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[HELP] Which Sim slot is suitable for Reliance Jio

Is it possible to use jio sim on sim slot 2 ?
I'm using moto x play dual sim indian with latest marshmallow update.
I know both slots are 4g supported .
But When I inserted jio sim in sim 2 slot a pop up msg shows if u want to use LTE then insert jio sim on slot 1.
What to do ? Sim 1 is my primary number (Vodafone)
And in network mode selection phone is not showing VOLTE ,it's just showing 4g.
Need urgent help.

sim 1
i am using jio sim in sim slot 1 and it gives upto 45mbps
you can use jio sim in sim 2 but you need to select sim 1 to 2G only and sim 2 to 4G(recommended)...
note:YOU CANNOT USE SIM1 IN 3G OR 4G UNTIL YOU CHANGE SIM2 PREFERRED NETWORK TO 2G..

mizaj said:
i am using jio sim in sim slot 1 and it gives upto 45mbps
you can use jio sim in sim 2 but you need to select sim 1 to 2G only and sim 2 to 4G(recommended)...
note:YOU CANNOT USE SIM1 IN 3G OR 4G UNTIL YOU CHANGE SIM2 PREFERRED NETWORK TO 2G..
Click to expand...
Click to collapse
Why I'm getting this pop up ?

I put jio in sim 2 n I had this pop up too. After putting it in sim 1 I got new option in cellular network called "enhanced 4g LTE mode".maybe both slots support LTE but only slot 1 supports volte.
PS: (sorry for off topic) I just got my jio yesterday n the guy at digixpress mini said it'll take 15 days for activation. I'm getting 'no service' right now.is it okay? Or should I at least get signals?

fat_geek said:
I put jio in sim 2 n I had this pop up too. After putting it in sim 1 I got new option in cellular network called "enhanced 4g LTE mode".maybe both slots support LTE but only slot 1 supports volte.
PS: (sorry for off topic) I just got my jio yesterday n the guy at digixpress mini said it'll take 15 days for activation. I'm getting 'no service' right now.is it okay? Or should I at least get signals?
Click to expand...
Click to collapse
U got signal only when sim will activated...til then it show either no service or emergency call only.

Sim 2 doesn't support VoLTE. Please put it in sim 1 to make calls using jio
Sent from my XT1562 using Tapatalk

fat_geek said:
I put jio in sim 2 n I had this pop up too. After putting it in sim 1 I got new option in cellular network called "enhanced 4g LTE mode".maybe both slots support LTE but only slot 1 supports volte.
PS: (sorry for off topic) I just got my jio yesterday n the guy at digixpress mini said it'll take 15 days for activation. I'm getting 'no service' right now.is it okay? Or should I at least get signals?
Click to expand...
Click to collapse
It's normal it will show no signal or emergency call only. Activation time depends on your state and place. if the store has more sim activation pending then your request will be get delayed.
When your application has been updated to jio by the store then you will receive an sms.
After one of that your sim will show signal .

Dual Sim not working. Only one sim works at a time

After making some changes in service menu, i am unable to use dual sim functionality. I can use only one sim slot at a time. The other one shows no network available. Regardless of which sim slot i use. In service menu sim slot 1 can be set to any preferred network but sim slot 2 is stuck in gsm only mode. Manually searched for network but no network available. Flashed latest oos 3.1.0,still the same issue. Can anyone help me with this.
Thanks in advance

Just restore whatever change you did in service menu and you should be back, you should not have played around in there from the beginning ?

pitrus- said:
Just restore whatever change you did in service menu and you should be back, you should not have played around in there from the beginning ?
Click to expand...
Click to collapse
Service menu doesn't have an option to reset to default and i don't remember exactly what changes i made. Yea i shouldn't have touched the service menu. If there's any thing else that can be done. Thanks for the quick reply

I think you changed radios to be only 3g/4g and your carriers uses the same band
Sent from my ONE A2005 using Tapatalk

fburgos said:
I think you changed radios to be only 3g/4g and your carriers uses the same band
Sent from my ONE A2005 using Tapatalk
Click to expand...
Click to collapse
I'm not sure what changes I've made but yes both providers use band 40 2300 mhz for lte. I've tried changing one of the sim to use only 2g so that both sims are on different band but still same issue.

If you are in an area where carrier uses exclusively LTE that's the problem, opt radio is dual standby it alternate between two signals in any of the combinations 2g-3g/lte but not 3g-3g or lte-lte
Sent from my ONE A2005 using Tapatalk

fburgos said:
If you are in an area where carrier uses exclusively LTE that's the problem, opt radio is dual standby it alternate between two signals in any of the combinations 2g-3g/lte but not 3g-3g or lte-lte
Sent from my ONE A2005 using Tapatalk
Click to expand...
Click to collapse
My phone was working fine few days ago. I messed up something in service menu, after that the problem started. I have set one of the sim to use 2g manually, still i can't find any signal and both carriers use 3 different bands.

