click to collapse
The data drops sometimes but comes back usually within seconds. If it doesnt i put on airplane mode and take it off again. That works. But its too rare. I use idea in slot 1 jio in slot 2

Angadadlakha said:
The data drops sometimes but comes back usually within seconds. If it doesnt i put on airplane mode and take it off again. That works. But its too rare. I use idea in slot 1 jio in slot 2
Click to expand...
Click to collapse
So the set up you have is idea in sim one.but the network u have selected is 3g or 2g.. (which gets disabled once u enable your jio sim)and u hav jio sim in slot 2 with lte enabled. Correct ?

fatekills said:
So the set up you have is idea in sim one.but the network u have selected is 3g or 2g.. (which gets disabled once u enable your jio sim)and u hav jio sim in slot 2 with lte enabled. Correct ?
Click to expand...
Click to collapse
Yes i chose 2g/3g on idea sim before i put in the jio sim.

Hmm i tried that but ..setting 2g for vodafone sim in slot 1 and jio in slot 2.. but it starts disconnecting and reconnecting again and again.
---------- Post added at 03:03 PM ---------- Previous post was at 03:03 PM ----------
Angadadlakha said:
Yes i chose 2g/3g on idea sim before i put in the jio sim.
Click to expand...
Click to collapse
Hmm i tried that but ..setting 2g for vodafone sim in slot 1 and jio in slot 2.. but it starts disconnecting and reconnecting again and again.