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Here is the full cause of the issue after much research (probably an amalgamation of all the information above + some more)
When you pop in your 4G AT&T SIM and give AT&T the new IMEI (SIM1) to update in the database, they cannot 'see' this device as an LTE capable device and cannot activate/provision LTE for this phone, even though the phone supports all the required AT&T LTE Bands.
Arguing with them using logic is futile as even the most technologically adept 'Tech Support' representatives will repetitively claim, ''We can only guarantee LTE service on an AT&T device'' This is why you can only see H+ (HSPA+) on your device.
There are now two ways to proceed: (first make sure your APN settings or correct)
1) Use an older AT&T device (LTE capable), pop your SIM back into this device. Call customer care and ask them to update the IMEI to this older handset. Restart your phone, verify the LTE/4G signal on your notification bar/ confirm with LTE discovery/ (your favourite tool)
Now, take the sim card and re-insert it in your Zenfone 2. You should now see the '4G' icon on your Zenfone.
Note: AT&T will conduct occasional system-wide sweeps to verify if their SIM cards are actually inserted in the device whose IMEI they have registered and if not, they will update the IMEI on their database and you may lose 4G and rollback to HSPA+.
2) WAIT. I've spoken to Asus regarding the issue and this is a known issue to them. I've been told to expect a modem firmware update (no ETA - don't ask me) after which, somehow, this issue should not be a concern and AT&T will be able to provision the Zenfone 2 IMEI as an LTE capable device.
3) Some amazing workaround by a technically adept AT&T representative who can 'force' LTE registration to the device
4) You tell me.
Very informative regarding LTE provisioning on AT&T. In my experience, once they contenders and remove the LTE. a new SIM will need to be used to get back LTE. Even though the account is provisioned for LTE.
Sent from my ASUS_Z00AD using XDA Free mobile app
AT&T stated they will be offering the ZenFone 2 soon with a contract.
That's crazy! There should be no need for these shenanigans on a GSM carrier. I'm sure the service is leaps better, but I did not have this problem on T-Mobile. I do have a prepaid SIM, so that could make all the difference.
Has to be an issue with certain ZP2's i used an att straightalk sim, and had no issue connecting to LTE at all, i just pop the sim in, searched for networks, registered on att added the straightalk att apns and boom done got full LTE signal on 06610.
Had the same issue with my Nexus 5 originally, a real hassle dealing with support to correct (especially on a corporate account). Currently waiting on ZF2 to arrive, but hoping this is corrected in the latest firmware:
"32. Using HW encode for 4G SKU."
http://www.asus.com/zentalk/forum.php?mod=viewthread&tid=12194&extra=page=1
I am tracking this thread and a related thread and wondering if I need to call AT&T and tell them to delete my ZF2's IMEI. I definitely am only showing H+ symbols and when I did a speed tests, uhm, tests definitely reveal I am not getting LTE speeds. AT&T tried to tell me I am seeing H+ symbol because the ZFT is not an AT&T branded product but I didn't really think this was true. H+ is not the worst of the worst and I really would notice it if I had two phones side by side, but I can live with it more or less if I have to, although yes-I want my LTE back if I can get it - the point is that the ZF2 is capable of LTE and I am very much still on an AT&T contract and honoring my contract on a line that has had LTE for at least 2 years or more now. I just merely bought my own phone this time and needed a new SIM card for it as I had nano on the last one. So-would telling AT&T to lose my IMEI and give me a new SIM put LTE on my ZF2? The APN information matches what is already listed so that is of no use-it seems universal to either H+ or LTE.
babsk said:
I am tracking this thread and a related thread and wondering if I need to call AT&T and tell them to delete my ZF2's IMEI. I definitely am only showing H+ symbols and when I did a speed tests, uhm, tests definitely reveal I am not getting LTE speeds. AT&T tried to tell me I am seeing H+ symbol because the ZFT is not an AT&T branded product but I didn't really think this was true. H+ is not the worst of the worst and I really would notice it if I had two phones side by side, but I can live with it more or less if I have to, although yes-I want my LTE back if I can get it - the point is that the ZF2 is capable of LTE and I am very much still on an AT&T contract and honoring my contract on a line that has had LTE for at least 2 years or more now. I just merely bought my own phone this time and needed a new SIM card for it as I had nano on the last one. So-would telling AT&T to lose my IMEI and give me a new SIM put LTE on my ZF2? The APN information matches what is already listed so that is of no use-it seems universal to either H+ or LTE.
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They need to have an LTE capable AT&T phone first. Then you can switch sim into the ZF2. Had to use my Lumia 635 imei. Unfortunately, once I swith to a non LTE phone, for example, my nexus 4, their system detects it and removes the LTE profile. So, I have to call them again if I want to get LTE on the ZF2.