Have you found any solution i am facing exact same issue after changing network band. please help

fburgos said:
I think you changed radios to be only 3g/4g and your carriers uses the same band
Sent from my ONE A2005 using Tapatalk
Click to expand...
Click to collapse
How to reset radio band i am facing same problem. I tried factory reset, restore old twrp EFS backup, clean flashing stock rom, flashing cm14.1. But problem is still there please help.

Finally......
Hello guys i solved this issue by flashing oxygen os 2.2.0 now my both sim are working fine.
Just flash oxygen os 2.2.0 which has dual SIM preference selection fix.

shan1990 said:
Finally......
Hello guys i solved this issue by flashing oxygen os 2.2.0 now my both sim are working fine.
Just flash oxygen os 2.2.0 which has dual SIM preference selection fix.
Click to expand...
Click to collapse
No wifi, no simcards detected...

Can you explain how it makes it work?

Here is a good read about such dual-sim issues (esp. posts #3,4):
https://forums.oneplus.net/threads/dua-sim-detection-problem-only-one-sim-being-detected.430976/

I'm a noob with this stuff, I read that forum and I'm still unclear... Is there a work around or am I screwed? Is it the phone/Software or my sim cards?

Here is the solution
In order to solve the problem go to service menu by dialing *#*#4636#*#* then turn off radio then select radio band 32 when it says successful, restart your phone and the problem will be solved
Say thanks at fb.com/suri131
You can contact for any other issue too

Finally solved the issue
I too faced similar issue and solved it now. I'll share my observations here.
I had 2 4g Sims Airtel and Jio. Jio for data. Both the sim's were working fine , once i went into roaming suddenly after that airtel stopped latching to network. Whatever sim slot i put my airtel sim it's not getting network if in the other slot Jio is there. I tried to use my airtel sim in other phones and it's working fine. I tried putting only airtel sim it's working fine in my OP2. I thought this may be imei problem and checked imei , my OP2 has both imei in it.
So now the fix part , for me 4g sim was working fine so tried fixing the other one in sim slot 1 i.e.. airtel.
*Install and open Shortcut Master(Lite).
*Menu->Search->Type "Engineering" -> Select "EngineerMode" from Search result (package name:com.android.engineeringmode.EngineeringMode) ->Launch.
*Click Network Set
*Click Sim Card Select -> sim 1
*Click Rat mode ->Select GSM only
*Click band mode->Select PGSM 900/1800
Now turn on Airplane mode on /off wait for a minute you should see both network.
Summary: In OP2 one slot will be 4g / other will be GSM 2g... So whichever sim is working for you don't change settings for that sim , play with the other sim for which no network is coming.

Abidbhat said:
Finally solved the issue
I too faced similar issue and solved it now. I'll share my observations here.
I had 2 4g Sims Airtel and Jio. Jio for data. Both the sim's were working fine , once i went into roaming suddenly after that airtel stopped latching to network. Whatever sim slot i put my airtel sim it's not getting network if in the other slot Jio is there. I tried to use my airtel sim in other phones and it's working fine. I tried putting only airtel sim it's working fine in my OP2. I thought this may be imei problem and checked imei , my OP2 has both imei in it.
So now the fix part , for me 4g sim was working fine so tried fixing the other one in sim slot 1 i.e.. airtel.
*Install and open Shortcut Master(Lite).
*Menu->Search->Type "Engineering" -> Select "EngineerMode" from Search result (package name:com.android.engineeringmode.EngineeringMode) ->Launch.
*Click Network Set
*Click Sim Card Select -> sim 1
*Click Rat mode ->Select GSM only
*Click band mode->Select PGSM 900/1800
Now turn on Airplane mode on /off wait for a minute you should see both network.
Summary: In OP2 one slot will be 4g / other will be GSM 2g... So whichever sim is working for you don't change settings for that sim , play with the other sim for which no network is coming.
Click to expand...
Click to collapse
it worked instantly

