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Wireless modem SIM in phone? +voip

Hi,
Possible to use a sim card from a 3g modem in a 3g phone? and then to use voip over it?
Anyone out there doing something like this?
Phone plans here only offer 300mb
3g internet offers 5gig for less $$ then the 300mb for a phone
Cheers!

I dont have any input other than i have wondered the same thing myself. I even wondered about cloning the SIM and using the HTC tytn II mounted in my car a secondary device that has the same number, but i guess that cant be done.

I used the sim from a 3 usb utms modem in my pda without any problems

[Q] Multiple Networks at Once

Hey all! Long time lurker, first time poster. Is anyone working on running the Nexus 5 on multiple networks? Specifically, Sprint and Tmobile?
I don't see why this wouldn't work right off the bat. In my head, the radios are present and sprint uses the imei number instead of a Sim card. So shouldn't it work similar to a dual Sim phone?
My hope is to keep my $30 T-Mobile plan and add FreedomPop as my source for free minutes when in a sprint area.
I'd love to hear from everyone, my searching couldn't find anything but if your googlefu is better than mine please help!
Thanks,
Matt

TerkyTime said:
Hey all! Long time lurker, first time poster. Is anyone working on running the Nexus 5 on multiple networks? Specifically, Sprint and Tmobile?
I don't see why this wouldn't work right off the bat. In my head, the radios are present and sprint uses the imei number instead of a Sim card. So shouldn't it work similar to a dual Sim phone?
My hope is to keep my $30 T-Mobile plan and add FreedomPop as my source for free minutes when in a sprint area.
I'd love to hear from everyone, my searching couldn't find anything but if your googlefu is better than mine please help!
Thanks,
Matt
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Click to collapse
I never thought about this before but now that you mention it, it could be pretty cool to have access to two LTE networks if one of them is being slow. Sprint want a ICC security SIM card in the phone though, not sure if you could bypass this or use the phone without it anyway.

You need a sim card for spring LTE and voice/data on T-Mobile, and there is only one sim slot.
Sent from my Nexus 5 using Tapatalk

Thanks for the quick replies guys! I'm still very interested in it, perhaps you are right that the security Sim could be bypassed. I'd love this to gain some traction, this would be an incredibly unique feature to boast!

The phone doesn't have dual radios to even accommodate this anyway. So even if you were somehow able to activate it with a TMO SIM and on Sprint (which alone would take a ton of ROM hacking), you still physically couldn't talk to both networks. The radio would need to pick one or the other. It can't just flip flop at will, it has to set up the connection with the tower and maintain it.

I disagree. If you were to activate it on sprint, you could use it without the sprint Sim... You just would not get LTE. So technically you could activate it on Sprint (as you don't activate the phone on T-Mobile just the sim).
It would be cool if we could bypass the sprint Sim necessity.
Sent from my Nexus 5 using XDA Premium 4 mobile app

This won't work because when connected to LTE on Sprint it uses eCSFB to fall back to 1x to accept the call. This happens over the LTE connection. If you're connected to tmobile LTE, there's no way for it to tell you you have a call incoming from Sprint's network.
Sent from my Nexus 5 using Tapatalk

afazel said:
This won't work because when connected to LTE on Sprint it uses eCSFB to fall back to 1x to accept the call. This happens over the LTE connection. If you're connected to tmobile LTE, there's no way for it to tell you you have a call incoming from Sprint's network.
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So do you think it could feasibly work as a simple menu option choice, or a widget to switch networks? I personally use Google Voice so receiving calls would happen in whichever network happens to be connected

TerkyTime said:
So do you think it could feasibly work as a simple menu option choice, or a widget to switch networks? I personally use Google Voice so receiving calls would happen in whichever network happens to be connected
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Click to collapse
No, you actually have to switch the SIM. Once it's registered to Sprint with a SIM, then swapping that SIM for another carrier's SIM completely switches it over. Then, when you want to use Sprint again, you put your Sprint SIM back.

