Related
not sure about sprint, but Verizon when I use to hack motorlas, had the hardest registery to hack, and graphical interface witout flashing a complete new Rom, and I couldn't stand not beinging able to swap out phones with just a SIM card change, Verizon and Sprint, are tooo controlling, and I would avoid them, sure clarity and service are good on the CDMA network, but, I can't stand feeling like I'm being controlled, and the slight degrade in service doesn't offest the negatives
Dalamak said:
not sure about sprint, but Verizon when I use to hack motorlas, had the hardest registery to hack, and graphical interface witout flashing a complete new Rom, and I couldn't stand not beinging able to swap out phones with just a SIM card change, Verizon and Sprint, are tooo controlling, and I would avoid them, sure clarity and service are good on the CDMA network, but, I can't stand feeling like I'm being controlled, and the slight degrade in service doesn't offest the negatives
Click to expand...
Click to collapse
Couple things
1 - CDMA Touch Pro 2 also has SIM slot and should work on GSM networks (I haven't seen it myself so 'should' but the SIM slot is there in the spec) - You can swap whatever SIM car you want in the CDMA TP2.
2 - T-Mob reception at my house sucks
3 - I got 28% monthly service discount for Sprint vs 15% for T-Mob from my employee
Conclusion: What is bad for you isn't bad for everyone...
Actually, the GSM is locked so it only works outside the US. (I think it is hardware locked too so it would be very hard to crack.)
Dalamak said:
not sure about sprint, but Verizon when I use to hack motorlas, had the hardest registery to hack, and graphical interface witout flashing a complete new Rom, and I couldn't stand not beinging able to swap out phones with just a SIM card change, Verizon and Sprint, are tooo controlling, and I would avoid them, sure clarity and service are good on the CDMA network, but, I can't stand feeling like I'm being controlled, and the slight degrade in service doesn't offest the negatives
Click to expand...
Click to collapse
I don't like feeling controlled either, but I like staring at a $500 phone with 0 signal bars even less.
Where I live and drive, any phone running on anything else besides Verizon is as good as a brick.
Sorry man, The Network > All
And honestly, I don't see changing phones as an issue at all. With Verizon you can swap out phones in 10 seconds online via ESN swap. And as for selection, aside from a very few devices like the iPhone or Hero, there are CDMA version of most major US based GSM phones. The only area that CDMA really lacks is that you can't activate overseas phones like some of the rarer Nokia's, but those phones usually don't have US 3G anyway so wtf is the point?
dgourd said:
Actually, the GSM is locked so it only works outside the US. (I think it is hardware locked too so it would be very hard to crack.)
Click to expand...
Click to collapse
Quadband GSM capabilities are available on both Verizon and Sprint's Rhodiums.
According to the sheet from Verizon...
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Verizon Wireless said:
EV-DO, 1X RTT capable (Rev. A capable); GSM Quad Band (GSM/GPRS/EDGE); UMTS / WCDMA / HSDPA / HSUPA
Click to expand...
Click to collapse
That $489 off-contract price point and the un-crippled RAM really makes me think... should I go to Verizon off-contract at $489 or pay $450 on contract at Sprint before rebates?
computerpro3 said:
I don't like feeling controlled either, but I like staring at a $500 phone with 0 signal bars even less.
And as for selection, aside from a very few devices like the iPhone or Hero, there are CDMA version of most major US based GSM phones.
Click to expand...
Click to collapse
Actually, Sprint is coming out with their version of the Hero.
@labsONE
They do have GSM capabilities. The GSM only works oustside the US though. Read the FCC filings. They said they locked the GSM through hardware and firmware so it only works outside US. Inside US, you have CDMA.
dgourd said:
Actually, Sprint is coming out with their version of the Hero.
@labsONE
They do have GSM capabilities. The GSM only works oustside the US though. Read the FCC filings. They said they locked the GSM through hardware and firmware so it only works outside US. Inside US, you have CDMA.
Click to expand...
Click to collapse
I unlocked my Telus version which says the same thing on the box and it works on Rogers in Canada and should work on any network and with any sim. Even tried it with an orange sim from france.
so it only works outside US. Inside US, you have CDMA.
Click to expand...
Click to collapse
it works on Rogers in Canada
Click to expand...
Click to collapse
Um...that would be outside the US. Sorry, felt like being a ****.
I personally like the phone and all of it could be capibilities...
