Dual SIM Dual Standby or Dual SIM Dual Active? Perplexed? We get many queries from our readers asking the difference between Dual SIM Dual Standby and Dual SIM Dual Active. Today in this blog post we will cover what is what and which one is a better option for you.

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Dual SIM Dual Standby

These types of dual SIM devices are abundant in Indian Android Market and are present over a wide price range. As the name suggest these type of phones support both SIMs in Standby mode. That is to say until you are not using any of your SIM cards, both are active and on standby. But once you start using Either SIM1 or SIM2 the other one becomes inactive. If someone calls you on the other SIM he will hear a not reachable message from your service provider. (Sometimes blank tone or nothing). This can be a graver problem if you use your secondary SIM to make long duration calls, Cause it will render your primary SIM inactive and make you not reachable.

A simple way to get around this problem is by activating call forwarding on one SIM for another. when you are talking on one SIM your other SIM will be unreachable, so if any one calls on the inactive SIM, the call will be routed to you and you will get the option to put the ongoing call on hold and attend it if its Urgent. Although it will cost you money, in accordance with your celluar providers tarrif plan, if you choose to attend it.

The Dual SIM standby devices which are obsolete now, allowed users to only opt for one SIM even in the standby mode. If you want to use the other SIM in these phones you have to manually opt for the other SIM and restart your phone.

These Phones use same transceiver for both SIMs and thus consume less battery power compared to Dual SIM Dual Active mobiles. Some phones with Dual Standby also report of faulty network connections. When you are using 3G or 2G connection you might not get proper connection or no connection on the other SIM. But this is rare and most probably this won’t be the problem you would have to face.

Dual SIM Dual Active

As you would have guessed by now most Dual SIM Dual Active phones keep both SIMs active at all time. When you are taking calls on one SIM, you will still receive calls and messages on the other. You will get the option to put the first call on Hold and attend the call on the other SIM.

Dual Active phones have two separate Transceivers and in some cases diff processor cores for both SIM and this leads to more power consumption. This has to be aided by use of larger battery capacity. Few years back Chinese phones with Dual Active features used to come with double battery. Samsung Galaxy Ace Duos S6802 is an example of Dual Active smartphone .

Dual SIM phones have numerous advantages. You can choose cost effective services of two cellular service providers, you can keep two SIM cards from diffrent coverage areas and use them while on the move and you can save more contacts using the memory from both SIM cards. But if you are using a Dual Standby device make sure you choose the services on both SIM wisely. If you use a SIM card for cheaper call rates during day time hours it would be preferable that it be your primary SIM so that you are reachable when required. Though Dual Active is more admirable, unfortunately Dual active options are not very abundant

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The Author spent a significant chunk of his formative years resisting technology. He now keeps an eye on where the world is heading to, and drives a passive pleasure from this indulgence. His passion to write, learn and improve drives him each day. When his day ends, he enjoys the pleasant languor and detoxifies with family. You can connect with him on and Twitter

46 COMMENTS

  1. Hi,

    Can you confirm which of the android phones are dual sim active from below:-

    Lava iris 504q
    Micromax canvas a240 doodle

  2. sir i want to purchase……dual active phone only not dual standby….so kindly suggest me sir as early as possible list for dual active phones
    …am waiting for u….

    • there are very less options on dual active phones in india, all the latest android phones are dual standby – you might get one from samsung.

  3. Hi,
    I dint actually read the difference between Dual Sim Active and Dual Sim Standby as i knew it before hand.
    Havent Actually read any good List of phones with Dual Sim Active options, Someone here asked about Dual Sim active phone name but no1 replied as well. I dont Understand Whats wrong with these tech Savy Guys who Give Importance to Dual Sim Phones but Cannot Biffercate Dual Sim Active Phones and Mention name of it….It is few every one knows its few but atleast mention one name.,,
    Any which ways i would Mention Few names which i feel is Dual Active Phones or Hybrid for name sake which i know.

    1. Samsung Galaxy Core GT-I8262 ( Source Samsung Site)
    2. Samsung Galaxy S Duos 7562 (source Samsung Site)
    3. Samsung GAlaxy Y Duos (Hybrid Dual SIM) can talk on one sim use internet on other….Source Samsung Site….Not sure about reception of calls on both phones.
    4. Samsung Galaxy Ace Duos 6802 (Dual Active Source Flipkart….Dont Trust it completely got to research a bit more..

