Phone rebooted and said the new carrier functionality was now available. But I read earlier in this forum that I should continue to flash the VZW U1 specific firmware. What would be the purpose of doing this? What am I missing if I stop at all the point where the phone reboots just by inserting the new SIM card?
Thanks!
I don't know what you'd lack other than VZW spamware, maybe there's a feature not enabled?
However, my wife and I did just this - pushed our SIM from our old Galaxy 8+ into the 21+ and didn't look back.
No complaints and 5G service where available (highest D/L bitrate over 110Mbps so far).
Related
I'm performing research into an odd issue that may affect custom ROMs across multiple devices, and I'm hoping a few people can help me.
If you're here, you probably know that Sprint is a CDMA carrier. The SIM card is for LTE only, and so removing it should not affect ability to make calls, and the phone should still get 3G data just fine.
On my stock Lollipop Note 3, it works as expected; a notification bugging me to insert a SIM, but otherwise works fine with 3G.
I had a Samsung rep take the SIM out of his Sprint Marshmallow S6, expecting it would work the same... but instead it completely killed the cell radio. No connection at all, no phone calls, no Mobile Networks option in Settings.
On ports of Note 5 firmware, the phone will connect to the network for phone calls, but absolutely not allow mobile data to turn on. However, this seems to be because the source ROM is GSM only - the Sprint kernel and modem allow it to use CDMA, but the UI still can not fathom having mobile data without a SIM and simply disables the option. The same happens with an S7 ROM port (also from GSM-only source). With a lot of command line %&$#ery, I managed to make it use 3G, but only for about 10 minutes before it catches on and the phone has to reboot.
Now the question I seek to answer is whether the ROM port issue occurs because the source ROM was GSM, or because Samsung just removed the capacity for CDMA-only data from more modern phones. Once I know that, I can work toward fixing it. As such, I humbly request that a few people boot their Sprint Note 5's on stock(-ish) firmware without a SIM card, and let me know if they can use 3G like that.
Cheers! :fingers-crossed:
Newer phones have different hardware. The S6 and Note 5 need the SIM card to authenticate with LTE and with CDMA/EVDO. A rom change will never fix this. This is the next way phone manufacturers and Sprint want new phones to be built. The CDMA and LTE are one authentication.
Your Note 3 had the old way of authentication, where the CDMA portion was separate from LTE. Hence, when the SIM card was removed, 3G worked because the CDMA authentication was embedded into the device.
New phones will not allow this, and honestly, the only reason you were able to use Sprint CDMA without the SIM card is because Sprint has your device ID and let it authenticate for a bit, but then the network itself rejected you because there was no authentication mechanism.
That's... all really a wonderful theory, but the whole point is that current research is indicating it doesn't work the way anyone thinks it does. Even the Samsung rep was shocked that his phone behaved the way it did.
As of right now, I have located one Marshmallow ROM that will allow 3G to work perfectly without a SIM, but have not heard back from the dev on how; it's based off CM, which in my experience will not. The ROMs that don't, don't stop because of authentication issues, they stop purely because of a UI trigger. Otherwise just rebooting wouldn't allow it to be fine for another 10 minutes.
Hence, research. I know all about what it ought to do. And why, and how. I could write a paper on it. I want to know what it does. For that, I ask only for some kind soul to boot their phone without a SIM for two minutes.
That's because its not a theory. It's reality.
In a cdmaOne/CDMA2000 ("CDMA") network, the UICC contains a CSIM application, in addition to 3GPP USIM and SIM applications. A card with all 3 features is called a removable user identity card, or R-UIM. Thus, the R-UIM card can be inserted into CDMA, GSM, or UMTS handsets, and will work in all three cases.
Click to expand...
Click to collapse
Source
I fried my SIM card when I first got the phone by using QPST to try to flash a custom PRL. Not only did the phone power cycle every 5 minutes, but it lost its entire connection to the network. No 3G, no LTE, no 1x. When i went to replace the SIM card, the rep went through about 5 cards until he found one that was actually a UICC card, as the others were ordinary SIM cards just for LTE.
Also, please don't tout research on XDA. Your research is at best an observation with one ROM, and my guess it was a fluke where Sprint didn't reject your connection. Research requires actual proof and peer review. One ROM working one time doesn't warrant research. This isn't an issue with a "UI Trigger" as you put it, but its just the new way phones are authenticated.
Try removing a UICC card from a recent Nexus device (6,5X,6P), it will lose all connection as well. Why? Not because of a UI Trigger, but because new phones need the UICC to authenticate both CDMA and LTE.
Finally, unless that Samsung rep was a Samsung engineer, he is just a salesman with little tech knowledge past what is needed to sell the device.