There's a SIM slot and I have a AT&T PAYG card sitting in it - it works fine (this is a Canadian Telus TP2.) Unfortunately I can't get the 3G working yet but I am sure HSPA will be able to be leveraged sooner or later with some tweaks.
CDMA reception is very good and data speeds on EVDO are fast.
Actually both Sprint & Verizon allow you to swap between the phones you are using online.
Verizon allows you to switch even easier, by just grabbing the phone(Verizon) you want to use, and dialing *228, you can activate it via an automated system.
computerjunkie said:
Um...that would be outside the US. Sorry, felt like being a ****.
Click to expand...
Click to collapse
Canadian version from Telus are obviously locked for Canadian other GSM provider... Like your US version it is unlockable.
jessiethe3rd said:
There's a SIM slot and I have a AT&T PAYG card sitting in it - it works fine (this is a Canadian Telus TP2.) Unfortunately I can't get the 3G working yet but I am sure HSPA will be able to be leveraged sooner or later with some tweaks.
CDMA reception is very good and data speeds on EVDO are fast.
Click to expand...
Click to collapse
Enabling 3g with AT&T will be a hardware hack! I dont think its possible that easily!
MightyROM
I have the CDMA U.S. Cellular Version.
I used MightyROM.
It apparently first used a CID Unlock to be able to install itself.
MightyROM is completely Windows from the Ground up as is advertised (freeware) and acts more like an upgrade to windows mobile 6.5 so gives a definite windows feel to it with extended capabilities over the original WM6.5. It allows for Provisioning/Preparing of Data Services to any of the other CDMA carriers but it wouldn't register on Boost Mobile's site after provisioning to Sprint (Sprint owns Boost Mobile) when I tried to activate online and said it was invalid MEID so I'm guessing you have to spoof the MEID # to be able to get it to work on that carrier because it should have worked if it was truly CDMA unlocked and Provisioned to Sprint (I have activated Sprint Phones on Boost Mobile in the Past without much trouble) but I don't know of any way to do that(?) but the CID unlock is essentially a spoof also right so should be able to somehow right? I havn't had a chance to check and see if any of the other carriers would accept the current MEID but I did try a bluetooth PAN connection to a blackberry running on boost (that is actually also a Sprint branded phone lol) but was unsuccessful although it looked like it was about to work for a moment, might need some minor tweaking?
I also popped a couple SIM cards in. The phone seemed to at least partially acknowledge them but the program seemed to be acting buggy so I'm guessing that has to do with another security mechanism blocking it in the extended Flash ROM.
I'm guessing it goes in levels and the next security mechanism is what Olipro call's the security unlock. Still haven't figured out or found any information on what this is or does but apparently it's part of the extended ROM. The might ROM seems to unlock the CDMA and allows to change to Global and GSM modes after install (Before I couldn't change it, it was locked into CDMA only) so I am extremely curious about the extended ROM and what it's programmed to be doing as far as closing/preventing available connections that should be there but aren't. The hardware is definitely there, it's just not being used because it's blocked by the programming. Seem's like it's in the HKEY_LOCAL_MACHINE/System/StorageManager/AutoLoad/Ext_FlashDRV when you have ROOT Superuser access in a Regedit application (I'm using Rescoe Registry app) but I don't know what values to change or try and implement and I don't want to mess anything up so will have to keep searching unless someone knows something?
I've heard that one of the files in the extended *flash ROM is nearly essential to have a working touch screen so I don't want to try to delete it all at least for that reason. Although, If I could correctly identify and locate the essential files needed for the smooth operation like the touch driver then It seems like I could just move them into the main flash ROM and then delete the extended flash ROM Carrier Junk. That would certainly take care of a lot of issues it seems and free up the space/memory?
Anyone know where I can find the Key Values and their associated meanings for the registry?
I also tried flashing a Radio. Even though I am CID unlocked the flash failed so this definitely makes me think there is something to the security lock that Olipro talks about, but as I said, I can't find any info. on it. Help plz?
derekstaroba said:
I have the CDMA U.S. Cellular Version.
I used MightyROM.
It apparently first used a CID Unlock to be able to install itself.