Abidbhat said:
Finally solved the issue
I too faced similar issue and solved it now. I'll share my observations here.
I had 2 4g Sims Airtel and Jio. Jio for data. Both the sim's were working fine , once i went into roaming suddenly after that airtel stopped latching to network. Whatever sim slot i put my airtel sim it's not getting network if in the other slot Jio is there. I tried to use my airtel sim in other phones and it's working fine. I tried putting only airtel sim it's working fine in my OP2. I thought this may be imei problem and checked imei , my OP2 has both imei in it.
So now the fix part , for me 4g sim was working fine so tried fixing the other one in sim slot 1 i.e.. airtel.
*Install and open Shortcut Master(Lite).
*Menu->Search->Type "Engineering" -> Select "EngineerMode" from Search result (package name:com.android.engineeringmode.EngineeringMode) ->Launch.
*Click Network Set
*Click Sim Card Select -> sim 1
*Click Rat mode ->Select GSM only
*Click band mode->Select PGSM 900/1800
Now turn on Airplane mode on /off wait for a minute you should see both network.
Summary: In OP2 one slot will be 4g / other will be GSM 2g... So whichever sim is working for you don't change settings for that sim , play with the other sim for which no network is coming.
Click to expand...
Click to collapse
Hey man. Installed a custom based on android 12 and i'm not sure what happened but only one sim card was working. Used msm tool to go back to oos 12 and now only one sim card shows.
Was going to try your method but the "engineeringmode" does not show up in search.
Any suggestions?

facing network issues On my One Plus Two

Hey guys i have one plus two and its running on oxygen os 3.1.0 i am facing problems on my one plus two i.e first of all i have 2 sim cards one jio 4g n other is vodafone india both sims were running perfectly on my moto g4plus previously now when i have one plus two i got it from my brother so i put jio sim on sim1 it was showing no network and then i put vodafone on sim2 then i didnt got any network unless in disabled my jio card i am getting network on my vodafone but the problem is that after making call network get lost and come back again after 2 seconds and then i can call once and i need to manully search for network on my vodafone sim if it cand find network both sims still work great on moto g4 is it problem with my device only ?
and now i have network on my sim2 vodafone and set to 2g only and wen i enable sim 1 both network get lost and its unable to register on any netwokr on siim 1 and on sim 2 it wont search!
please help me out
sorry for my english!

Jio is not fully supported on this phone, partly due to missing VoLTE support in firmware and partly because of how Jio doesn't support GSM/2G which is the standby mode for the secondary SIM as the phone doesn't support dual 4G mode. In other words, if first SIM is in 4G mode, second is forced to 2G, and this of course causes problems for Jio SIM.

Only one sim works out of the two!?

I have an OP2 OOS Version 3.5.6. My two sim slots are also filled up with two sims. So the Problem here is Only one of the Sim works at a time. Suppose if i keep the PREFERED SIM FOR MOBILE DATA as SIM 1 , the network of SIM 2 goes off and only SIM 1 is active.Vice versa . Please help me and as far as i remember i did not configure any unneccesary things. I am just noobin these stuff.TIA

Network???
May I know network an d country????

[email protected] said:
May I know network an d country????
Click to expand...
Click to collapse
In the SIM 1 the Network is JIO 4G and in the SIM 2 the network is Vodafone 4G. The country is INDIA

Same happens on lgv20 but it works fine on s7
Sent from my LG-H990 using Tapatalk

khankareem said:
In the SIM 1 the Network is JIO 4G and in the SIM 2 the network is Vodafone 4G. The country is INDIA
Click to expand...
Click to collapse
You can't use two 4G SIMs at the same time.
The SIM not set as the primary (data) SIM can only connect to a 2G network.
It's always been like this on the OP2

Spannaa said:
You can't use two 4G SIMs at the same time.
The SIM not set as the primary (data) SIM can only connect to a 2G network.
It's always been like this on the OP2
Click to expand...
Click to collapse
I mean't to say that Vodafone is 4G enabled Sim. It is not mandatory that it should work only on 4G.
Whereas JIO is a Network Where 4G is Mandatory. BTW it was working fine for the past three months without any issue.
And I even tried Having Airtel as the 1st Sim and Vodafone as the 2nd sim (Vice Versa) it doesn't work..
I thought if i Factory Reset the phone the problem would be gone, but it didn't ! Probably i have to go to a Service Centre

khankareem said:
I mean't to say that Vodafone is 4G enabled Sim. It is not mandatory that it should work only on 4G.
Whereas JIO is a Network Where 4G is Mandatory. BTW it was working fine for the past three months without any issue.
And I even tried Having Airtel as the 1st Sim and Vodafone as the 2nd sim (Vice Versa) it doesn't work..
I thought if i Factory Reset the phone the problem would be gone, but it didn't ! Probably i have to go to a Service Centre
Click to expand...
Click to collapse
If your JIO SIM is the primary SIM and Vodafone have a 2G network in your location, the second SIM should be able to connect too.
If it doesn't, something isn't right.

