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How dual SIM phones work?

Hello,
i want to buy Lenovo s820 for very low price but use it only with 1 Sim - will it work fine?
or should i look for 1 sim phones?
thanks,
Daniel.

Dual Sim and Single Sim

I have a Canadian X Play, and while taking my sim out, noticed it said Sim 1. Thought it odd, so looked at the other spot. It looked like a dummy plate, so I peeled it off, and voila. It says Sim 2. Taking a quick peek inside the slot looks like it has the pins that would make contact with a second sim. I put my Sim in slot two, but it didn't pick it up. Not sure if you need to have a Sim in both slots, or maybe if it's enabled in software. I don't have a second nano sim to test. It looks like the hardware is all there. Once we get some factory images up, and some devs, it'd be interesting to see if these are all just the same device with a different tray and software.

Maybe it is disabled in software. Like a single sim build flashed.
Sent from my Vodafone Smart ultra 6 using Tapatalk

From what I know there's three current versions of the Moto X Play.
Canadian, Europe/UK and Nordic.
The Canadian and UK ones do not have two radios, but the Nordic one does, and that one supports Dual-Sim.
The Canadian and UK ones probably still have the pins for the sim card slot though.
I'm getting my Dual-Sim one in a couple of hours, we can try and find out if there's any differences?

Makes sense about the dual radios. I was silently hoping it was simple lol.

What makes me a bit sad, is that I have to choose between using two sim cards, or one sim and one SD card

TheDeadCPU said:
What makes me a bit sad, is that I have to choose between using two sim cards, or one sim and one SD card
Click to expand...
Click to collapse
I don't understand what you mean.
I have a dual sim model (XT1562) and don't have to make the choices you state. I'm using 2 SIM cards and a microSD card.

henrooo said:
I don't understand what you mean.
I have a dual sim model (XT1562) and don't have to make the choices you state. I'm using 2 SIM cards and a microSD card.
Click to expand...
Click to collapse
I thought the SD card was also where the second sim would be, now that I actually have the device in my hand I see that it is not so

henrooo said:
I don't understand what you mean.
I have a dual sim model (XT1562) and don't have to make the choices you state. I'm using 2 SIM cards and a microSD card.
Click to expand...
Click to collapse
But does your phone have the LTE band 20 (800 Mhz)?

ludovicien said:
But does your phone have the LTE band 20 (800 Mhz)?
Click to expand...
Click to collapse
Yes it does:
4G LTE (1, 3, 5, 7, 8, 19, 20, 28, 38, 40,​ 41)

Ah now that's tempting. I'm getting bored waiting for the Honor 7 and I can get a dual-sim Play down the road from my local equivalent of Currys (if that still exists).

ludovicien said:
Ah now that's tempting. I'm getting bored waiting for the Honor 7 and I can get a dual-sim Play down the road from my local equivalent of Currys (if that still exists).
Click to expand...
Click to collapse
Yes, Currys still exists
I'm impressed with the phone. I'm not a heavy user, but the battery life is very good. Especially after using a Nexus 4 for the past 2 yrs.
Even with both SIMs on, I'm getting 42-50 hrs of battery life and approx' 6:30 hrs screen on time. I'm sure I can get even more with only one SIM on.

I had a nexus 4 and battery life was pretty bad. However I struggle with battery life on all my android phones. I see people with 6 hours screen on with other devices and have no idea how even with kernel tuning I don't get near that. My Voda Smart Ultra 6 I occasionally got 5 hours screen in but then some days I got only 2 and a half. Nothing significant showing in usage either...
Sent from my XT1562 using Tapatalk

Which model is dual SIM? XT1562 or XT1563 or another model?

