Dual CDMA sims? - Moto G4 Questions & Answers

Dual CDMA sims? - Moto G4 Questions & Answers

I was curious if anyone had tried dual CDMA carriers on their dual sim G4s. My understanding is that for 3G cdma voice the device itself is registered as opposed to a 3G GSM which registers the sim, so only one CDMA service could be active at a time. Changing to another CDMA carrier would mean going through Verizon's or Sprints's activation process each time you wanted to change to a different sim (this was my experience with a 3 sim adapter). I'd love to hear someone more knowledgeable chime in on this subject and provide some feedback on whether or not this is how it would work with a dual sim moto G4.
I'd love to have dual CDMA sims because I have free service with ringplus (Sprint MVNO) but it's spotty in rural areas, whereas Verizon has the most solid signal in the remotest regions.....however I think it's a pipedream. I am aware that you can do a CDMA LTE sim switch and get data without a problem (I'v done this with a triple sim adapter), it's voice and text that I'm interested in being able to switch to, without having to go through the activation process. And because I need this voice and data in remote areas without LTE, VOLTE isn't an option.
I hope that isn't too convoluted or arcane a question, I realize it's not a common scenario. But with the Moto 4G being carrier friendly to all the north american providers (GSM and CDMA) and having a dual sim slot, it's the first plausible solution to what I'd like to achieve.

Unfortunately, the only G4 models that have CDMA are the US models (XT1644 G4+, XT1625 G4, XT1607 G4 Play, XT1609 G4 Play for Verizon Prepaid), and the US models are only available in single-SIM format.
From what I've been gathering, there are no dual-SIM CDMA phones that fully work with US carriers available yet. The OnePlus 3 comes sorta close, it's dual-SIM and has CDMA Band 0, which Verizon uses in most markets, but at the moment it either works in 1x/EVDO mode for calls/text, or LTE mode for data. However, it's lacking CDMA Band 1 (Verizon & Sprint) and CDMA Band 10 (Sprint), so it's not ideal. It's also lacking Verizon's main LTE Band 13, and all of Sprint's LTE bands.
Slightly good news, though. The upcoming ZTE Axon 7 is dual-SIM and FCC testing indicates that it fully supports all US carriers, including all Verizon and Sprint CDMA bands.

xtermmin said:
Unfortunately, the only G4 models that have CDMA are the US models (XT1644 G4+, XT1625 G4, XT1607 G4 Play, XT1609 G4 Play for Verizon Prepaid), and the US models are only available in single-SIM format.
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Ah, that's unfortunate.
xtermmin said:
The OnePlus 3 comes sorta close,
Slightly good news, though. The upcoming ZTE Axon 7 is dual-SIM and FCC testing indicates that it fully supports all US carriers, including all Verizon and Sprint CDMA bands.
Click to expand...
Click to collapse
I'll keep an eye on it.
Would the concept work the way I described in the first post though? I'm really curious if the phone would require sprint or verizon activation when switching cdma sims. I don't have a great deal of experience, simply my results with a multisim adapter. I was unable to test the adapter with a verizon and sprint capable phone (like a nexus 6) but tested it with an Verizon samsung s5 using gsm sims and a verizon LTE sim. The gsm sims (various at&t and t-mobile MVNO) were of course no problem, but switching to (or back to) a verizon LTE sim required teh verizon activation process (but not for data, as the LTE was active without activation).
Is it possible to have a dual sim (or even single sim) phone that supports both carriers (Verizon and Sprint) that could switch back and forth, or is the activation process simply inherreient with the way the devices imei's are registered on CDMA networks, and will always be required. For me going through the activation process for Verizon or Sprint when switching sims would simply preclude any practical usefulness with a dual sim cdma capable phone (although it would still have value as a dual sim with a cdma and a gsm sim).
Sorry for the late reply xtermmin and thanks for the info.