MightyROM is completely Windows from the Ground up as is advertised (freeware) and acts more like an upgrade to windows mobile 6.5 so gives a definite windows feel to it with extended capabilities over the original WM6.5. It allows for Provisioning/Preparing of Data Services to any of the other CDMA carriers but it wouldn't register on Boost Mobile's site after provisioning to Sprint (Sprint owns Boost Mobile) when I tried to activate online and said it was invalid MEID so I'm guessing you have to spoof the MEID # to be able to get it to work on that carrier because it should have worked if it was truly CDMA unlocked and Provisioned to Sprint (I have activated Sprint Phones on Boost Mobile in the Past without much trouble) but I don't know of any way to do that(?) but the CID unlock is essentially a spoof also right so should be able to somehow right? I havn't had a chance to check and see if any of the other carriers would accept the current MEID but I did try a bluetooth PAN connection to a blackberry running on boost (that is actually also a Sprint branded phone lol) but was unsuccessful although it looked like it was about to work for a moment, might need some minor tweaking?
I also popped a couple SIM cards in. The phone seemed to at least partially acknowledge them but the program seemed to be acting buggy so I'm guessing that has to do with another security mechanism blocking it in the extended Flash ROM.
I'm guessing it goes in levels and the next security mechanism is what Olipro call's the security unlock. Still haven't figured out or found any information on what this is or does but apparently it's part of the extended ROM. The might ROM seems to unlock the CDMA and allows to change to Global and GSM modes after install (Before I couldn't change it, it was locked into CDMA only) so I am extremely curious about the extended ROM and what it's programmed to be doing as far as closing/preventing available connections that should be there but aren't. The hardware is definitely there, it's just not being used because it's blocked by the programming. Seem's like it's in the HKEY_LOCAL_MACHINE/System/StorageManager/AutoLoad/Ext_FlashDRV when you have ROOT Superuser access in a Regedit application (I'm using Rescoe Registry app) but I don't know what values to change or try and implement and I don't want to mess anything up so will have to keep searching unless someone knows something?
I've heard that one of the files in the extended *flash ROM is nearly essential to have a working touch screen so I don't want to try to delete it all at least for that reason. Although, If I could correctly identify and locate the essential files needed for the smooth operation like the touch driver then It seems like I could just move them into the main flash ROM and then delete the extended flash ROM Carrier Junk. That would certainly take care of a lot of issues it seems and free up the space/memory?
Anyone know where I can find the Key Values and their associated meanings for the registry?
I also tried flashing a Radio. Even though I am CID unlocked the flash failed so this definitely makes me think there is something to the security lock that Olipro talks about, but as I said, I can't find any info. on it. Help plz?
Click to expand...
Click to collapse
there is no extended rom partition anymore, that was a feature for older htc phones..
don't worry, you can't just delete the touch screen driver accidentally because it's in rom. you would only be able to remove it if cooking a rom
the US GSM networks are blocked in the radio firmware itself.
which radio did you try to flash? before flashing, be sure it's declared as compatible with your device model.
the security unlocker is here: http://forum.xda-developers.com/showthread.php?t=578642
cmonex said:
there is no extended rom partition anymore, that was a feature for older htc phones..
don't worry, you can't just delete the touch screen driver accidentally because it's in rom. you would only be able to remove it if cooking a rom
the US GSM networks are blocked in the radio firmware itself.
which radio did you try to flash? before flashing, be sure it's declared as compatible with your device model.
the security unlocker is here: http://forum.xda-developers.com/showthread.php?t=578642
Click to expand...
Click to collapse
I tried to flash the two sprint radios so far. First I tried the recommended one then I tried the other. I figured I should go with the sprint ones especially since my device is the US. cellular version and that is the RHodium400 or whatever its called that is pretty much identical to the sprint version, aside from some software, as I understand.
I am able to flash any ROM but the security/SIM unlocker is not working. I sent the ticket out just a little while ago. I got it yesterday but I thought since i was using windows 7 that i was going to have to install xp so I was working on getting a partition in my disk drive on computer and got side tracked (Never done before) into learning that but eventually it got so complex (mounted an iso and am supposed to install via grub menu in dos/linux) that I just gave up and figured I would just try and see if I could get installed on windows 7 first. I did, and it ran the first step fine, but won't do the sim unlock. Keeps saying device is in flight mode or IMEI is invalid. So sent the ticket and made another thread.
I was using MightyROM but I reverted back to the stock ROM and tried again. That didn't work.
Trying a few other things now. Gonna try and install Sprint ROM and see if that does anything. I'm guessing I need to change the radio/baseband but every thing I have tried to far fails. I figured the Security unlocker has to do with the radio but I havn't been able to find out a whole lot about it or what it does or what the encryption/restriction on the radio might even be for the U.S. Cell version.
Thanks so much for your reply. It is greatly appreciated
Discovered something interesting?