From gsmarena the XT1562 is European model (?) comes only with SS (single Sim) and has less LTE bands while XT1563 comes in both SS & DS (dual SIM) and has more LTE bands - AWS for one which is 1700/2100. I just looked this up from website so there might be more variations worldwide but if you are in NA (North America) I would make sure it's a XT1563 so you have the right bands for LTE. AFAIK the carriers in Canada are all bringing in SS units (XT1563) while the Mexican /Spanish units (also XT1563) are all DS units.
Not exactly a cut & dried answer but I hope it helps you out.
I have been more than happy with mine XT1563 SS but would have got a DS if available for same price & on shelf.
Codename_Falcon said:
Which model is dual SIM? XT1562 or XT1563 or another model?
Click to expand...
Click to collapse

I just flashed XT1562_LUX_RETASIA_DS_5.1.1_LPD23.118-12_cid7_subsidy-DEFAULT_CFC on my RETEU phone and can confirm that the second sim slot works fine if you take off the cover.

mexican version is dual sim xt1563

ALD76 said:
I just flashed XT1562_LUX_RETASIA_DS_5.1.1_LPD23.118-12_cid7_subsidy-DEFAULT_CFC on my RETEU phone and can confirm that the second sim slot works fine if you take off the cover.
Click to expand...
Click to collapse
Did you flash that on a European XT1562 or a XT1563? I'm wondering if I should try XT1563_LUX_RETLA_DS_5.1.1_LPD23.118-6.1_cid12_subsidy-DEFAULT_CFC.xml.zip on mine.

leomike said:
Did you flash that on a European XT1562 or a XT1563? I'm wondering if I should try XT1563_LUX_RETLA_DS_5.1.1_LPD23.118-6.1_cid12_subsidy-DEFAULT_CFC.xml.zip on mine.
Click to expand...
Click to collapse
European XT1562.

That's pretty cool that Motorola left things "doable" for us enthusiasts to utilize the second SIM by flashing the right ROM.

I am fairly sure that's just a (wonderful) side effect of technically inept management
I wonder if that affects LTE bands also?

No expandable storage on dual sim variant?

I bought a 4.7 Idol 3 and just now am seeing comments about the dual-sim variant lacking expandable storage. I've been looking for more info and all spec websites (including from my country) mention it should have a MicroSD slot.
Some dual-sim phones' tray also doubles a card reader, so you can choose whether to have expandable storage or dual sim capabilities. I've been wondering if the same is true for the Idol 3.
Which is true?
The model I'm getting is 6039J-JAALBRC-1, bought in Brazil.

prokaryotic cell said:
I bought a 4.7 Idol 3 and just now am seeing comments about the dual-sim variant lacking expandable storage. I've been looking for more info and all spec websites (including from my country) mention it should have a MicroSD slot.
Some dual-sim phones' tray also doubles a card reader, so you can choose whether to have expandable storage or dual sim capabilities. I've been wondering if the same is true for the Idol 3.
Which is true?
The model I'm getting is 6039J-JAALBRC-1, bought in Brazil.
Click to expand...
Click to collapse
That's true, either 2 sim-cards or sim+micro sd

georgearn said:
That's true, either 2 sim-cards or sim+micro sd
Click to expand...
Click to collapse
I don't think so...
The dual-sim slots arent cut out for the MicroSD cards,and even the software of the stock rom for the dual sim variant(in my case the Idol 3 6045K) doesnt show any ability to recognise an SD card.
Sent from my 6045K using Tapatalk

The Marionette said:
I don't think so...
The dual-sim slots arent cut out for the MicroSD cards,and even the software of the stock rom for the dual sim variant(in my case the Idol 3 6045K) doesnt show any ability to recognise an SD card.
Sent from my 6045K using Tapatalk
Click to expand...
Click to collapse
I have 6039k, and there are only 2 sim-cards and no place to put a memory card

georgearn said:
I have 6039k, and there are only 2 sim-cards and no place to put a memory card
Click to expand...
Click to collapse
Yeah,that is what I just said.
The dual sim variant doesn't support MicroSD cards.
But it does have 32GB of storage,while the single-sim ones have 16GB.
When I got this device,I kinda hoped its second sim slot would act as a MicroSD card slot (like in Meizu M2 Note),but I am pretty satisfied with Cloud storage too.