devinpatterson said:
Would the concept work the way I described in the first post though? I'm really curious if the phone would require sprint or verizon activation when switching cdma sims. I don't have a great deal of experience, simply my results with a multisim adapter. I was unable to test the adapter with a verizon and sprint capable phone (like a nexus 6) but tested it with an Verizon samsung s5 using gsm sims and a verizon LTE sim. The gsm sims (various at&t and t-mobile MVNO) were of course no problem, but switching to (or back to) a verizon LTE sim required teh verizon activation process (but not for data, as the LTE was active without activation).
Is it possible to have a dual sim (or even single sim) phone that supports both carriers (Verizon and Sprint) that could switch back and forth, or is the activation process simply inherreient with the way the devices imei's are registered on CDMA networks, and will always be required. For me going through the activation process for Verizon or Sprint when switching sims would simply preclude any practical usefulness with a dual sim cdma capable phone (although it would still have value as a dual sim with a cdma and a gsm sim).
Sorry for the late reply xtermmin and thanks for the info.
Click to expand...
Click to collapse
I can't speak for Sprint, as I have Verizon, but I do know that they're more restrictive than Verizon.
On Verizon, the only current restriction is a whitelist when you try to activate a SIM for the first time. You have to use a device that's in Verizon's "activation database", typically Verizon-branded devices, iPhones 6 and up, the Moto X Pure, and (at some point, if not now) the Moto G4 lineup. Once you have an activated SIM, you can stick it into any compatible device (be it from Verizon, another provider's phone, or even an unlocked phone that doesn't officially work on Verizon) and you should be good to go.
For example, I've been using my same Verizon SIM that I got with the HTC Thunderbolt (when it launched in March 2011) in numerous other phones (Verizon phones, US Cellular phones, unlocked phones, even some GSM/LTE-only phones) with no need to contact Verizon or use the website or anything. I've been able to just pop in the SIM, adjust the connection method on the phone if needed, and go.
As for your experience with using a dual-SIM adapter on the Verizon GS5, it might be due to the phone going into "GSM/LTE" mode when you insert a ATT/TMO SIM, but not switching to "CDMA/LTE" mode when you switch to your Verizon SIM (thereby only connecting in LTE mode). Might want to try setting it to Global mode (GSM/CDMA/LTE). The Verizon version probably wasn't tested for dual-SIM use, so it might just be the OS not knowing to switch to the other mode, or it might be an issue with the adapter itself.
Regarding an actual dual-SIM device with both SIMs being CDMA, I'm unsure if it causes any issues, as there's been no phone with that ability released yet (technically, someone can try dual Verizon SIMs in the OP3, but the CDMA implementation on that phone looks to be pretty half-assed, so I wouldn't use it as a baseline). Guess it depends on how the SIM slots are setup (if they share the same IMEI, or if they have different IMEIs for the two slots). If they're the same IMEI, I can see there potentially being issues, but if they're different (which should be the case for any modern name-brand flagship), there shouldn't be.
We'll know more once the Axon 7 releases. Unfortunately, ZTE has said that CDMA support will be coming in a software update later, but at least the phone is physically banded for CDMA, so we won't know for sure until then.

Actually the xt1644 have dual sim slots , one is hidden open the phone and you will find it

Related

Modify Verizon LTE

[Q] I wonder if there is a possible way to use my Thunderbolt LTE SIM in a Xoom or other LTE device Verizon? Also, I would like to know more about LTE frequencies. Like, if I cloned my Verizon SIM with a AT&T LTE Sims, would I be allowed to use AT&T devices on my Verizon account despite the obvious?

Why cloning? Unlock the phone, simple and easy. Sim cloning is getting harder every day, even the old 2g sims with latest encription is hard to clon.it may takes even days..
Lte sims can be used in any lte phones if the phone is not network locked. Remember that sim is not locked to a phone, the thing is phones can be locked to a network via software or cid or nand locking methods. Unlock the phone, use it in any network ( not applicable for cdma phones which can be used in cdma networks ONLY and dont have sim slots ) provided the phone have corresponding network reception bands( hardware limited/ very few times software limited, nothing can be done if u r hardware limited, but software limitations can be unlocked).
Sent from my HTC HD2 using XDA App