    (finally Please do appropriate research before you can actually lock on a particular phone because havent used any of the devices just mentioning these names as per the the specs and reviews online )

    • Thanks for your reply, we appreciate the effort you did to come out with these names of the handset. We normally reply to every query as we are more busy these days as there are many queries coming to us for so many new phones being launched so sometimes we cannot reply to some queries.

      We hope you keep helping others like this as thats our idea to build a strong community of the users who help each other.

  4. I’ve been using the old Samsung-C5212i model which is truly Dual SIM+Dual Active, you can receive a call on one SIM while talking on another SIM and you can receive calls on one SIM while using Internet on another SIM. I am still looking for a Smart Phone which provides this facility. The mobile shops give you false promises just to sell a phone to you, so need to be careful and ask users of the phone model before buying. I think only Samsung Galaxy Core GT-I8262 provides this facility in smart phone category, Looking to buy it in near future, if anybody uses this..

    Thanks

  5. Hi,
    I just brought new Xolo A500s, thinking that I will use Sim1 for regular calls (vodafone)
    and will buy new sim (sim2 of Airtel ) to remain connected over internet using their 2G services (traiff plans are better then vodafone)
    but after reading this article, I now doubt about if i will get any benefit of getting second sim. I plan to use only internet on second sim, will it be possible that when intetnet is active on second sim, the first sim continues to receive calls?

    Please Advice.

    Regards

    • We cant tell you know, as we dont have the device with us know – but you can check the same with any existing user out here who can help you.

  6. Hi,

    I have already brought xolo a500s, and have 2nd sim too, my little experience say as long as you just want to use data connectivity from 2nd sim, things will work good.

    except a little flaw in android i believe, is that, when 2nd sim disconnects (maybe due to signal isssue)
    then it automatically switches data connection to 1st sim.
    I believe it should not do this, or there should be some way to tell android, that only use 2nd sim for data connection and never ever use 1st sim, no matter even if 2nd sim is unreachable.

    Does anyone knows if such a setting could be done ?

    Regards
    Jignesh

    PS. DO use a proper skin that can show different color for sim1 and sim2, otherwise it would be difficult to know when phone has switched data connection to another sim and your balance will start reducing. I already got that pinch. 🙂

    • I think you can do this with some third party apps, I think our co-readers can help you better this in this, I would request them to help you in this.

    • go to settings – dual sim settings – disable data traffic auto switch – select sim card for data traffic = sim1

  7. Thanks Abhishek for the informative article.
    While it seems obvious that Dual Active phones have an advantage over Dual Standby phones, except higher battery consumption (?), we see very few of them in the market. Could you please elaborate why this so? Do Dual Active phones pose any health hazard or have any business model issue?
    Thanks in advance.
    P

  8. I am owner of Samsung Galaxy Core GT-I8262 . This smartphone is absolutely dual stanby and not dual active. If somebody calls one of SIM while other one is busy (talking) , will receive a notice ” this number is currently not reachable”.
    Regards

  9. i have samsung galaxy core, how do i make only sim2 to work for internet usage. when i try mobile data it uses sim1 (2g & expensive). Please let me know how to remove or disable sim1 data usage, so that it takes sim2 as default for data usage.

  10. Hello guys,

    I have been using a dual active phone since last 3 years and it is samsung GT-B5722,The phone is a touch phone with no keypad and this phone is not available in the market anymore,They other dual active phones which were in the market 3 years back were GT-C6212 and GT-B7722,These were the dual active phones in the market and one of the best phones but now I hardly find a dual active phone.I guess HTC has a couple of them with Dual GSM active and GSM CDMA active.I got this info from the HTC Customer Service.I guess HTC Desire 600c is a dual active phone but it’s quite expensive.I am in real need of a dual active android phone but there are hardly any in the market.But right now in the market samsung doesn’t have any dual active phone.None of the android dual sim’s by samsung are dual active.If anyone has an update please let me know.Let it be any brand.

  11. @MKKhan … I have Xolo A500s, so options might be different in your model.
    For me under System Settings -> Sim Management -> Default Settings.
    you will find 3 options to set default sim for each of below action
    1. Voice call
    2. Messaging
    3. Data Connection

    Set your default DataConnection to Sim2 and voice&Messaging to Sim1

    But also read my above post dated ‘November 7, 2013 at 11:56 am’.