Similar issue Sprint Note 3
DejitaruJin said:
I'm performing research into an odd issue that may affect custom ROMs across multiple devices, and I'm hoping a few people can help me.
If you're here, you probably know that Sprint is a CDMA carrier. The SIM card is for LTE only, and so removing it should not affect ability to make calls, and the phone should still get 3G data just fine.
On my stock Lollipop Note 3, it works as expected; a notification bugging me to insert a SIM, but otherwise works fine with 3G.
I had a Samsung rep take the SIM out of his Sprint Marshmallow S6, expecting it would work the same... but instead it completely killed the cell radio. No connection at all, no phone calls, no Mobile Networks option in Settings.
On ports of Note 5 firmware, the phone will connect to the network for phone calls, but absolutely not allow mobile data to turn on. However, this seems to be because the source ROM is GSM only - the Sprint kernel and modem allow it to use CDMA, but the UI still can not fathom having mobile data without a SIM and simply disables the option. The same happens with an S7 ROM port (also from GSM-only source). With a lot of command line %&$#ery, I managed to make it use 3G, but only for about 10 minutes before it catches on and the phone has to reboot.
Now the question I seek to answer is whether the ROM port issue occurs because the source ROM was GSM, or because Samsung just removed the capacity for CDMA-only data from more modern phones. Once I know that, I can work toward fixing it. As such, I humbly request that a few people boot their Sprint Note 5's on stock(-ish) firmware without a SIM card, and let me know if they can use 3G like that.
Cheers! :fingers-crossed:
Click to expand...
Click to collapse
Similar issue with HLTESPR (Sprint Note3) moved to Lineage OS 5.8.2 can not make calls with SIM card inserted. Remove the card and the 4 works fine (no LTE). APN and Carrier show up in settings.
Replace the SIM card no APN's no carrier, no phone unless on WiFi.
I brought G930FD galaxy s7 in Singapore during my deployment. It worked fine with other countries sim card. Now i'm back in US tried to use my phone with Verizon sim card
and it didn't work. I got signal but there is no network connection, only Emergency call pop up for a minute then gone.
I tried to adjust the APN but didn't work. Also my phone kept saying "Refreshing Sim Card" couple times. I did some reseach if it's actually region lock but I couldn't find a straight
answer for it. I wonder if this phone is really region lock. If not then what could be a problem for it?
Stal2Gazel2 said:
I brought G930FD galaxy s7 in Singapore during my deployment. It worked fine with other countries sim card. Now i'm back in US tried to use my phone with Verizon sim card
and it didn't work. I got signal but there is no network connection, only Emergency call pop up for a minute then gone.
I tried to adjust the APN but didn't work. Also my phone kept saying "Refreshing Sim Card" couple times. I did some reseach if it's actually region lock but I couldn't find a straight
answer for it. I wonder if this phone is really region lock. If not then what could be a problem for it?
Click to expand...
Click to collapse
From what I know, in order to unlock the region lock, you have to make at least 5 minutes of phone calls in the place you got it. At least this is how it is with the European version I have.
Now about the network issues, if it wasn't a carrier version then it should be unlocked, meaning you can put any Sim card.
My bet, since it's from another country, is that you have to call Verizon and ask them to let it in their network.
I don't believe the G930FD supports CDMA...it is a GSM phone. This is means no compatibility with Verizon or Sprint. You need the US version of the S7 (with the Snapdragon chip) to get CDMA support.
https://www.frequencycheck.com/carr...e-samsung-hero/verizon-wireless-united-states
Hi All. I have unlocked a T-Mobile Note 20 ultra and popped a Verizon sim it it. I have been having issues. First of all right off the bat I noticed that the T-Mobile boot up logo never went away. Previously I've noticed that once I put in a different carriers sim card all the previous apps and bootup screen would get replaced by the new carrier. This did not happen.
There was another issue that I had where it would take 20-40 min to register to the network Everytime I would restart the phone. I solved this by restricting permission to the carrier hub app.
I mainly want it to say Verizon on start up. Anyway to do this
You can either force a CSC change or download and flash the Verizon firmware. There are guides on here.
Having the same issue with my t-mobile variant.
It's unlocked but I cannot get thr CSC to change no matter how I flash it or what Sim I put in.
It's TMB/TMB/TMB.
About to sell it and stick with my pixel
Did your ever get this resolved?
The g100/edge s are listed as no Verizon support, but I was wondering if anyone has tried. They have most of the Verizon 4g bands and 2 of the 5g bands
If anyone is curious about this I have not confirmed but I did find a post where someone tried on reddit. Everything worked except receiving texts. Verizon was unable to troubleshoot because the IMEI was not white listed in their system. After doing some reading this leads me to believe cdmaless needs to be programmed on the SIM prior to putting it in the g100/edge s and it may work. This would require a cdmaless "mule" phone to preprogram the sim prior to installation. If I can find a phone to borrow I may purchase one and give it a shot.
