Database Info

Able to use 3G only without physical SIM card? Network debug menu?

Is there a way to use the phone without a SIM card? I don't have LTE in my area, and I keep getting the "no SIM Error" so was thinking that the SIM was useless anyways.
On the stock ROM every time I get the SIM error, or if I remove the SIM card itself, I get no data on the phone at all. When I try to turn on Mobile Data it prompts me to insert the SIM.
On other CUSTOM or JB ROMs, I don't get the SIM error prompt but I simply get no data.
On older Sprint phones, I know you can go into the DEBUG menu to see that EVDO/3G was actually being authenticated, the handshake was negotiated, then connection type/speed/tower/hand-off status, etc. Is there such an option with Verizon phones? I'm wondering if Data is completely shut off without the SIM, or if the data connection is actually established on the network but simply blocked from being used?
PS - per recommendation I have tried using the PHONE INFO app to switch the option to NV only, but am still getting no data. Voice/Text work perfectly.

black7 said:
Is there a way to use the phone without a SIM card? I don't have LTE in my area, and I keep getting the "no SIM Error" so was thinking that the SIM was useless anyways.
On the stock ROM every time I get the SIM error, or if I remove the SIM card itself, I get no data on the phone at all. When I try to turn on Mobile Data it prompts me to insert the SIM.
On other CUSTOM or JB ROMs, I don't get the SIM error prompt but I simply get no data.
On older Sprint phones, I know you can go into the DEBUG menu to see that EVDO/3G was actually being authenticated, the handshake was negotiated, then connection type/speed/tower/hand-off status, etc. Is there such an option with Verizon phones? I'm wondering if Data is completely shut off without the SIM, or if the data connection is actually established on the network but simply blocked from being used?
PS - per recommendation I have tried using the PHONE INFO app to switch the option to NV only, but am still getting no data. Voice/Text work perfectly.
Click to expand...
Click to collapse
ASFAIK, the SIM does 3g and 4g. WHY? because 3g on the gs3 is ehrdp and that also requires a handshake between 3g and lte. I believe it is like using 3g tech but with the pipeline size of lte... or thats as far as I've read into it.

xicewallx said:
ASFAIK, the SIM does 3g and 4g. WHY? because 3g on the gs3 is ehrdp and that also requires a handshake between 3g and lte. I believe it is like using 3g tech but with the pipeline size of lte... or thats as far as I've read into it.
Click to expand...
Click to collapse
Thanks for the info, xicewallx. I was afraid of that, however I've read of people flashing both Sprint and Verizon variants of the SGS3 to Boost, Straight Talk (CDMA), Verizon Pre-Paid which all I assume do not use LTE/SIM. I presume this means that the SGS3 can certainly use 3G without the need of the SIM card. I'm looking for a way to default to this on the SGS3 for us poor folk who do not have the luxury of LTE yet and have to deal with the SIM error until Verizon/Samsung fixes it.
Any help would be greatly appreciated!

I was able to get to a debug screen using the IOTHiddenMenu option (through Any Cut) but it simply stated that EVDO was in "sleep state." I wasn't able to figure out how to get it to start a connection yet.

Go to the Verizon store and get a free SIM card? Why go through all of this trouble.
Sent from my Nexus 7

TheBiles said:
Go to the Verizon store and get a free SIM card? Why go through all of this trouble.
Sent from my Nexus 7
Click to expand...
Click to collapse
Thanks for the suggestion. Issue is that the phone is having the NO SIM error randomly. Have already tried a different SIM from Verizon (friend's account) but still have that same issue.

black7 said:
Thanks for the suggestion. Issue is that the phone is having the NO SIM error randomly. Have already tried a different SIM from Verizon (friend's account) but still have that same issue.
Click to expand...
Click to collapse
So get a new phone? That one is obviously faulty. Go get a free replacement. You have to live with it for 2 years. I wouldn't want a faulty device for a week let alone 2 years.
Sent from my SCH-I535 using Tapatalk 2

Are you in a poor signal area? Only time I've received the "No Sim" error was at my parents where the signal is crap. As for using it without the sim card, doubt that's possible since the sim is used for authentication if I'm not mistaken.