befreshshaveivorysalesoap said:
[Q] I wonder if there is a possible way to use my Thunderbolt LTE SIM in a Xoom or other LTE device Verizon? Also, I would like to know more about LTE frequencies. Like, if I cloned my Verizon SIM with a AT&T LTE Sims, would I be allowed to use AT&T devices on my Verizon account despite the obvious?
Click to expand...
Click to collapse
Verizon and AT&T both use the 700Mhz field for their LTE but is the small differences that won't allow Swapping
AT&T - 704 - 746MHZ
Verizon - 746MHZ - 787MHZ
Now if they eventually down the road overlap each other in an identical field then yes its possible but Verizon at the moment is using LTE for DATA only and using CDMA for Voice (for now) while AT&T uses both Voice/Data on its LTE.
But Yes you can switch Verizon LTE Phones all you want.. Your account is tied to the Simcard so swap away... I had an HTC Thunderbolt, bought the Rezound and just hot swapped the simcard without ever telling Verizon and it works .... Now I'm not sure if swapping LTE simcard between a tablet and Phone will work the same way.. I would figure yes since the Tablet is only going to use LTE.. but not 100%

It will work. I use my Rezound's SIM for the phone and my Novatel Jetpack. It shows on my account as the Jetpack, with unlimited talk and text.

Im using my Galaxy Nexus(cdma) micro sim in my "new" iPad, no problems.. unlimited data.. and I use Line2 app as my phone/sms. Im sure google voice sms might work for sms too.

Thanks. This is the answer I was hoping for
Sent from my HTC ThunderBolt using xda premium

sm-g935f does it work with verizon ??

Can anyone tell me if this will work on verizon carrier ? Don't want the locked down verison

I'm pretty sure the International (GM935F) version does NOT support Verizon's CDMA.

Verizon and sprint are the only reason USA doesn't have the faster exynos processor.
Sent from my Star-Tac

Use the following site to check
http://willmyphonework.net
according to this site you should get 4g LTE, but does not work on 2G or 3G
full spec of samsung model is here
http://www.samsung.com/uk/business/business-products/smartphones/smartphones/SM-G935FZKABTU
also note the foot note at the bottom of the results from http://willmyphonework.net,
******
"How To Interpret The Results
When performing a search, you will be presented with three networks: 2G, 3G, and 4G LTE.
For the technical savvy, we have included the network frequencies that match between the mobile device and the network carrier. Also, we consider HSPA+ to be 3G.
Note: Will My Phone Work assumes that your device is unlocked or allowed to be run on the desired mobile network. Certain carriers such as Verizon USA have an "approved list" of devices. This means that although the phone is compatible with the carrier's network frequencies, the device is blocked. Also, some carriers make frequencies/bands available only to specific geographical regions."
********

Has anyone confirmed this?
5teve0 said:
Use the following site to check
http://willmyphonework.net
according to this site you should get 4g LTE, but does not work on 2G or 3G
full spec of samsung model is here
http://www.samsung.com/uk/business/business-products/smartphones/smartphones/SM-G935FZKABTU
also note the foot note at the bottom of the results from http://willmyphonework.net,
******
"How To Interpret The Results
When performing a search, you will be presented with three networks: 2G, 3G, and 4G LTE.
For the technical savvy, we have included the network frequencies that match between the mobile device and the network carrier. Also, we consider HSPA+ to be 3G.
Note: Will My Phone Work assumes that your device is unlocked or allowed to be run on the desired mobile network. Certain carriers such as Verizon USA have an "approved list" of devices. This means that although the phone is compatible with the carrier's network frequencies, the device is blocked. Also, some carriers make frequencies/bands available only to specific geographical regions."
********
Click to expand...
Click to collapse

I'm also interested in this. I'm thinking of buying a G935F so I can root and have complete control over the recovery and ROMs.
I assumed the international (global) variant would support everything. My Galaxy S5 works everywhere including the US and also drops to 3G if necessary on Verizon. The ultimate question is, if I buy a G935F, can I make/receive calls, texts/mms, and get data using a Verizon SIM card? If I'm in a fringe area and it drops 4G, what will happen? Will it just have no service? I have to think it would support 3G/2G. If a person from Europe comes to the US with the G935F and uses a verizon SIM or is in a verizon only area, they would be screwed.
Again, I would think it should just work, no?