afazel said:
No, you actually have to switch the SIM. Once it's registered to Sprint with a SIM, then swapping that SIM for another carrier's SIM completely switches it over. Then, when you want to use Sprint again, you put your Sprint SIM back.
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Click to collapse
TerkyTime said:
So do you think it could feasibly work as a simple menu option choice, or a widget to switch networks? I personally use Google Voice so receiving calls would happen in whichever network happens to be connected
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Click to collapse
I guess what terky meant is he will forward calls to two numbers in Google voice settings ( let's say T-Mobile and freedompop) and then whichever network will be active will receive the call. So you will still be receiving the call.
Sounds logical but it has to be tried.
I see freedompop's website now accepts meid numbers. But my concern is; will activating the nexus 5's meid number on freedompop block using the gsm functionality of the phone??
If not, it would be just terrific!!
Sent from my Nexus 5 using Tapatalk

h20wakebum said:
I disagree. If you were to activate it on sprint, you could use it without the sprint Sim... You just would not get LTE. So technically you could activate it on Sprint (as you don't activate the phone on T-Mobile just the sim).
It would be cool if we could bypass the sprint Sim necessity.
Sent from my Nexus 5 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
afazel said:
This won't work because when connected to LTE on Sprint it uses eCSFB to fall back to 1x to accept the call. This happens over the LTE connection. If you're connected to tmobile LTE, there's no way for it to tell you you have a call incoming from Sprint's network.
Sent from my Nexus 5 using Tapatalk
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Click to collapse
Vincent Law said:
The phone doesn't have dual radios to even accommodate this anyway. So even if you were somehow able to activate it with a TMO SIM and on Sprint (which alone would take a ton of ROM hacking), you still physically couldn't talk to both networks. The radio would need to pick one or the other. It can't just flip flop at will, it has to set up the connection with the tower and maintain it.
Click to expand...
Click to collapse
TerkyTime said:
So do you think it could feasibly work as a simple menu option choice, or a widget to switch networks? I personally use Google Voice so receiving calls would happen in whichever network happens to be connected
Click to expand...
Click to collapse
So with the new Android 5.1 update, which now supports dual sim, (I know guys N5 only has one sim card slot) do you think it would be easier to do this?
My idea is to get a freedompop service with the imei number, just registering the phone online and you dont physically need a sim card from them. And lets say we use another sim card ( Att, tmob, etc) to use. So basically we would have two service providers.
And from my point of view; i wouldnt need both of their services at the same time. Lets say i want to use freedompop first, and whenever it expires, I can switch to my other carrier manually.
Any thoughts on this?
Brainstorming?!?!?!

Moto G Dual sim Switch on off with data selection

Moto g 1st gen 1033. I have a very weird problem. I used to get calls and have both sims working fine with no data (as i dont need it and these are both prepaid so expensive). However now Sim 1 works only.
HOWEVER this is the weird part - when i select SIM 2 data to on, Sim 1 turns off and sim 2 turns on (with data and calls etc)!???? WHen i select data off on sim 2 (which is now working to get calls etc) then data turns off and calls etc remain on. Then data when i want Sim1 i have to select data on with sim 1 then sim 2 turns off and Sim 1 is now working with data. Then if i turn off data on sim1 then Sim 1 still works (but obviously no data) BUT sim 2 is still totally off for calls etc.
SO it cant be a SIM issue and it cant be a physical issue with the sim card or sim slot. THey are both 3g cards/carriers and have full coverage. Please help this phone was working fine until a few months ago and i can use either sim but need to go through the above process if i want either sim card. PLEASE HELP and thanks heaps in advance. PS im new to this forum but is seems like the best one on the web for real issues.

Solved dual sim not working
NairNarel said:
Moto g 1st gen 1033. I have a very weird problem. I used to get calls and have both sims working fine with no data (as i dont need it and these are both prepaid so expensive). However now Sim 1 works only.
HOWEVER this is the weird part - when i select SIM 2 data to on, Sim 1 turns off and sim 2 turns on (with data and calls etc)!???? WHen i select data off on sim 2 (which is now working to get calls etc) then data turns off and calls etc remain on. Then data when i want Sim1 i have to select data on with sim 1 then sim 2 turns off and Sim 1 is now working with data. Then if i turn off data on sim1 then Sim 1 still works (but obviously no data) BUT sim 2 is still totally off for calls etc.
SO it cant be a SIM issue and it cant be a physical issue with the sim card or sim slot. THey are both 3g cards/carriers and have full coverage. Please help this phone was working fine until a few months ago and i can use either sim but need to go through the above process if i want either sim card. PLEASE HELP and thanks heaps in advance. PS im new to this forum but is seems like the best one on the web for real issues.
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Click to collapse
Hey, i solved it only after a lot of hair pulling. Lucky i didnt wipe everything as theres nothing wrong with the phone or SIMs. I didnt realise that moto g on one sim its 3g the other only ever works on 2g. Unbeknownst to me Australia is getting rid of 2g. So ONLY one sim works as the moto g can only support one sim working 3g and since no 2g you have one sim not working as above problem. So you have to play around with switching data which then switches the 3g/2g combination by itself BUT its very fiddly so you either dumb the other sim and not use it or get a moto 4 or 5 which support TWO 3g sims. Im supprised this hasnt been discussed anywhere on the web or anywhere i have been looking. Cheers