Sent from my XT1033 using Tapatalk
mrcamp said:
They need to have an LTE capable AT&T phone first. Then you can switch sim into the ZF2. Had to use my Lumia 635 imei. Unfortunately, once I swith to a non LTE phone, for example, my nexus 4, their system detects it and removes the LTE profile. So, I have to call them again if I want to get LTE on the ZF2.
Sent from my XT1033 using Tapatalk
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I have heard that before-hmmm. I would have needed a nano adapter to put the sim from my previous very LTE capable got LTE all the time Lumia phone first and didn't know that ahead of time. But
I did call them and my guess is I am being lied to that they gave me LTE? I now at least can prove it with speed tests and demand that they fix it but how do they do this is at this point
Sent from my K010 using XDA Free mobile app?
I have an unlocked Sprint Samsung S6 and I'm trying to get it to work on Verizon but it doesn't want to work. It shows an exclamation and R where the signal bars are. I have tried setting up the APN and a Verizon rep put the sprint phone in their system, but that didn't work either. Is there any way to get this to work? Do u have to flash Verizon's Rom to it? I noticed that even unlocked it still seems to have the sprint activation stuff..... Please help, scoured the Internet and forums to no avail :/
If you actually got the phone activated onto your line on Verizon, you will need the Verizon PRL on the device for it to show it connected natively to its towers (the 'R' is a roaming indicator...your device is seeing the Verizon towers as roaming since it loaded with a tower list with Sprint towers prioritized). Verizon is still CDMA, so you will need the proper PRL flashed to the phone for it to work, first & foremost, along with your NAM information and all of the Verizon data settings flashed in place of the Sprint data settings. With regard to CDMA switching from Sprint/Sprint-based to Verizon/Verizon-based, there is more to it than merely an ESN swap (activation by an agent) & inserting a SIM.
I am not here to hold your hand through the flashing of anything, but I'm letting you know what will need to be done. These phones have different model numbers for a reason (unlike "hybrids" like newer Nexus devices, newer iPhones & the recently released Moto X Pure). These different models are designated per carrier and the bundled carrier software for many CDMA devices is used in its OTA programming. Sprint devices typically are packed with MSL/SPCs unique to the device and needed to edit the internal NAM & data settings while Verizon branded counterparts have 0s instead of uniques codes. If this is all over your head, you may need to seek the assistance of someone or a company familiar with flashing to get you going if you are hellbent on using THAT device. Good luck.
worked for me but not stable
I also have the s note 5 from sprint and been trying to make it work on verizon. After so many tries in the mobile network setting i got it to partially work. it still have the R symbols on top, which shows your roaming but you will get a 3g speed. My current setting is
Settings>Mobile Networks>Network mode >automatic
Settings>Mobile Networks>data roaming>Roaming network>automatic
Settings>Mobile Networks>data roaming>Roaming guard> all off
Settings>Mobile Networks>data roaming>everything else on
you also have to use the verizon app settings.
i've also tried flashing the prl but had no luck. Any suggestion on how will be appreciated.
So, how about an idiot's guide for making this happen?
If I need help from a vendor, how about posting some referrals, what needs to be done, and how much is fair to pay?
I am a self-professed newb and I just want to take the Sprint S6 that I own outright to Verizon.
Especially because I paid full price for the S6, and Sprint's service sucks inside my building.
Thanks .
What VicFreeze said above is 100% correct, you would have to reprogram/flash the phones CDMA chip/radio and even Verizon will not be able to do so (legally or maybe not smart enough to know how), you want to be on Verizon you need to get one of their phones. Your phone is a G920P, the P is specific to Sprint and the phone has been flashed internally to know the MIED, MDM/MIN, PRL and login passwords for their networks along with the MSL Code direct from the Samsung factory just for Sprint.
So Yeah you can change all this by reprogramming the CDMA chip inside the phone, first you need professional software that will cost $$$ hundreds of dollars, software like CDMA workshop, QPST or DFS will work, learning to use this software is not for newbies, you will also need to get the information from Verizon to flash their carrier specific codes and numbers into the phone, it's not like swapping out your SIM Card like a GSM Phone and your on a different network, this is CDMA and its why Sprint/Verizon use this, its to lock you down. (no, that's not why)(LOL)
Just Google "Carrier programming on CDMA phones"..