It will not work on Verizon because
1. Verizon relies on using the outdated CDMA standard so you can't connect to their "3G" network.
2. Verizon uses non standard version of the VoLTE IMS (so does T-Mobile it seems), so you can't place calls over LTE even if you flash a VoLTE enabled firmware on your GS7
3. Verizon as a carrier is a control freak that doesn't let its costumers use devices that have not been "approved" by their services, therefore, your devices' IMEI have to be white-listed in order to connect to their network.

mathieulh said:
It will not work on Verizon because
1. Verizon relies on using the outdated CDMA standard so you can't connect to their "3G" network.
2. Verizon uses non standard version of the VoLTE IMS (so does T-Mobile it seems), so you can't place calls over LTE even if you flash a VoLTE enabled firmware on your GS7
3. Verizon as a carrier is a control freak that doesn't let its costumers use devices that have not been "approved" by their services, therefore, your devices' IMEI have to be white-listed in order to connect to their network.
Click to expand...
Click to collapse
Already started the process of moving to AT&T...waiting on my work to confirm it. I hope Verizon reads this. It would have been some much simpler if they just unlocked their bootloader and didn't put a ton of crap (bloat) on their stock ROM...then they would have retained this customer.

I was considering the G935FD (dual sim) since my personal phone is AT&T and my work phone is Verizon. I want to consolidate to a single phone. Honestly I only need Verizon for calls and text, not even data, since my AT&T is unlimited. Looks like the international S7 Edge support Verizon's primary LTE band 13 which would technically work for data, but won't connect to their CDMA calling network according to mathieulh.. Now here's the kicker.. the new ZTE Axon 7 is supposedly compatible with Sprint and Verizon, AND it's a dual SIM phone. I know Verizon has to give the final "okay" to have a device activate on their network, but looking at the specs between the Axon 7 and the G935FD (dual sim S7 Edge) on GSMArena, there are essentially NO DIFFERENCES between 2G/3G/4G(LTE) bands between the two devices. The only difference I really see is Cat 6 LTE (300/50Mbps) on the Axon 7 and Cat 9 LTE (450/50Mbps) on the S7 Edge.
Can anyone clear this up? ZTE is literally saying their Axon 7 will work on Verizon, with essentially the same network specs as the S7 Edge international... there MUST be some major defining issue with using the Exynos vs Qualcomm processor when it comes to CDMA connectivity, but I still can't see a spec difference online.

G930f won't work on Verizon
Hey guys so I see this last post is from almost 3 years ago but I like the s7 and I have verizon. I don't like the Verizon variant of the s7 and wanted to try this one, the g930f because it had the same bands for LTE that verizon uses. I thought I could just use Google voice and make calls with data. I've been messing around with it for a few days now and I'm using a pre-registered sim from a Motorola that I bought from Verizon. I cannot get it to register even with data alone. I've tried removing all AP names and then creating several different AP names using Verizon settings. It's a no-go. I'm getting the g930u.
Thank you for reading. Maybe you know a workaround?

How to enable GSM on GS7 (Smg930v)?

Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?

rawfa said:
Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?
Click to expand...
Click to collapse
It won't connect in Brazil because they are GSM-only; whereas VZW is a CDMA-only network. South America is like the EU - mostly,l if not entirely, GSM-only; VZW and Sprint are using different (and not cross-compatible) types of CDMA. Tracfone (and their Safelink lifeline division) is an MVNO that uses T-Mobile and VZW towers for coverage (and thus support both GSM and CDMA phones). Tracfone has both GSM and CDMA SIM kits - however, the SIM kit you purchase must match the target phone. (Some phones, such as the Galaxy Nexus, for example, are available in both sorts - maguro for AT&T Mobility and T-Mobile/Deutsch Telekom, and toro/toroplus for VZW and Sprint; there are even "unified" ROMs (the Tuna versions are neutral in this fashion, and are available from JB to N - PureNexus 7.1.1 for Tuna is my default, and is just one such example). It may be possible to modify the radios to support GSM bands; however, I would not recommend it.