The Marionette said:
Yeah,that is what I just said.
The dual sim variant doesn't support MicroSD cards.
But it does have 32GB of storage,while the single-sim ones have 16GB.
Click to expand...
Click to collapse
I don't know about 5.5 model, but 4.7 has either 8 or 16 gb of internal memory

georgearn said:
I don't know about 5.5 model, but 4.7 has either 8 or 16 gb of internal memory
Click to expand...
Click to collapse
5.5 dual sim model has 32 GB of internal memory

That's too bad. Lack of MicroSD suppport would be a deal breaker if I saw it earlier, but I'm going to keep the Idol 3 considering I paid such a low price for it. Hopefully I'll get used to the available ~10 GB it comes with.
Thanks for making that clear.

Samsung Galaxy S7 model SM-930FD, Samsung Pay not supported?

I recently purchased the SM-930FD but it seems that model does not currently support Samsung Pay at least not here in the USA, is there anything I can do to get it working?

jojoluton said:
I recently purchased the SM-930FD but it seems that model does not currently support Samsung Pay at least not here in the USA, is there anything I can do to get it working?
Click to expand...
Click to collapse
You can use Android Pay either!

Yes Android Pay works

Won't it be OK to flash the firmware of the country where it's supported?

jojoluton said:
I recently purchased the SM-930FD
Click to expand...
Click to collapse
Hello,
could you please help me to find what is the difference between 930FD (supposed to be dual sim) whereas 930F is already dual sim ?
It seems there is no single sim version for the Galaxy S7, as 930F has 2 sim slot (SIM2 can accept a SD card: SIM2 or SD card).
http://www.gsmarena.com/samsung_galaxy_s7-7821.php
"microSD, up to 200 GB (dedicated slot) - single-SIM model
microSD, up to 200 GB (uses SIM 2 slot) - dual-SIM model"
It seems Gsmarena made a mistake, so could you please confirm that 930FD has 2 sim slots plus an additional microsd card slot ?
If you can please add a picture of the dedicated sd card slot (if any), I will really appreciate it. I googled a lot the web, youtube, and can't find any information about the ability to have 2 sims + 1 microsd on the 930FD S7...
Cheers,
Fred

Hi, you cannot have both sim cards and an SD card at the same time, its either 2 sims or a sim +sd card

There is a hack available for having all 3 together but it is quite risky.
Sent from my SM-G930F using Tapatalk

mehtamitul said:
There is a hack available for having all 3 together but it is quite risky.
Sent from my SM-G930F using Tapatalk
Click to expand...
Click to collapse
you mean using heatgun to remove only the gold from simcard and glue it to back of microsd ?
a friend tried 2 times, one fail (unreadable sim), one success.

Yeah..
Sent from my SM-G930F using Tapatalk

Here is the mod in question
HOW TO INSERT 2 NANO SIM (DUAL SIM ENABLED) AND MICRO SD CARD IN SAMSUNG GALAXY S7

jojoluton said:
I recently purchased the SM-930FD but it seems that model does not currently support Samsung Pay at least not here in the USA, is there anything I can do to get it working?
Click to expand...
Click to collapse
Not currently. Samsung Pay is currently only available on carrier branded phones. Samsung is supposed to be rolling out Samsung Pay in certain European countries but there is no ETA on that and it is still unknown if / when Samsung Pay will work on non-carrier branded phones anywhere.

0penfred said:
Hello,
could you please help me to find what is the difference between 930FD (supposed to be dual sim) whereas 930F is already dual sim ?
It seems there is no single sim version for the Galaxy S7, as 930F has 2 sim slot (SIM2 can accept a SD card: SIM2 or SD card).
http://www.gsmarena.com/samsung_galaxy_s7-7821.php
"microSD, up to 200 GB (dedicated slot) - single-SIM model
microSD, up to 200 GB (uses SIM 2 slot) - dual-SIM model"
It seems Gsmarena made a mistake, so could you please confirm that 930FD has 2 sim slots plus an additional microsd card slot ?
If you can please add a picture of the dedicated sd card slot (if any), I will really appreciate it. I googled a lot the web, youtube, and can't find any information about the ability to have 2 sims + 1 microsd on the 930FD S7...
Cheers,
Fred
Click to expand...
Click to collapse
What I've to say is The 930FD is the only dual SIM variant. 930F does not have the hardware for second SIM inside it. You can flash 930F roms to 930FD and both SIM slots would still work. Which means software-wise it's identical and is able to detect if the relevant hardware is in place.
So the second slot on the 930F is only for a microSD card.