hello,
if i understand correctly, the sim card in the S3 is basically the same as all the previous world phones, meaning its just RUIM card. The MEID and IMEI are on the phone, the card it comes with is just basically a storage device in simple terms. can someone who has access to another verizon active S3 sim try putting the card into their phone and checking the IMEI that the phone reports? does swapping the cards change the IMEI in other words. I do not think it will, but interested to know for sure.
i just started playing with one of these, but i feel realy confident you can get non 4G services to work without a sim in it.
cheers,
disco

disco_y2k said:
hello,
if i understand correctly, the sim card in the S3 is basically the same as all the previous world phones, meaning its just RUIM card. The MEID and IMEI are on the phone, the card it comes with is just basically a storage device in simple terms. can someone who has access to another verizon active S3 sim try putting the card into their phone and checking the IMEI that the phone reports? does swapping the cards change the IMEI in other words. I do not think it will, but interested to know for sure.
i just started playing with one of these, but i feel realy confident you can get non 4G services to work without a sim in it.
cheers,
disco
Click to expand...
Click to collapse
You have it just about backwords. The sim is the real identifier on vzw 4g devices. You can take a working authorized sim and use it to activate another 4g Verizon phone and it will activate under the phone number associated with the sim.
Sent from my SCH-I535 using xda app-developers app

thats interesting, S3 still has an MEID also doesnt it?
thanks for the info!
cheers,
disco

disco_y2k said:
thats interesting, S3 still has an MEID also doesnt it?
thanks for the info!
cheers,
disco
Click to expand...
Click to collapse
There is still an ESN /MEID that the network uses to identify the phone for the CDMA side of the network. The process is all handled by the LTE SIM on LTE phones, though.
OP: You have a broken phone. The no-SIM error is not something that goes away. Take it to a store and get a new SIM and/or order a replacement.
Sent from my Amazon Kindle Fire using Tapatalk 2

im gonna have to dig in some more i am still not convinced the card is not a ruim card. like the other sprint and verizon world fones the imea is in the fone im pretty sure, until you instroduce another networks actual gsm card. i still the card it comes with is a simple ruim that holds the login info and other data, etc, well you know what ruim is.
does anyone have a service manual or white papers on this one yet? i would love to read through them.
thanks again bro
cheers,
disco

I'm still looking for an answer to this if anyone has any suggestions. Any way to get 3G without a SIM card?

Did you ever get a new phone from Verizon? It seems like an issue with your phone, not the network.

I have been trying something similar along the way as I have been able to get rock solid data by switching to EvDo only using the Phone Info app.
I gave determined I am connecting to a US Cellular tower when I have solid data.
But while in EvDo only I cannot send or receive calls or texts.
I am looking for a way to enable calls and text while in EvDo only mode.
Not trying to highjack just thought this is somewhat related.

TheBiles said:
Did you ever get a new phone from Verizon? It seems like an issue with your phone, not the network.
Click to expand...
Click to collapse
New phone and new SIM from Verizon seems to have made the problem less apparent, but it still happens, especially when driving through areas where reception is a bit spotty. It's really become an issue as I rely on getting emails for business, especially while traveling, and I don't get notifications of new emails if I have no data service which I don't become aware of until I actually look at the phone. Missed a couple of important emails/meeting invites because of this already...
Brenardo said:
I have been trying something similar along the way as I have been able to get rock solid data by switching to EvDo only using the Phone Info app.
I gave determined I am connecting to a US Cellular tower when I have solid data.
But while in EvDo only I cannot send or receive calls or texts.
I am looking for a way to enable calls and text while in EvDo only mode.
Not trying to highjack just thought this is somewhat related.
Click to expand...
Click to collapse
That would be fantastic if you come across something that will allow voice/text/EvDO(3G)! Have you made any headway on this? Would be glad to help in any way I can also to get this working.

black7 said:
I'm still looking for an answer to this if anyone has any suggestions. Any way to get 3G without a SIM card?
Click to expand...
Click to collapse
I flashed a VZW GS3 to Sprint. 3G data is working fine w/o a SIM card. If I put a non activated VZW card, data doesn't work obviously.
The trick in getting this to work is to use QPST to configure Profile 0 and Profile 1. When flashing to Sprint or Boost, you must also load a Sprint PRL into the device using QPST.
Sent from my SPH-L710 using Xparent SkyBlue Tapatalk 2

AlpineMan said:
I flashed a VZW GS3 to Sprint. 3G data is working fine w/o a SIM card. If I put a non activated VZW card, data doesn't work obviously.
The trick in getting this to work is to use QPST to configure Profile 0 and Profile 1. When flashing to Sprint or Boost, you must also load a Sprint PRL into the device using QPST.
Sent from my SPH-L710 using Xparent SkyBlue Tapatalk 2
Click to expand...
Click to collapse
Choose nv only, cdma evdo in phone info and program nv items and flash prl.
Sent from my SCH-I535 using xda premium

jclendineng said:
Choose nv only, cdma evdo in phone info and program nv items and flash prl.
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
A little off subject but I how did you get it on sprint I'm trying to get mine on verizon prepaid and have it set to nv only. I must be missing somethin because my esn/meid all look right I get data but yet no calls

[Q] Verizon sim and att One X?