rawfa said:
Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?
Click to expand...
Click to collapse
the phone is gsm unlocked out of the box
my s7 is Verizon on att
flash the unlocked firmware to further unlock all the bands but Verizon unlocks out of the box
---------- Post added at 07:49 AM ---------- Previous post was at 07:47 AM ----------
PGHammer said:
It won't connect in Brazil because they are GSM-only; whereas VZW is a CDMA-only network. South America is like the EU - mostly,l if not entirely, GSM-only; VZW and Sprint are using different (and not cross-compatible) types of CDMA. Tracfone (and their Safelink lifeline division) is an MVNO that uses T-Mobile and VZW towers for coverage (and thus support both GSM and CDMA phones). Tracfone has both GSM and CDMA SIM kits - however, the SIM kit you purchase must match the target phone. (Some phones, such as the Galaxy Nexus, for example, are available in both sorts - maguro for AT&T Mobility and T-Mobile/Deutsch Telekom, and toro/toroplus for VZW and Sprint; there are even "unified" ROMs (the Tuna versions are neutral in this fashion, and are available from JB to N - PureNexus 7.1.1 for Tuna is my default, and is just one such example). It may be possible to modify the radios to support GSM bands; however, I would not recommend it.
Click to expand...
Click to collapse
you do know that almost all Verizon phones now are unlocked out of the box no mods needed
the reason is some of the bands that gsm carriers are not supported by verzion
mine is a Verizon on att rite now no mods at all other than root and stuff
---------- Post added at 07:52 AM ---------- Previous post was at 07:49 AM ----------
rawfa said:
Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?
Click to expand...
Click to collapse
sorry for double posting kinda thing here
the reason its connecting to 4g there is the phone supports the 4g band obviously in brazil
but not some of the others I had this issue with my note 5 not supporting atts 4g band so I would get 2g and 3g but no 4g
again flash the g930u firmware and it seems to unlock all the bands
---------- Post added at 08:06 AM ---------- Previous post was at 07:52 AM ----------
rawfa said:
Hi,
I've found someone in Brazil who is selling a Verizon GS7 (smg930v) at a great price but he claims that it's not working here because it won't recognize the Brazilian mobile network (the bought the phone in the US). He says the phone connects to the 4G network but he is not able to navigate or make phone calls. I find this weird as I've read in many places that Verizon's GS7 are unlocked to work on GSM.
Any thoughts on what can be done?
Click to expand...
Click to collapse
u might try in mobile networks to switch it to global instead of anything else

nrage23 said:
You should be able to put in the GSM sim and set the APN to what the carrier recommends and it works. It may not support all of bands that that carrier uses but it should work. You could also flash the Verizon SM-930v to the firmware for the Unlocked SM-930u via Odin and unlock more of the GSM bands. Most like it is just a APN issue
You have no idea what you are talking about. All Verizon phones are sim unlocked and since the HTC Thunderbolt, they all support a lot but not all GSM bands. All newer Verizon phones are world phones and usually just need the proper APN of the Telecom being used. Again they do not support all GSM bands but the do cover a lot of them that are used internationally.
Click to expand...
Click to collapse
I will second both of these post in every way. Lol. I was thinking it just tryin to keep to myself

Agreed. You could purchase the phone and flash the U firmware. That's what I have done. I have used my Verizon s7 on Att and TMobile through their mnvos respectively

To wrap up in a nutshell what everyone else was saying...
1) The G930V S7s have both CDMA and GSM radios, so will work on both types of network.
2) Verizon phones are NOT network locked.
3) You need to check the GSM frequencies for your local network. The G930V uses GSM 850/900/1800/1900 for 2G & UMTS 850/900/1900/2100 for 3G. If your local network doesn't use any of these bands, the phone won't work for calls/SMS.
4) Flashing the 'U' firmware will only add UMTS 1700. There used to be a way to get into the radio settings and add/remove frequencies using a service code, but I believe that Samsung have locked down that ability.