I think it would be cheaper to sell your Sprint phone and just get a Verizon phone and save yourself a lot of hassle. Get a G920V, its already flashed with Verizon Codes to access their LTE Network from the Samsung factory (Hence the V is specific for Verizon). Verizon's sales staff might not even know what a CDMA phone is so would you really want them to reprogram it??
dagreek05 said:
I have an unlocked Sprint Samsung S6 and I'm trying to get it to work on Verizon but it doesn't want to work. It shows an exclamation and R where the signal bars are. Is there any way to get this to work? Do u have to flash Verizon's Rom to it? I noticed that even unlocked it still seems to have the sprint activation stuff..... Please help, scoured the Internet and forums to no avail :/
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VicFreeze and MindTricks sound dead on in there advice. One thing I am pretty sure about unless someone corrects me is .... even though Sprint and Verizon are both CDMA, they operate on different frequency bands which is probably why your getting the 'R' for roaming. CDMA Workshop has the ability to change the radio frequency. I think the two companies also encrypt or code their voice and data traffic and you need the software flashed that has their specific decoders or encryption software for the device to work on their system. I am not sure if the specific radio software changes any of this or not. I am not even sure is CDMA Workshop is compatible with newer Samsung phones now as two years ago I programmed my Sprint HTC EVO 4g to work on my Virgin Mobile talk and text plan without much trouble but have not been able to get CDMA Workshop to connect to a Galaxy Grand Prime as of late. What I did two years ago was easier since Virgin runs off of Sprint Service Towers. Having a ROM compiled for Verizon may help but things have changed. What I did with the EVO two years ago ..... the ROM had Sprint radio files compiled with it. I am not sure if some of those files are separated in the system now on more modern devices as ..... back two years ago Sprint was EVDO and not their LTE uses a SIM card to work. So, things have changed and keep changing and evolving. One thing is sure, is almost every year Service Providers along with device manufacturers are changing what they do and how they do it.
tt c6 said:
So, how about an idiot's guide for making this happen?
I just want to take the Sprint S6 that I own outright to Verizon.
Especially because I paid full price for the S6, and Sprint's service sucks inside my building.
Thanks .
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Click to collapse
That's what everyone would love to do but at times proves more hassle than what it is worth. this is why there are sites like Swappa and eBay where you can sell your phone for close to competitive price and pick one up a device that is a comparable condition for the service provider you want to swich to for about a break even price or not much more out of pocket.
I dunno if this thread is dead but process should go something like this.... flash factory binary firmware checking "auto-reboot, nand erase, and F.reset" options. Once it boots enable developer options and oem unlock and usb debugging (then do a factory reset from settings menu). Then you can flash the CSC from Verizon stock. Placing VZW .pit file in appropriate section. Then you can flash the BL,AP,CP files from VZW rom. Personally....this seems like alot of unnecessary work with a great chance for missing something. Might be better to root sprint device and manually install vzw modem files, apns.conf, prl, telephony.db.....better yet why not just flash a custom rom from twrp. thats just one zip file in twrp.
I don't know what I've done differently, but I currently have and use without any problems a Sprint G920P on the nations most reliable network… Verizon. I can tell you that I didn't have to jump through all or any of the hoops that others in this post have outlined. I will tell you what I did ; Flashed G920p with Bigdaddy PL3 Aroma V1.x ,TWRP-3.2.1.0, SuperSu-v2.82, and 3.10.61_Stock_Modified_Kernel_By_Aurora_Rom [email protected]#1. Phone has been unlocked by Idonne apps. I believe that last bit has a lot to do with my success. there is a setting in his app if the phone is to be used on a CDMA network or a GSM network. And not to discredit the person that discouraged you from having a Verizon employee help you but it was he that figured out how to make Verizons system find my phone. Not sure exactly what he did but I saw him take his company phone out of his pocket and scan the sticker on the back of it into the system saying "we will just make the system recognize it". Voila, worked perfectly and continues to operate without flaw on their network. I do get a roam "R", but checking settings indicates that I am not roaming. I live on the border to Canada so it is to be expected, but not the case. As far as Network, device says Preferred Network instead of Verizon. It could say your name for all I care as long as it works! Hope this sheds some light on it for you without having to make all of those unnecessary changes. One last note.... the salesman did say that mine is the first Sprint Device that he has seen on their network.... I guess that makes me special huh? Lol...
I have the LG E980 Optimus G Pro POS phone. Had it unlocked, inserted a cricket sim card and though I can sometimes make calls when it decides to connect, I very rarely get 4G or LTE, mostly its a little "E" with one or two bars of signal. The phone will not send photos but surfs the web on wifi with no issues.
I have read through this forum and found some workarounds with StraightTalk users but can't find anything for Cricket users. I have tried creating an APN with Crickets data but the Authentication Type is restricted from any editing leading me to believe that this phone is locked to AT&T's network regardless of what unlock codes I entered successfully.