I just discovered something interesting. I installed the sprint stock ROM and it managed to change the radio/baseband version, but the network still defaults to U.S. Cellular. That is very strange. I would really really like to know what is the security mechanism that is making the phone do this
I'm guessing the radio/SIM is in fact unlocked like the phone says when I go into the SIM Manager thingy but somehow there is some programming from the U.S. Cellular carrier to always default to U.S. Cellular no matter what?!
Yes> This is very Strange. Not at all like an iphone :s
Here is what I have in device information on software:
Radio Version - 1.96.00 WF (Original -I believe- Sprint Stock Radio, Was 2.18.... Before I installed the Sprint Stock ROM/Radio Combo After HardSPL Unlocking -1.0 Olinex )
ROM - Mighty ROM
OS Version - 5.2.2....
Manilla Version 2.5.2012....
etc.... (Not that any of this -other than the radio and the fact that U.S. Cell Default - Seems to matter?)
I am super Confused!
Even mighty ROM Provision To sprint doesn't seem to completely Register. It will Provision and Provision all day long and install cab files all day long but always reverts back to U.S. Cell as the carrier and won't Detect any other networks in Comm. Manager/Phone Settings. I tried GSM and Global modes, and tried just about everything else from manually inputting the baseband frequencies and networks etc...
But like I said, there is an extended Flash Drv in the Registry Edit. You said it's not partitioned? I know flash drives are slightly different and that has something to do with the way it reads,stores, and writes information. But I don't know too much else. I think its supposed to have strong electromagnetic properties and is resistant to static electricity and drops or damage. I am wondering if partitioning a phone is also different from that of partitioning a computer?
Here are the few things I notice in the Registry that seem interesting to me/probable places for me to look:
H_Key Local Machine ... Security/PUshRouter/Security
Subkeys: (Default)
Provider10 - SecProviders.SyncMLSecProvider
Provider20- SecProviders.WAPXMLSecProvider
Provider90- SecProviders.UnauthSecProvider
HKEY_LOCAL_MACHINE/Drivers/BlockDevice/FlashDRV
There is also something Called BtC that is mentioned a lot. There are quite a few drivers and files associated with it.
And of Course : HKEY_LOCAL_MACHINE/Drivers/BuiltIn/Ext_FlashDRV is there. There is also FLASHDRV just below it along with numerous other files listed.
First Subkey of the extended FlashDRV is Defualt followed by:
Dll - OEM_FlashDRV.DLL (OEM is original Equipment Manufacturer? Maybe this is in reference to the carrier, U.S. Cellular?? or just HTC?) Lots of other keys besides that I have no way to identify what they mean.
I really am just trying to learn as I go along though. Don't have much other choice really want to use my phone how I want to use it not how some bs network wants me to use. I have hardware on this device that is completely inactive. I bought the whole phone I didn't buy part of it grrrrr this is like buying a car but not being able to use the back seat wtf lol
alright im on attblue, and i refuse to upgrade. their new plans blow compared to mine, however ive a question.
i know att now imei checks phones for pocketpcs and adds 30$ data if it matches, i know it detects my hermes and displays it in billing control panel.
however, if i slapped a universal on a attplan would they be able to tell it was a pocketpc or could i get away without data?
any input from people would be..very useful.
try putting your sim card in a regular phone then add the data
oh, would they now. How do you know this? what device have you tested it on, and was it international based or an att branded one.
i ask because it seems they can't identify devices that arent ATT
I have done some searching bad have no found what I am looking for. This could very well be because I suck at thinking up good search terms.
Anyways, I am something of a smartphone noob. I have a TMobile vibant, which is my first smartphone. My child loves playing with various apps and games I have downloaded for her.
I had the idea of buying one of the very cheap, poor condition, phones off ebay so I can have my phone back.
My plan would be to never activate it on any cell network. I would connect via my home wifi, download some apps, then put it in airplane mode and let her have fun.
Questions:
1. Most of the cheap-o phones are cdma, which I have no experience with. If I never activate it on a network, am I likely to have any problems? I know that with my phone, if I pull the sim, I can still used it as a pda, but is that true of all phones?\, or do some require some sort of network login first?
2. Is there are way to disable a phone from making emergency calls? I don't want her accidentally doing that.
3. Other than the ethical questions of a "bad esn" phone, would one cause me any problems for this uses?
4. Are there are pitfalls to my idea that I should consider?
i have been using an old phone of my sons that way. its an old samsung moment (sprint) i down load new apps / games and try them out before i put them on my good phone
1. Though there may be some inconveniences with not being connected to a phone network (it will keep telling you to activate or put in your sim card) you will have basically the same ability as if you were connected besides making calls.