Great info
Great info!

Sprint SIM unlock?

Is it possible to SIM unlock this phone? I've looked around but the threads I see all require a paid service or things that haven't even been tested. I don't want to throw money at SIM unlocking because I don't trust those paid 3rd party services. Is it even able to be connected to MetroPCS, if anything? I know it's a CDMA and GSM difference, but specs online don't show specified carriers like other phones would unless they support GSM and CDMA like the iPhone and Galaxy S7 and such.

Sprint will do it if you've met their criteria.

madbat99 said:
Sprint will do it if you've met their criteria.
Click to expand...
Click to collapse
I'm not with Sprint anymore. Would they still do it?

savagevegeta said:
I'm not with Sprint anymore. Would they still do it?
Click to expand...
Click to collapse
Doubt it. I think it has to be activated for 6 months first.

I have one and put in another carrier SIM card and it does not prompt for any unlock code. Sprint technicala support is useless

Good luck! I had a sharp aquious crystal with Sprint years ago and they refused to unlock it because I hadn't been with them long enough. ?

cameroncr95 said:
Good luck! I had a sharp aquious crystal with Sprint years ago and they refused to unlock it because I hadn't been with them long enough. ?
Click to expand...
Click to collapse
The Sprint compatible variant of the Moto E4 (xt1766) is likely network locked with carrier implemented encryption. On the Moto E LTE (xt1526), for example, the Sprint compatible variant, GSM functionality was disabled by the provider using a rather clandestine encryption method. Three of the device's partitions, namely, the /hob, /dhob & /pds partitions, were encrypted to prevent any GSM functionality with the global providers. To the best of my knowledge, as of today, no exploit or user-end modification has ever been discovered to decrypt the network restrictions. This is also the case with a number of Lenovo & Motorola Mobility manufactured smartphones, including, it would appear, the Sprint compatible Moto E4.

its possible

I must go back from my previous post and correct the statement I made regarding the SIM lock status of the xt1766 SPerry Moto E4. Unlike many of it's predacessors, the Moto E4 is not network locked via encryption or partition security. In fact, the Sprint/Boost Mobile/Virgin Mobile variants of the xt1766 is not SIM or network locked at all -- at least not in the traditional sense of the term. Rather, the apparent network restrictions are in the stock firmware (Android OS) itself. When the stock ROM is replaced by any of the several custom Android ROMs available for the xt1766 -- LineageOS 14.1, for example, the device will automatically recognize and support SIM cards from GSM networks such as AT&T, T-Mobile, Cricket, H20, etc. It should be noted here that the xt1766 has quad-band GSM capabilities (850/900 1800/1900), support for WCDMA Bands 1, 2, 4, 5 and 8, and supports LTE Bands 1, 2, 4, 5, 7, 8, 12, 13, 17, 25, 26, 44, as well as the newer 1700MHz LTE Band 66. So, if you're using an AT&T SIM or AT&T based MVNO or subsidiary, which uses LTE Bands 2, 4, 5, 12 and 17, voice, SMS/MMS, and 4G/LTE data are fully supported. If you are using a T-Mobile based MVNO or subsidiary, or a T-Mobile SIM, utilizing LTE Bands 2, 4, 12 and 66, you are also fully covered. Outside the United States, please check the specs of your global provider to make sure that the required bands are supported. It's also noteworthy that, whichever GSM provider you are using, it will likely be necessary to go to device SETTINGS>MOBILE NETWORKS and manually configure an Access Point Name (APN) for data and MMS services specific to your provider.