Same problem here. I love the g100, amazing phone especially for the price, but cannot receive texts and Verizon refuses to help with an "unsupported" phone, even though it supports all the bands necessary for operation. 4G works, calls work, and sending SMS and MMS work. I'm willing to try whatever ideas to get this going. Been riding off my old phone as a hotspot for the g100 lately.
ah nice to see I'm not the only one in this situation. You already pulled the trigger though! If you can find a whitelisted gsm phone to swap your sim into and reprogram first you might be up and running. I've been trying to find the cheapest mule to try this with. Will update if a come up with one.
I'm not sure I follow. Why would another phone make this one work?
And I guess what are the requirements of the other phone? I could probably convince a friend to let me swap if it'll work
I'm not 100% sure but I think the issue you are having is the way the line is provisioned. It is most likely set to use the old CDMA radios (the g100 does not have them). Verizon has a cdmaless provisioning setting to get around this, but they can/will only do it for CDMAless phones they have added to their white list (while having compatible 4g and one 5g band the g100 is not on the list). If you put your sim in a white listed CDMAless phone you can get the proper provisioning put on by Verizon before putting it in the g100. This should fix in bound text
Ooh very interesting. I did find stuff for 'cdmaless' in my search to get it working, but asking Verizon to add it yielded terrible results.
So it seems like the cheapest options for this might be the Moto E (2020) or the Moto G Power (2021). I might try to pick one up next week to see if this theory works.
nice! My brother has a s21 which I think will work. Trying to find one that doesn't take 2 months to get
So I ordered a G Power, swapped sim cards and it couldn't receive texts. Activated on the Verizon website, which needed to text me a verification code, hilarious.
Anyway, it added the feature
Code:
CDMA-LESS DEVICE PROVISIONING
to the sim, popped it back into the G100 and... it works!
Great suggestion, drock3260
So when I originally tried to get this to work on Verizon and they insisted that CDMA-less doesn't exist, well, I guess they lied.
So uh, does anyone want to borrow a G Power for 5 mins?
3diord said:
Anyway, it added the feature
Code:
CDMA-LESS DEVICE PROVISIONING
to the sim, popped it back into the G100 and... it works!
Click to expand...
Click to collapse
Thanks for posting about this! I am on V and strongly considering importing an Edge 20 Fusion. This thread gives me hope that it will actually work.
yeah according to kimovil it has compatible bands. If you are still thinking of pulling the trigger good luck.
What about MVNOs using Verizon towers? I plan to use US Mobile SuperLTE. Will text messages work?
It only has the one main 5g band so no I don't believe Verizon mvnos are gonna work. I didn't really care about 5g as there are few towers around me, but I have had great 4g coverage with text messaging
I can give you the best and most accurate answer. I live in America I have a moto g100 there's only one way to get this phone and that is to purchase it through Motorola USA one model option only and that's a blue Moto g100 with 8 gigs of RAM 128 gigs of memory model number xt2125-4 the name of the firmware is North American retail absolutely no bloatware because it's straight from the manufacturer not a cell phone carrier and for absolutely everything to work on the phone 4G 5G the only cell phone carrier that works on is the T-Mobile network. You can use it on the AT&t network but you're not going to get Wi-Fi calling or the 5G Network. It is a GSM only. Absolutely no CDMA nothing will work on the Verizon network. It is the only phone on the American market that dual SIM. It does have NFC. A dedicated Google Assistant button with the fingerprint scanner on the side. One issue though the North American retail will probably be the last one to receive Android 12 but because this is the United States the Android 12 version we get will be very stable
I recently got a Chinese 8/128 Edge S (XT2125-4), and 4G calls/data/sms all just work for me on Verizon.
I had previously activated my SIM card in a OnePlus 8 Pro. So in my case it was already set up for CDMA-less / LTE-only service, and I just had to move the SIM card over to the Edge S and it started working right away.
I've never noticed the phone say it was connected to 5G, but I'm not sure if I need a new sim card, or if there aren't any 5G towers in my area (or both.)
Hello all!
I recently purchased an unlocked Note 20 Ultra 5G, but it was originally an at&t phone (so I have all of their apps), yet I am using my Verizon sim card in the phone. It functions, I have signal, ect. yet I am missing main features I must have such as wifi calling. Model# is SM-N986U and CSC# is N986UOYN2DUE2. I have searched for the lastest VZN firmware on SAMobile for my specific phone, and am currently waiting for that download to complete. However, do you guys think this download (and upload with Odin) will give me full functionally of a Verizon phone?
And if so, do I need to upload the firmware with my sim card in, or out, of the phone in question?
Top notch! fixed with no issues. Fixed by @hainguyenthao