Can I switch my verizon s3 sim card to a att one x?
I have looked up apn's and such but every time I put in an apn, then click save...it isn't there. There are no apns on the phone at all.
I have been on Verizon for over a year. I like their coverage but they are expensive each mo. I picked up this phone from a person who needed money, said the phone had been cut off because they couldn't pay their bill. They had unlocked it and rooted it before it was cut off. I can get on internet and use it as long as I am around wifi (except for phone calls of course) but I would like to get it to work and switch to Straight Talk.
When I go to settings and networks it says "Disconected because service is unavailable" I click it anyway and go apn's. there are none there. I make a new one and save it and it disappears. This is done when I have my verizon sim card in it. When I take the sim out I can't get to the APN's they are grayed out.
Any suggestions? Thanks so much...

Judeeg said:
Can I switch my verizon s3 sim card to a att one x?
I have looked up apn's and such but every time I put in an apn, then click save...it isn't there. There are no apns on the phone at all.
I have been on Verizon for over a year. I like their coverage but they are expensive each mo. I picked up this phone from a person who needed money, said the phone had been cut off because they couldn't pay their bill. They had unlocked it and rooted it before it was cut off. I can get on internet and use it as long as I am around wifi (except for phone calls of course) but I would like to get it to work and switch to Straight Talk.
When I go to settings and networks it says "Disconected because service is unavailable" I click it anyway and go apn's. there are none there. I make a new one and save it and it disappears. This is done when I have my verizon sim card in it. When I take the sim out I can't get to the APN's they are grayed out.
Any suggestions? Thanks so much...
Click to expand...
Click to collapse
Verizon is cdma while we're gsm so I doubt it'll work
Sent from my Elemental Venomized S-off HTC One XL

Try switching ROMS to maybe Viper or Hatka
Sent from my One X using xda premium

majortaylor said:
Verizon is cdma while we're gsm
Click to expand...
Click to collapse
This.
It will not work. Verizon uses a completely different network that your One X is not capable of connecting to.

Verizon uses CDMA for voice and 3G, which doesn't use a SIM. I've never used Verizon, so I'm no expert. But just doing a quick search it looks like the SIM is only for LTE. Plus, Verizon doesn't use the same band for LTE that AT&T does, so even LTE is not going to work on this phone.
http://support.verizonwireless.com/information/4gsim.html
As a rule, GSM phones will not work on Verizon. There may be some exceptions (such as phones that have both GSM and CDMA support). But the moral of the story is that you need to do thorough research before buying any phone that is not direct from your carrier, as failure to do so may mean spending your money on a phone that does not work at all on your network.
The phone will work on Straight Talk, as ST uses AT&T and T-Mobile, which are both GSM carriers.
---------- Post added at 10:35 AM ---------- Previous post was at 10:34 AM ----------
iElvis said:
It will not work. Verizon uses a completely different network that your One X is not capable of connecting to.
Click to expand...
Click to collapse
Yeah, I was surprised to even see the mention of a Verizon SIM, as I didn't think there was such a thing. But apparently now there is, with LTE.

Yes I can confirm. A friend of mine has the RAZR m, and it has a sim in it. Now it all makes sense. Still, two different networks and not compatiable. Now people think they can go sim swapping...thanks Verizon
Sent from my Carbon-ize Evita using xda-developers app

http://forum.xda-developers.com/showthread.php?t=1809314
Not entirely Tru.
Sent from my EVO using xda app-developers app

Thank-you all for your time.
Since I can't use my Verizon Sim in it. I can try the Straight Talk sim I guess. Only thing bothering me is there are no APN's on the phone and I haven't been able to make one stick... If I get a sim for Straight talk, I am wondering if I can get the APN's to stay.
Have any of you run into that? Thanks once again...

Is There a CDMA On/Off Setting?

With GSM it's easy - you take out your SIM card, and you are off that SIM's network.
Presumably the Nexus 5 will work for voice and 3G without the SIM card. Is there some way to turn off CDMA (yes, I know that if there is no SIM I can just turn off all cellular data. But that's not my question.)