MotoJunkie01 said:
I must go back from my previous post and correct the statement I made regarding the SIM lock status of the xt1766 SPerry Moto E4. Unlike many of it's predacessors, the Moto E4 is not network locked via encryption or partition security. In fact, the Sprint/Boost Mobile/Virgin Mobile variants of the xt1766 is not SIM or network locked at all -- at least not in the traditional sense of the term. Rather, the apparent network restrictions are in the stock firmware (Android OS) itself. When the stock ROM is replaced by any of the several custom Android ROMs available for the xt1766 -- LineageOS 14.1, for example, the device will automatically recognize and support SIM cards from GSM networks such as AT&T, T-Mobile, Cricket, H20, etc. It should be noted here that the xt1766 has quad-band GSM capabilities (850/900 1800/1900), support for WCDMA Bands 1, 2, 4, 5 and 8, and supports LTE Bands 1, 2, 4, 5, 7, 8, 12, 13, 17, 25, 26, 44, as well as the newer 1700MHz LTE Band 66. So, if you're using an AT&T SIM or AT&T based MVNO or subsidiary, which uses LTE Bands 2, 4, 5, 12 and 17, voice, SMS/MMS, and 4G/LTE data are fully supported. If you are using a T-Mobile based MVNO or subsidiary, or a T-Mobile SIM, utilizing LTE Bands 2, 4, 12 and 66, you are also fully covered. Outside the United States, please check the specs of your global provider to make sure that the required bands are supported. It's also noteworthy that, whichever GSM provider you are using, it will likely be necessary to go to device SETTINGS>MOBILE NETWORKS and manually configure an Access Point Name (APN) for data and MMS services specific to your provider.
Click to expand...
Click to collapse
Same with the XT1765 METRO PCS.

MotoJunkie01 said:
The Sprint compatible variant of the Moto E4 (xt1766) is likely network locked with carrier implemented encryption. On the Moto E LTE (xt1526), for example, the Sprint compatible variant, GSM functionality was disabled by the provider using a rather clandestine encryption method. Three of the device's partitions, namely, the /hob, /dhob & /pds partitions, were encrypted to prevent any GSM functionality with the global providers. To the best of my knowledge, as of today, no exploit or user-end modification has ever been discovered to decrypt the network restrictions. This is also the case with a number of Lenovo & Motorola Mobility manufactured smartphones, including, it would appear, the Sprint compatible Moto E4.
Click to expand...
Click to collapse
I have a Sprint Moto E (2015) and it seems that it is only SIM locked to US carriers. A foreign SIM seems to come up just fine without setting anything. Even let me change APN.
There are 3 sellers on eBay selling remote unlock service for the Boost Moto E4. Interestly, they all mention that unlocked E4 will not work in US. Whereas other people running 3rd party ROM has no problem using T-Mobile / AT&T. So I guess their unlock mechanism is different and perhaps bringing the Moto E4 into a state similar to the Sprint Moto E2.

nookin said:
I have a Sprint Moto E (2015) and it seems that it is only SIM locked to US carriers. A foreign SIM seems to come up just fine without setting anything. Even let me change APN.
There are 3 sellers on eBay selling remote unlock service for the Boost Moto E4. Interestly, they all mention that unlocked E4 will not work in US. Whereas other people running 3rd party ROM has no problem using T-Mobile / AT&T. So I guess their unlock mechanism is different and perhaps bringing the Moto E4 into a state similar to the Sprint Moto E2.
Click to expand...
Click to collapse
All Sprint compatible models of the Moto E LTE (2nd Gen) 2015, as you correctly noted, are unlockable for international GSM carriers, but are GSM disabled for domestic use.
The Sprint Moto E4 (xt1766) is not SIM locked at all for domestic GSM usage -- at least not in a technical sense. The GSM restrictions on the xt1766 are coded within the stock firmware. Flashing a custom ROM and the APN fixes and blobs will enable GSM support. On the xt1526, GSM service is disabled via embedded encryption to the /pds, /hob and /dhob partitions. To the best of my knowledge, nobody has been yet successful in disabling it.
On the Moto E4 xt1766, the launch version of the firmware allows domestic GSM support, and even allows APN editing.
While I realize I've previously mentioned these points, I'm pointing out the key differences in Sprint's policies of carrier locking between the Moto E LTE (xt1526) and the Moto E4 (xt1766). The xt1526 was based on partition encryption, which is not alterable. And the xt1766 is firmware based, which obviously can be modified and removed.