Issue with Mobile data dropping during call

Hi,
I am facing this problem for long and have not found any solution.
I am using Jio sim in SIM 1 slot and Airtel in SIM 2 slot. I am using Jio sim for 4G data connection. Whenever I receive call on any SIM the 4G data connection drop. Not sure what is the issue.
Please advice.

Always been this way, since new? How long have you had it?

JeffDC said:
Always been this way, since new? How long have you had it?
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2 months. So should I take it as there is no solution.

My guess, and it is a guess, is that when you have a dual sim phone, and a call comes in on one line, the other line (including data) is temporarily shut down? Do you know other folks with dual sim in your area and how their phones data works with two lines when a call comes in?

eSIM/dual SIM on AT&T variant

Got my AT&T variant today. Doesn't look like eSIM funcationality is enabled. Second IMEI and eSIM shown but greyed out and no way to activate. Is this true? If so, does anyone know if unlocked version allows for eSIM use so you can get dual sim? I need dual SIM for both US (AT&T) and international travel (Singapore).

no dual sim on unlocked version either

uicnren said:
no dual sim on unlocked version either
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Click to collapse
Really? Why put the eSIM in if you're just going to disable it?

well that's a bummer. Hopefully someone will come up with some firmware or we'll see a country release the 4G version of the phone that will work in the US and support dual SIM. I do, however, use wifi calling a lot and right now the iPhone seems to be the only choice that can be AT&T wifi calling compatible and dual sim.
Thanks for letting me know - i also had an order for the unlocked variant that I will cancel.

TGUY25 said:
.... I do, however, use wifi calling a lot and right now the iPhone seems to be the only choice that can be AT&T wifi calling compatible and dual sim....
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Pixel 4/4XL unlocked versions (as well as bought thru AT&T) will do Wi-Fi calling and HD Voice on AT&T (sometimes requires a little work on your part to bug AT&T).
Also, I cannot find anyway to do Wi-Fi calling on the Flip, let alone HD Voice, though it is perfectly clear with calls I have made so far.

I bought the ATT version of the flip so getting wifi calling. I didn’t think Pixel 4 was dual sim? Before various bans, I had decent luck getting HD voice on Huwawei phones but never WiFi calling unless ATT firmware (or iPhone)

TGUY25 said:
I bought the ATT version of the flip so getting wifi calling. I didn’t think Pixel 4 was dual sim? Before various bans, I had decent luck getting HD voice on Huwawei phones but never WiFi calling unless ATT firmware (or iPhone)
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Click to collapse
Typical AT&T treatment of BYOD with regards to Wi-Fi.
Pixel 4's are physical SIM and eSIM.
Basically you can (if you find a tech who can/will) provision the account with an IMEI that supports those features, and your SIM is current, it will/should work. My 4XL is currently set up like this (and previous Pixels as well).

Thx didn’t know about the pixel 4 - I did the same thing with IMEI numbers. I bought a cheap galaxy phone from ATT for the sole purpose of having an IMEI that shows ATT. It won’t help WiFi calling which needs firmware support but has consistently gotten HD voice to work. Hopefully a different variant of the flip will show up with dual sim support that can be used on the ATT network

TGUY25 said:
I bought the ATT version of the flip so getting wifi calling.....
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Click to collapse
Slightly off topic, but if you have a minute, could you post where the setting(s) for Wi-Fi calling actually are (if there is any), I'm curious to see if they are on mine (I can't find any as of yet).
Thanks.