If you mean temporarily, you can always do the old standby of airplane mode. Enable airplane mode, then enable whatever wireless services you want (Wifi, Bluetooth). The airplane mode will keep the cellular modem completely off.

ronwi2 said:
With GSM it's easy - you take out your SIM card, and you are off that SIM's network.
Presumably the Nexus 5 will work for voice and 3G without the SIM card. Is there some way to turn off CDMA (yes, I know that if there is no SIM I can just turn off all cellular data. But that's not my question.)
Click to expand...
Click to collapse
There should be options under networks to select cdma or gsm. Will find out tomorrow

lafester said:
There should be options under networks to select cdma or gsm. Will find out tomorrow
Click to expand...
Click to collapse
Now that the phone has been out in the wild for a while does anyone know the answer to this question?

The N5 does not allow voice or 3g without a sim for some reason. Perhaps someone will figure out a way to bypass this check at some point.
You can also pick and choose between gsm only, cdma only, lte only etc no problem.

lafester said:
The N5 does not allow voice or 3g without a sim for some reason. Perhaps someone will figure out a way to bypass this check at some point.
You can also pick and choose between gsm only, cdma only, lte only etc no problem.
Click to expand...
Click to collapse
So if you take out the SIM, and you are on Sprint, you can't make phone calls or use 3G data?
I know the Sprint LTE Iphones will work if the SIM is removed, just without LTE.
Maybe that's just a way of keeping things clear to the user - your phone has the identity of whatever SIM you have in at any given time.

lafester said:
The N5 does not allow voice or 3g without a sim for some reason. Perhaps someone will figure out a way to bypass this check at some point.
You can also pick and choose between gsm only, cdma only, lte only etc no problem.
Click to expand...
Click to collapse
That's kinda crappy. What if you want to use another CDMA only provider?

pclov3r said:
That's kinda crappy. What if you want to use another CDMA only provider?
Click to expand...
Click to collapse
I don't think it is compatible with any other CDMA only provider - certainly not with Verizon. Who else is there? Metro is going GSM/LTE.
Or perhaps the SIM is necessary to pick the CDMA provider - most CDMA phones are carreir specific, and they just default to the carrier associated with the phone. In other words, if you turn on an unactivated Sprint or Verizon phone, it automatically goes to the correct carrier. If the Nexus 5 has access to more than one CDMA carrier, perhaps the SIM is the method of selecting the carrier.
I

ronwi2 said:
I don't think it is compatible with any other CDMA only provider - certainly not with Verizon. Who else is there? Metro is going GSM/LTE.
Or perhaps the SIM is necessary to pick the CDMA provider - most CDMA phones are carreir specific, and they just default to the carrier associated with the phone. In other words, if you turn on an unactivated Sprint or Verizon phone, it automatically goes to the correct carrier. If the Nexus 5 has access to more than one CDMA carrier, perhaps the SIM is the method of selecting the carrier.
I
Click to expand...
Click to collapse
PagePlus is one who runs on Verizon and allows any phone. No LTE tho with them.
Also, The carrier on most CDMA phone is determined by the PRL file. This tells the phone which towers to communicate with and it can be changed.
http://en.wikipedia.org/wiki/Preferred_Roaming_List

pclov3r said:
PagePlus is one who runs on Verizon and allows any phone. No LTE tho with them.
Also, The carrier on most CDMA phone is determined by the PRL file. This tells the phone which towers to communicate with and it can be changed.
http://en.wikipedia.org/wiki/Preferred_Roaming_List
Click to expand...
Click to collapse
Presumably then the PRL is preloaded on the Nexus 5 - hence it knows to look for Sprint.
I believe Page Plus as a Verizon MVNO and will only activate Verizon phones, or their own (Page Plus) phones.

ronwi2 said:
I believe Page Plus as a Verizon MVNO and will only activate Verizon phones, or their own (Page Plus) phones.
Click to expand...
Click to collapse
They will activate any CDM phone for a except few exceptions such as if the phone is ESN banned on Verizon, PrePaid Verizon phones, Verizon iphones and Verizon blackberry devices. It's a well known unofficial policy.
To add backing of this you can see my signature
Due to hearing that problem I might look at a S4 or something. I generally like the build quality of Samsung much better than LG.

ronwi2 said:
So if you take out the SIM, and you are on Sprint, you can't make phone calls or use 3G data?
I know the Sprint LTE Iphones will work if the SIM is removed, just without LTE.
Maybe that's just a way of keeping things clear to the user - your phone has the identity of whatever SIM you have in at any given time.
Click to expand...
Click to collapse
Just checked again... you CAN make calls however data is unavailable.