MotoJunkie01 said:
All Sprint compatible models of the Moto E LTE (2nd Gen) 2015, as you correctly noted, are unlockable for international GSM carriers, but are GSM disabled for domestic use.
The Sprint Moto E4 (xt1766) is not SIM locked at all for domestic GSM usage -- at least not in a technical sense. The GSM restrictions on the xt1766 are coded within the stock firmware. Flashing a custom ROM and the APN fixes and blobs will enable GSM support. On the xt1526, GSM service is disabled via embedded encryption to the /pds, /hob and /dhob partitions. To the best of my knowledge, nobody has been yet successful in disabling it.
On the Moto E4 xt1766, the launch version of the firmware allows domestic GSM support, and even allows APN editing.
While I realize I've previously mentioned these points, I'm pointing out the key differences in Sprint's policies of carrier locking between the Moto E LTE (xt1526) and the Moto E4 (xt1766). The xt1526 was based on partition encryption, which is not alterable. And the xt1766 is firmware based, which obviously can be modified and removed.
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Hi, I have a sprint Moto E4 (xt1766) that is rooted and has lineage OS installed as per https://forum.xda-developers.com/mo...neageos-14-1-moto-e4-qualcomm-t3690156/page36 but I get a No SIM when I put in a US TMobile SIM. (Without a SIM, I get "No SIM card -- Emergency calls only" so clearly, the phone recognizes the SIM. And the SIM works fine on a Nexus 4.)
I wonder what I need to do to get the SIM working on my XT1766. Any suggestions are appreciated. Thanks again in advance.

aarem said:
Hi, I have a sprint Moto E4 (xt1766) that is rooted and has lineage OS installed as per https://forum.xda-developers.com/mo...neageos-14-1-moto-e4-qualcomm-t3690156/page36 but I get a No SIM when I put in a US TMobile SIM. (Without a SIM, I get "No SIM card -- Emergency calls only" so clearly, the phone recognizes the SIM. And the SIM works fine on a Nexus 4.)
I wonder what I need to do to get the SIM working on my XT1766. Any suggestions are appreciated. Thanks again in advance.
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It is too late now. You must have picked up one of the security update which secretly locks your phone to sprint.

If you're looking for a quick way to unlock your phone, look no further. Our staff is always available 24/7 and can provide multiple services at competitive rates. For example, if you don't know the network your phone was initially locked on, we offer an affordable option that can tell you within minutes through our Apple GSX Network Check service

H918 -- Why won't it work on Verizon despite lack of CDMA support?

I've had this thing since early winter, and at first verizon thought it would work. I've even had it log onto verizon towers (via looking at phone info in settings) before
I know the radios for CDMA are missing, but the LTE bands are there. Verizon does NOT REQUIRE phones to support CDMA anymore. Why can't we make the h918 work/register properly on verizon? Yes, it is unlocked.

I'm very interested in this as well.
I have a H918 LG V20, I travel internationally and I use this phone with all SIM cards... But why doesn't it work with a Verizon SIM card?
I have problems with AT&T also for some reason.
I've had previous Android devices like the LG G5 variant and that worked fine on Verizon, AT&T, and Internationally.

technocrat7 said:
I'm very interested in this as well.
I have a H918 LG V20, I travel internationally and I use this phone with all SIM cards... But why doesn't it work with a Verizon SIM card?
I have problems with AT&T also for some reason.
I've had previous Android devices like the LG G5 variant and that worked fine on Verizon, AT&T, and Internationally.
Click to expand...
Click to collapse
I don't use Verizon, but here's my guess:
For calls and SMS to work on a carrier on LTE only, you'll need VoLTE support. And at least for the major U.S. carriers, they each decide through some sort of certification which phones are allowed to get VoLTE. This will be more important in a few years when all the carriers go LTE-only after dropping all 2G/3G/CDMA networks. Currently on Verizon, if a phone can't get VoLTE, it would rely on CDMA for calls and text messages. Since the H918 isn't whitelisted for VoLTE and doesn't have CDMA bands, it won't work properly on Verizon's network. It can only get VoLTE on the T-Mobile network in the U.S.

Database Users

welcome