When buying a dual SIM mobile phone there is one feature that creates a lot of confusion among the customers. It is important to know what Dual Active and Dual Standby really means. Because once you open the handset box pack, there is no turning back.
So you want to buy a dual SIM and the specifications say it supports dual Standby, do you really know what it is or are you just happy that you can use 2 SIM on a single phone. In most cases customers get disappointed because they never understood the feature.
Dual Standby phone
The market is filled with a lot of low cost or high end phones that supports dual Standby mode. Read the word carefully and you will understand what it really means. Dual + Standby, this means the phone supports dual SIM but in Standby mode. In simple words when none of the SIM are used then both the SIM’s are active but when you are using a particular SIM the other SIM becomes inactive.
Another issue with dual standby phones that support 3G is that, when the 3G / 2G network is used the other SIM becomes inactive. Usually you will not notice this issue with normal usage, but try downloading a big file or watch a streaming YouTube video, the other SIM will be unreachable.
In dual standby if a person is using SIM 1 and another person is calling on SIM 2 they will hear the message “not reachable, try again later”.
Many of the dual SIM users usually talk more on one particular SIM and the other SIM is basically for their personal use – not so important, they don’t really have any issues with this mode. If you want both the SIM’s active at all times then this is not the feature you should are looking for.
Dual Active phone
Again as the same suggest its Dual phone with active mode which means both the SIM’s are active all the time. Dual active is relatively easier to understand. Use SIM 1 or SIM 2 for voice calls or net surfing the other SIM is always active you can still receive calls on the other SIM and even switch calls for example, you can keep the caller on SIM 1 on hold and talk to the other user on SIM 2.
There are very few dual Active phones available in India, so if you need this functionality make sure you choose the right option.
The Dual Standby phones use a single transceiver which at a given time can server only one SIM, whereas most dual Active phones comes dual transceiver, one for each SIM.
Do check before you buy the dual active phone because even when the manufacture says that it is dual active it still works like a dual standby.
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{ 20 comments… read them below or add one }
Thanks for VERY EASY and LAYMAN language explanation.
thanks again,
Himanshu
atleast mention the phones which are dual sim active from the current lot.
Wonderful, thanks for the detailed explanation
Hi Gogi,
I would like to know which models in India currently support and possess “Dual Active Sim” as I am planning to buy one.
Thanks,
~naren
plz suggst me a model call recv at time in dual sim
samsung c5212
Thanks Gogi. Useful and simple one. It helped me.
Hi Gogi,
Thanks for telling this difference! Is it possible on dual standby phones that if sim1 is in use and some1 calls on sim2,then sim2 forwards the call to sim1?
I hered that samsung galaxy ace duos / grand duos are dual active sim mobiles now. is it tru?
I have searched a lot but all are giving very confusing statement. Can u please suggest any model with Dual active feature within 6K. I need only basic functionality with FM,internet and if possible longer battery backup. Android, games , full touch is not needed as such… Plz suggest?
What if i use GRPS in SIM1 and call comes in SIM2 in stand by mode??…Will i get the call in SIM2 (please explain all cases like surfing, downloading, streaming, gprs ruuning in background for apps like whatsapp and facebook)??
Because i am planning to use 1 sim for GRPS and other for SMS and Calls.
Hey GOGI, I have Micromax A110. To switch sim for voice calling or else is sim management settings are the option to go for or is there any easy or direct way of doing that plz reply. Thanks..
How about data connection on Dual standby phones (e.g. Karbonn A5) – if data connection is ‘ON’ on one of the sims, will the calls be receivable on other sim?
Hi, I’ve not seen any other dual SIM phones except, those from Samsung, with active dual SIMs. I am using a B7722 (not android), with a 3G on SIM1 & 2G on SIM2. I’ve never faced any problem in receiving the calls on either of the SIMs.
If you are looking for active DUAL SIM phones, your first option should be to look out for a phone from Samsung.
Cheers!
I want to know that samsung recently launch basic dual sim phone no.-1207. in this both sim will works? means while tail with one sim another also show in waiting in second sim. Plz help me.
Is there even a single phone available in the market today which is dual active, other features don’t matter to me much, all I need is this feature, please suggest me 1 or 2 phones, which are currently available or are upcoming in near future.
Samsung galaxy s duos is a true dual active phone.Remember many manufacurer are asking you to use call forward facility from network provider on both sims on few dual standby phones andso that your calls will be forwarded or diverted if you choose "divert if unreachable" but this one is not true dual active and you cant swap calls between two active calls easily.
does mm A100 support dual active?
No almost all phones today are dual standby.
I am confused about not getting display of contact name while receiving call even same number is saved with name. please help me to solve this problem.