    Hope this helps.

    Cheers..

  12. I am planning to buy a dual SIM phone. wanted to check if it is possible to use say SIM 1 for calls only and SIM 2 for solely for the data package use only i.e mobile internet.

  13. Yes Jolly, Possible and thats exactly how i am using too.
    But be aware that if Sim2 signal is week, data connection will automatically switch to Sim1.

    Regards

  14. Hai!!!!!!! I am using Samsung Galaxy Star GT-S5282 mobile…it has got a problem with mother board 15 days ago….and it is working well after being repaired…but yesterday suddenly instead of showing two sim cards it is showing only one…i.e.,sim 2 only….
    I just want to know the exact reason for this….

  15. I have been using a dual active phone since last 3 years and it is samsung GT-B5722,The phone is a touch phone with no keypad and this phone is not available in the market anymore,They other dual active phones which were in the market 3 years back were GT-C6212 and GT-B7722,These were the dual active phones in the market and one of the best phones but now I hardly find a dual active phone.I guess HTC has a couple of them with Dual GSM active and GSM CDMA active..I am in real need of a dual active android phone but there are hardly any in the market.But right now in the market samsung doesn’t have any dual active phone.None of the android dual sim’s by samsung are dual active.If anyone has an update please let me know.Let it be any brand. –

  16. My view of Samsung phones are not dual active phones, but they made software of call forwarding , so that other service providers of mobile, forward from one sim to other sim , when one sim is engaged . but it will cost of call cost. Reason for samsung not making dual active phone may be higher Sar value in android phone. but in Java phone they made B7722 it is dual active phone
    But HTC made available dual active phone such one is HTC desire 600 dual sin , actual model no is 606W
    not dual sim phones are dual active , check correct type no , i.e series and the exact model no.
    if any body knows dual active phone of Samsung , pl. reply. since the htc phones are costlier than samsung

  17. I heard that HTC 501 is Dual Sim Active mobile. I just want to know can I make a call from Sim 1 to Sim 2 by using HTC 501?

  18. Is HTC 501 is Dual Sim Active mobile? I got different views about the same. some of the dealers says that it is Dual Sim Active and some of the dealers says that it is Dual Sim Standby mobile.

    Dear Users kindly confirm me the same.

  19. hiii my mob is samsung GT 7562 there is a prblm of call divertng nd i want to stop these..before i use dual sim bt noe i have only 1 sim or other sim is on another mobile bt due to some netwrk prblm the call divert on another sim…to how could i stop this?

    • Follow the below steps to Tunr OFF the call Forward. I think it should help you resolve your issue:
      1. On your apps list, locate and open Settings.
      2. Then select Call settings. (you may find it in Dual SIM in case you can’t directly find it under settings)
      3. Then select Voice call.
      4. Then select call forwarding.
      5. You will now see the following:
      – Always forward
      – Forward when busy
      – Forward when unreachable
      6. Tap the one you want to disable then tap turn off/disable to disable call forwarding.

      Please let me know if it helped.

    • Hi, im using Asus Zenfone 2 5.5″ 4GB ram, this hp is dual sim dual active, sure u can check the website or review.
      i using 2 sim card since 2008, i got use several model like galaxy duos, galaxy mega, zenfone 5, and galaxy duos 2 also all this is dual standby is not real dual active,
      the technology can make it dual but its costly, it need 2 receiver (1 cpu : 1 receiver) because difference frequency, as i know non of the processor can manage 2 GSM frequency in the same time, unless got 2 CPU inside the hp or maybe now newest CPU with new tech. so that i dont believe the 2012 Galaxy Ace Duos S6802 is dual active.
      But recently Asus say the Zenfone 2 can make it (they call it dual sim dual call), i using now is real 2 call can come in and go out at the same time, now i no more fu*k by fren because always difficult to call me.
      i dont know how ASUS do this or maybe the CPU intel Atom Z3580 inside zenfone 2 can manage 2 GSM frequency, dont know but it dose , not expensive some more , can try….

  20. hello.
    is MI4I dual stand by or dual active?
    kindly advise some android phone which are dual active sim option.

    thanks in advance.

    regards,
    Sudhir kumar

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