scott14719 said:
Not currently. Samsung Pay is currently only available on carrier branded phones. Samsung is supposed to be rolling out Samsung Pay in certain European countries but there is no ETA on that and it is still unknown if / when Samsung Pay will work on non-carrier branded phones anywhere.
Click to expand...
Click to collapse
If you want a dual SIM Samsung Pay-capable S7, your best bet might be a Singaporean model, where Samsung Pay is launching later this year, sometime in Q2 or H2, can't remember. I can recommend mobyshop.com.sg if you want to purchase, the prices are quite low at around 600 USD for the 930FD, they do international delivery too. Do most of my phone shopping from them, no problems so far.

gunemalli said:
What I've to say is The 930FD is the only dual SIM variant (...)
So the second slot on the 930F is only for a microSD card.
Click to expand...
Click to collapse
OK, have look at this (also attached), bottom right of the picture:
http://webtrickz.com/wp-content/uploads/2016/02/wp-1456111785260.jpeg
If I recap: 930F and 930FD are using the same "kind" of double card slot:
- 930F is 1 SIM only and has got a "dedicated" slot for microSD card
- 930FD is having the same SIM1 slot, but slot 2 can be used by either SIM2 or SD card.
Can you please confirm that 930FD is using slot 2 for SIM2 or microSD card, but not both ?
Now I understand GSMarena description:
- microSD, up to 200 GB (dedicated slot) - single-SIM model
- microSD, up to 200 GB (uses SIM 2 slot) - dual-SIM model
Fred

0penfred said:
OK, have look at this (also attached), bottom right of the picture:
http://webtrickz.com/wp-content/uploads/2016/02/wp-1456111785260.jpeg
If I recap: 930F and 930FD are using the same "kind" of double card slot:
- 930F is 1 SIM only and has got a "dedicated" slot for microSD card
- 930FD is having the same SIM1 slot, but slot 2 can be used by either SIM2 or SD card.
Can you please confirm that 930FD is using slot 2 for SIM2 or microSD card, but not both ?
Now I understand GSMarena description:
- microSD, up to 200 GB (dedicated slot) - single-SIM model
- microSD, up to 200 GB (uses SIM 2 slot) - dual-SIM model
Fred
Click to expand...
Click to collapse
Hi Fred,
Yes that's correct. FD uses a hybrid slot i.e. the second slot can be used for either a second SIM card OR a microSD card but not both.
Also you cannot take a FD tray, put 2 SIM cards and put it into an F model and expect the 2nd SIM to work (I think the tray will go in but 2nd SIM won't work since teh hardware is not present on the motherboard.).
Hope this covers your questions.
Regards,
Asanka

gunemalli said:
Hope this covers your questions.
Click to expand...
Click to collapse
Thx verymuch for your detailed answers.
Fred

According to a report, in South Korea Samsung Pay has been used to process over $850 million worth of transactions.:good:

38 new banks and credit unions are now supported by Samsung Pay.

FRD-L19 vs. The other models

Hey, i have this model, its called the honor 8 premium. Comes with dual sim,64gig internal storage, dual-sim or one sim plus memory card. I cant see how this model actually differs from the others, but does anyone know?
Sent from my FRD-L19 using XDA-Developers mobile app

erkkiboy83 said:
Hey, i have this model, its called the honor 8 premium. Comes with dual sim,64gig internal storage, dual-sim or one sim plus memory card. I cant see how this model actually differs from the others, but does anyone know?
Sent from my FRD-L19 using XDA-Developers mobile app
Click to expand...
Click to collapse
For a start it has twice as much internal storage and the Gold be it 32GB or 64GB is limited to certain countries.
And of course the higher price cost, but on the whole same device as the 32GB dual sim..