Hi,
I have 4g data sim in sim slot 1 and regular phone calling sim in sim slot 2.
Slot 1 is used only for data and slot 2 only for phone calls (and mms).
When I'm sharing internet connection with sim slot 1 (regardless of network) and I receive phone call in sim slot 2, the data connection disconnects in sim slot 1.
Is this a bug or a feature, does someone know?
BR,
Ville
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.
Hi
I have an issue with my dual sim S9. Sim one is on Three UK and sim two is Vodafone UK. " Dual sim always on " is enabled but when I'm connected on a call the other sim card will not accept incoming calls. The sim I'm connected to for the call will show via call waiting if another incoming call is waiting but only for that sim card. It effectively means that the other sim is offline until I end my call. Being my first dual sim phone I thought I'd be able to be notified about incoming calls on both sim cards at the same time (if I'm on sim1 and a call comes in on sim2 for example)?
The other issue I have is that the Three sim is personal and the Vodafone sim is work. When dual sim is enabled it automatically forwards calls from sim1 to sims2 and vice versa when the phone is unreachable. This means personal contacts end up leaving messages on my work voicemail and work customers end up getting through to my personal sim. (I'm also assuming my network will be charging me to forward calls to the other network)
If this is how it works then I'll have to go back to two phones as I can't mix personal and work calls like that.
Thanks.
Me also i go this problem.. This is a very FAKE DUal SIM ! it does not receive all on both sim at the same time. Huawei p20 pro receive call at the same time
I bought my red magic 5g 3 days ago and since i purchased i cant use because i have the following problems:
1st: while i made a phone call when Volte or HD calls are active, the mobile for the other party just ring for 9 second then disconnect and if the other party answers me he cannot hear my voice while I am hearing him clearly and also the call disconnect.
2nd: I have 2 active sim card, when i chose the one of the sim card to be a data sim i cant active the 5g because if i activated the 5g mode the volte/ hd also activated by default.???
3rd: the only way to made a phone call is by deactivating volte/hd and sure also deactivating 5G, because if any of them exist i cant make any phone call.
My mode: NX659J
BUILD NO.: NX659J_ENCommon_V3.13
Kernel version: 4.19.81-pref+
HARDWARE VERSION : NX659J_V1AMB
My phone carrier is Oredoo - Kuwait
5G is working
Please Help!!! I am noob in this phone???
Use the sim in SIM2 slot. I had the same call problems when the sim was placed in the SIM1 slot and I was able to fix it by switching to sim2 slot.
Poco F3
12.5.1 official stable
A bug or as intended?
Dual SIM, using one SIM for calls, the second for mobile internet. Different networks. Both networks support VoLTE, it is turned on and works fine while using same SIM for calls and LTE at the same time..
But hhen calling from the first SIM, don't have LTE connection on the second.
I understand the reason is maybe because they are on different networks, but I was still expecting otherwise.
An option "use secondary SIM for mobile data during calls" does not have any effect.
CAn someone recreate?
It's dual stand-by not dual active. In dual stand-by only 1 SIM can be fully active at a time.
That is 1 SIM can have an active call and Data, or one active call or Active Data. You can't have 2 active calls on different SIMs or 1 active call and active data on different SIMs.
Update: Adding link : https://en.wikipedia.org/wiki/Dual_SIM#Standby
Oh. Thanks for this.