It gave me the option to setup when I ran. Y hone setup. It’s all under connections in setting or you can search setting for WiFi calling. I believe this is only available with the ATT firmware

TGUY25 said:
It gave me the option to setup when I ran. Y hone setup. It’s all under connections in setting or you can search setting for WiFi calling. I believe this is only available with the ATT firmware
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Click to collapse
I just wanted to make sure I wasn't missing something obvious, and yes, seems its only on AT&T branded device(s).

On the unlocked version, I was able to access the hidden SIM manager menu using Activity Launcher and enable the second SIM. However, even after doing so, it doesn't seem that I can do much with it.

I saw same you can see it but it's not really enabling it (under about phone, esim is still greyed out). I bought a European Version of the phone that is supposed to have dual sim enabled and is arriving tomorrow - I will report back if I can add my AT&T plan to the eSIM and use my SG SIM card on the second line and how it works. Even if I get that to work, i will have to give up wifi calling (since not an AT&T variant of the phone) and usually - Samsung pay doesn't work (but usually google pay does). i will report back. Love the phone but without the ability to use 2 SIMs, it will sadly be doing back.

TGUY25 said:
I saw same you can see it but it's not really enabling it (under about phone, esim is still greyed out). I bought a European Version of the phone that is supposed to have dual sim enabled and is arriving tomorrow - I will report back if I can add my AT&T plan to the eSIM and use my SG SIM card on the second line and how it works. Even if I get that to work, i will have to give up wifi calling (since not an AT&T variant of the phone) and usually - Samsung pay doesn't work (but usually google pay does). i will report back. Love the phone but without the ability to use 2 SIMs, it will sadly be doing back.
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Click to collapse
I thought that the Wi-Fi calling piece was becoming more universally supported, regardless of variant. I have the unlocked version and Verizon Wi-Fi calling (and HD calling) are both working.

Hi, I got one in Czech Republic and the dual sim (eSim/normal Sim) dual standby. the setting for eSIM are under Connections>>Sim card Manager, there should be a section with eSIMS and you select 'add mobile plan' (in CZ you scan the barcode of the eSIM thats provided by the operator). Wifi calling is in the phone app under call settings and can be activated for both sim 1 and sim 2 at the same time

I got the UK version of the phone. I have an AT&T phone number on an eSIM and have the eSIM card (with the QR code). I removed the plan from my old device (a Galaxy Fold Dual SIM I bought in Singapore that worked fine with both SIMS) and then tried to "add the plan" onto my new flip. I scanned the QR code and get the message "Your mobile plan is already being used on another device. For more information, contact your service provider.: I called AT&T and advanced tech support added the new IMEI's(both physical and eSIM) to that number on their end but still getting the error. They were at a loss for a solution. Any ideas on how to fix this? Really love the phone though useless to me without the ability to use an eSIM for my AT&T number.

BTW, yes to calls over LTE (VoLTE) with AT&T SIM on UK variant of the phone and, not surprisingly, no joy on Wifi Calling

You need a new QR code from ATT. If you are using an older QR code it wont work.

Are both SIMs 3G capable?
TGUY25 said:
I got the UK version of the phone. I have an AT&T phone number on an eSIM and have the eSIM card (with the QR code). I removed the plan from my old device (a Galaxy Fold Dual SIM I bought in Singapore that worked fine with both SIMS) and then tried to "add the plan" onto my new flip. I scanned the QR code and get the message "Your mobile plan is already being used on another device. For more information, contact your service provider.: I called AT&T and advanced tech support added the new IMEI's(both physical and eSIM) to that number on their end but still getting the error. They were at a loss for a solution. Any ideas on how to fix this? Really love the phone though useless to me without the ability to use an eSIM for my AT&T number.
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I gonna buy the UK model and so I can use both my personal and company numbers on one phone.
My company's number is nano sim and the supports 3G and 4G
My personal number is esim and supports 3G and 4G
Neither my personal nor company number network support 2G.
I read somewhere that while Z Flip is dual sim, one of the sims only support 2G. is that right? Can anyone confirm it?

went to AT&T store, moved my old esim (galaxy fold) to a physical sim, activated and tested on physical SIM then converted it again to eSIM (new QR code). Worked! Had trouble going from eSIM to eSIM but converting to physical SIM in the middle of the process (something I read on another forum) fixed it.