2. As far as I know, if the phone is not connected to a network, there is no possibilty of making a call. Some newer phones might be able to call over wifi but probably not.
3. Don't qoute me on it, but esn numbers are used only for cdma (no sim card) phones to connect to the network and for the network to identify what phone it is. When it has a bad esn, it is because it wont connect or activate to the network. You should have no problem.
4. This is something many people do. Its just like having an android iPod touch.
Hit thanks if I helped
Sent from my HD2
so i got the SGS3, and I'm on Metro PCS, so I'm not about to switch carriers just to activate this phone, can anyone help or point me in the right direction to get this phone working without a SIM card?
without the sim card, it will only be a wifi phone.
it is like saying," i have this car without a motor, how can i drive it work."
archangeles said:
so i got the SGS3, and I'm on Metro PCS, so I'm not about to switch carriers just to activate this phone, can anyone help or point me in the right direction to get this phone working without a SIM card?
Click to expand...
Click to collapse
You mean metro pcs does not offer the gs3 but you have one and want to use it on their network?
Where did you get it? Is it the GSM model or Verizon/sprint model.
Metro PCS works on a CDMA network (just like verizon and print) and cdma networks usually do not require a sim card but they can't use a gsm phone either. Verizon's LTE has a sim card that can be accessed (sprint's is hidden) and, according to a thread here, be unlocked to be used with GSM networks.
The easiest way imho is to sell the phone as long as it is not a lost or stolen one. Too difficult to get it to work with the carrier it wasn't made for.
loveubuntu said:
You mean metro pcs does not offer the gs3 but you have one and want to use it on their network?
Where did you get it? Is it the GSM model or Verizon/sprint model.
Metro PCS works on a CDMA network (just like verizon and print) and cdma networks usually do not require a sim card but they can't use a gsm phone either. Verizon's LTE has a sim card that can be accessed (sprint's is hidden) and, according to a thread here, be unlocked to be used with GSM networks.
The easiest way imho is to sell the phone as long as it is not a lost or stolen one. Too difficult to get it to work with the carrier it wasn't made for.
Click to expand...
Click to collapse
it's from Verizon, i got it new from a guy on Craigslist, i usually use my LG esteem and it uses a SIM card and is on metro PCS, so i assumed with unlocking, i could simply put the SIM in the GS3 and have it working too, but in the mean time i would like to play with it as a WiFi only phone and see what i can do with it.
scarrmrcc said:
without the sim card, it will only be a wifi phone.
it is like saying," i have this car without a motor, how can i drive it work."
Click to expand...
Click to collapse
androids are way more than just phones, i believe your analogy is more like the processor is the the phone as the motor is to a car, the ability to make phone calls is just one of the functions, its more like a car that short-circuits while your driving, the engine wont turn off because its mechanical but you don't have the use of anything electrical , unless you use jumper cables which is what i do by activating the WiFi on my LG to use on my GS3.
archangeles said:
androids are way more than just phones, i believe your analogy is more like the processor is the the phone as the motor is to a car, the ability to make phone calls is just one of the functions, its more like a car that short-circuits while your driving, the engine wont turn off because its mechanical but you don't have the use of anything electrical , unless you use jumper cables which is what i do by activating the WiFi on my LG to use on my GS3.
Click to expand...
Click to collapse
The word you're looking for is......anyways.......
Wifi only, that's it. No calls.
I think what many are wondering (after your last post) is why you would buy a VZW phone with absolutely no intention of having it activated or switching carriers just for use on wifi. You thought that "unlocked" meant you could use it on any network?
TechSavvy2 said:
The word you're looking for is......anyways.......
Wifi only, that's it. No calls.
I think what many are wondering (after your last post) is why you would buy a VZW phone with absolutely no intention of having it activated or switching carriers just for use on wifi. You thought that "unlocked" meant you could use it on any network?
Click to expand...
Click to collapse
i have full intentions of using this phone on Metro service, is that so hard to grasp?
You could set up Google Voice and use it as a wifi-only phone...
archangeles said:
i have full intentions of using this phone on Metro service, is that so hard to grasp?
Click to expand...
Click to collapse
Hard to grasp because you aren't very clear.
SiXandSeven8ths said:
Hard to grasp because you aren't very clear.
Click to expand...
Click to collapse
sorry, just tell me what you need to know, i will not hesitate to answer.
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:
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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.