lafester said:
Just checked again... you CAN make calls however data is unavailable.
Click to expand...
Click to collapse
Interesting, but doesn't really make sense that 3G data is unavailable. If you put a GSM LTE SIM in and select CDMA only, will it make calls on Sprint? (Don't mean to tell you what to do, but I think it would be an interesting thing to find out if you were so inclined.)

pclov3r said:
They will activate any CDM phone for a except few exceptions such as if the phone is ESN banned on Verizon, PrePaid Verizon phones, Verizon iphones and Verizon blackberry devices. It's a well known unofficial policy.
To add backing of this you can see my signature
Due to hearing that problem I might look at a S4 or something. I generally like the build quality of Samsung much better than LG.
Click to expand...
Click to collapse
Well, that might be an interesting back door into Verizon. I wonder if there is some way that the Nexus 5 can be flashed or otherwise work on Page Plus. I get there would be no LTE, however.

ronwi2 said:
Well, that might be an interesting back door into Verizon. I wonder if there is some way that the Nexus 5 can be flashed or otherwise work on Page Plus. I get there would be no LTE, however.
Click to expand...
Click to collapse
I hope so but i'm thinking it's going to require some software modification.

pclov3r said:
I hope so but i'm hearing it's going to require some software modification it appears.
Click to expand...
Click to collapse
I guess I really don't understand how CDMA works. With GSM, if the phone is unlocked, it works on any network. CDMA always seems to involve flashing. Although I believe there is so me sort of lock on CDMA phones as well (after all, MSL = Master Subsidy Lock.) I wonder if the CDMA side of the phone is locked to Sprint (we know from other posts there is an MSL code for these phones.)

ronwi2 said:
I guess I really don't understand how CDMA works. With GSM, if the phone is unlocked, it works on any network. CDMA always seems to involve flashing. Although I believe there is so me sort of lock on CDMA phones as well (after all, MSL = Master Subsidy Lock.) I wonder if the CDMA side of the phone is locked to Sprint (we know from other posts there is an MSL code for these phones.)
Click to expand...
Click to collapse
Sure, And you can obtain and change that.

pclov3r said:
Sure, And you can obtain and change that.
Click to expand...
Click to collapse
Is there a way to check the MSL settings without a Sprint SIM?
The #.#.3282#.#. dialer menu doesn't work with a T-Mobile sim...

satadru said:
Is there a way to check the MSL settings without a Sprint SIM?
The #.#.3282#.#. dialer menu doesn't work with a T-Mobile sim...
Click to expand...
Click to collapse
In my experience, none of the *#*#xxxxx#*#* codes work without the SIM inserted. You might even need to be activated on Sprint at the time.

Just to clarify, CDMA in this thread includes WCDMA(3g) too?
So the phone will either go GSM or LTE only, which 3g or HSDPA/HSPA are not available by options?

[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
Click to expand...
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.
Click to expand...
Click to collapse
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
Click to expand...
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.
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
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
Click to expand...
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?!?!?!

N-920T & AT&T Data Issues

Is anyone using the T-Mobile Note 5 on AT&T? I am having data problems where I do not get data, but can send and receive texts, and also make calls. I switch to the Cingular APN and it works, but then goes out.
I have tried the Nxtgen phone apn and also phone apn, and no luck.

I know im not answering your question, but are you able to use the VOLTE feature on your tmobile phone on the at&t network? or even HD calling?

Actually At&t messed up my provisioning. You asked about those features, I would recommend you download Darthstalkers Rom Version 4, choose n9200A, it will install the at&t carrier files.
Just make sure to add the ATT Phone APN, do not use the nextgen phone apn.

Why do you suggest not using NextGen APN. I use it on all my phones and it's perfect your funny

I have been thinking of paying off my unrooted phone and switching to cricket. When I put my IME number to check compatibility it said it wasn't. So, I'm a bit confused. Is this phone compatible with ATT LTE or not. I thought that ATT and Cricket were the same?

sizz-lorr! said:
I have been thinking of paying off my unrooted phone and switching to cricket. When I put my IME number to check compatibility it said it wasn't. So, I'm a bit confused. Is this phone compatible with ATT LTE or not. I thought that ATT and Cricket were the same?
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is your phone unlocked? if not you need to get your phone sim unlocked to get it to work on AT&T network. Im on AT&T and have no issues with data etc.

treoreloaded said:
is your phone unlocked? if not you need to get your phone sim unlocked to get it to work on AT&T network. Im on AT&T and have no issues with data etc.
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No its not unloocked. But I will unlock it soon. Good to now that I can use it on ATT or cricket if I want. Really tired of Tmo.
Thanks.