Spannaa said:
If your JIO SIM is the primary SIM and Vodafone have a 2G network in your location, the second SIM should be able to connect too.
If it doesn't, something isn't right.
Click to expand...
Click to collapse
Hope Going to the Service Center Should solve my Issue.

SIM Slot 2 - No Network

Hi Everybody,
I am stuck with my OP2 OOS 3.5.6.
So after i got the 3.5.6 i was not able to get VOLTE. So i found a resolution on the OP2 forum:
They advised to downgrade to 3.1.0 and then to upgrade to 3.5.6, did that and was able to get VOLTE, but another issue started, as in India Jio is a 4g service and I read somewhere that we will have to use it in SLOT 1 , so i did the same, and Vodafone in SLOT 2.
When i did that Jio works fine but there is no network for Vodafone.
After that i have tried the following:
*Selecting network manually.
*Changing the band.
*Reinstalling the OS.
*Resetting the network settings.
*Wiping out data and cache.
Nothing worked for me, can somebody suggest me something.

Rootleopard said:
Hi Everybody,
I am stuck with my OP2 OOS 3.5.6.
So after i got the 3.5.6 i was not able to get VOLTE. So i found a resolution on the OP2 forum:
They advised to downgrade to 3.1.0 and then to upgrade to 3.5.6, did that and was able to get VOLTE, but another issue started, as in India Jio is a 4g service and I read somewhere that we will have to use it in SLOT 1 , so i did the same, and Vodafone in SLOT 2.
When i did that Jio works fine but there is no network for Vodafone.
After that i have tried the following:
*Selecting network manually.
*Changing the band.
*Reinstalling the OS.
*Resetting the network settings.
*Wiping out data and cache.
Nothing worked for me, can somebody suggest me something.
Click to expand...
Click to collapse
If you remove the Jio SIM and leave the Vodafone SIM in slot 2 does it connect to the network?
Does the Vodafone network support 2g?

Spannaa said:
If you remove the Jio SIM and leave the Vodafone SIM in slot 2 does it connect to the network?
Does the Vodafone network support 2g?
Click to expand...
Click to collapse
Nope, even if I remove the Jio Sim and just have the Vodafone Sim in the second slot still it does not show up.

Rootleopard said:
Nope, even if I remove the Jio Sim and just have the Vodafone Sim in the second slot still it does not show up.
Click to expand...
Click to collapse
You only answered one question!
Does the Vodafone network support 2g?
Does the Vodafone sim work in slot 1?
Does your SIM 2 have an IMEI in settings > about phone > status IMEI info?

Spannaa said:
You only answered one question!
Does the Vodafone network support 2g?
Does the Vodafone sim work in slot 1?
Does your SIM 2 have an IMEI in settings > about phone > status IMEI info?
Click to expand...
Click to collapse
Yes Vodafone does support 2g but when I select 2g and the Sim in the slot 2 it does not work.
Yes the Vodafone does work fine with 3g and 2g network in slot 1.
Yes the Sim 2 does show the imei number under settings.

You can select vodafone in slot 1 with 2g then put jio in slot 2 and select 4g as the 1+2 has dual LTE standby so jio should work fine on slot 2

ItsmYarD said:
You can select vodafone in slot 1 with 2g then put jio in slot 2 and select 4g as the 1+2 has dual LTE standby so jio should work fine on slot 2
Click to expand...
Click to collapse
Does really op2 has dual stand by, as I am not able to get volte and I have the Jio in slot 2.
Also I contacted op2 customer care and they mentioned that it will only support one 4g and other will be only 3g.
Does it work for you if yes can you please let me know what are the settings you have.

Rootleopard said:
Does really op2 has dual stand by, as I am not able to get volte and I have the Jio in slot 2.
Also I contacted op2 customer care and they mentioned that it will only support one 4g and other will be only 3g.
Does it work for you if yes can you please let me know what are the settings you have.
Click to expand...
Click to collapse
Dual sim standby works fine for me but I'm not a Jio user.
OnePlus support are wrong, If your data sim is 4g, the other drops to 2g not 3g.
Not sure what your issue is though as I've only heard of it affecting some (but not all) Jio users.

Spannaa said:
Dual sim standby works fine for me but I'm not a Jio user.
OnePlus support are wrong, If your data sim is 4g, the other drops to 2g not 3g.
Not sure what your issue is though as I've only heard of it affecting some (but not all) Jio users.
Click to expand...
Click to collapse
You both are right they did mention 2g,my mistake that I mentioned 4g.
Yes I got a few users who mentioned the same of not getting network in the second slot. I did got a hint from somebody that it might be an issue with the update and a fix is in the pipeline. But again its just a hint and not sure.
Thanks a lot for all the help.