When I attempt to make outbound calls the phone usually takes 3-4 attempts as it drops the call and forces me to redial eventually after enough tries it connects but the quality of the call suks monkey nutz.
I don't really know if rooting will help. I did try a workaround straight talk users were having success with where the APN was edited with the SIM card removed but even that was fruitless as the AT&T APN kept showing up over and over again once I reinserted a SIM card.
This phone is slated for air to wall impact testing very soon if this waste of money can't be fixed and my thoughts that AT&T locked this junk down turn out to be true. So if anyone is knowledgeable with Cricket networks using this phone any guidance is appreciated and in advance I humbly bow to your expertise in these matters. THANK YOU.
I use the phone on Cricket network and have had nothing but superb service, I had service with AT&T. I ordered my sim off ebay for Cricket inserted it went through the setup and all is fine. only thing I can think of is your phone is not unlocked... Mine is carrier and boot loader unlocked and rooted, only problem I had was I couldn't send picture mess... spot where you add the APN type was blanked out, that was on stock 4.4.2 I just went with a modded version of 4.4.2 and all is fine... blows att out of the water full bars lte all the time, Hope you get it figured out.. sure glad I switched....
U really dont need a unlocked att phone to use on cricket
Locked att phones work fine too
Cricket runs on the att network and is owned by att
I switched my s4 from att to cricket without unlocking
The cricket salesman also said any att phone would work since its the same network
You must have a diferent issue
I use my att e980 on cricket at this moment
Bought it off ebay and very happy with it
Sent from my LG-E980 using Tapatalk
I have been under the impression for a long time that Verizon phones are unlocked, and had a tech tell me this - contracts stay in effect, but phones are free to come and go. So I took my N7 (for which I pd full retail, no contract) to a prepaid carrier and was able to use it with their SIM for a couple of weeks. It took help from a tech to configure the APN settings, but things worked fine. I did get a constant message in the status bar: not a Verizon SIM. Today the phone will not work, even though it shows many 4G bars, and says: No SIM or SIM not recognized. This message pops up every time I try to dial. I called the prepaid carrier and they said they are sure that Verizon has locked the phone and I should call them to unlock it. (Right!)
I don't know if it's a coincidence, but this happened right after I ordered a cell extender which requires the purchase of its own SIM. At first I thought there must be some confusion involved with this, but tech said he was sure it was a Verizon lock. Any ideas or information? Thanks!
Yes, the Verizon N7 is carrier unlocked; however, this isn't necessarily a prerequisite to using a pre-paid carrier's service if they're already using the same CDMA frequencies (in which case, their most likely just "leasing" their service from Verizon and reselling it as their own - these companies are called MVNO's (Mobile Virtual Network Operators) and there are plenty of them out there).
What I think is most likely happening is that Verizon is temporarily deactivating your SIM card, as if it were a Verizon SIM, due to the fact that you're still using the Verizon Note7 firmware. You have a couple options here:
If you have another phone, and another SIM card, you can do like the rest of us are doing and reactivate the other phone with the other SIM and then pop it into your N7. This will restore service to your Note7 and release the "hold" on the previous SIM, so that you can repeat the process with that card next time Verizon does one of their sweeps (appears to be a weekly event). A pain in the ass? Yes. But, after doing this a few times, I've gotten the process down to about 5 minutes. I just need to make sure I have my spare phone (a Verizon Note 4) nearby wherever I am.
Because the N7 is carrier unlocked and is capable of operating on either CDMA networks (Verizon & Sprint) or GSM networks (T-Mobile & AT&T), you can flash another carrier's firmware (like T-Mobile) and use their pre-paid service, or the pre-paid service of a MVNO that operates on GSM (like Simple Mobile). I use T-Mobile as an example because I know that they are not... yet... disabling SIM Cards (temporary or otherwise), but I can't say, with certainty, that the other two are not either. I do know that all of them have pushed firmware updates to permanently disable the ability to charge the Note7, so, if you go this route, you want to make sure you flash the firmware released circa mid-late October and then do whatever is necessary to block all subsequent updates.
Hope this helps,
Matt
raneym305 said:
Yes, the Verizon N7 is carrier unlocked; however, this isn't necessarily a prerequisite to using a pre-paid carrier's service if they're already using the same CDMA frequencies (in which case, their most likely just "leasing" their service from Verizon and reselling it as their own - these companies are called MVNO's (Mobile Virtual Network Operators) and there are plenty of them out there).
What I think is most likely happening is that Verizon is temporarily deactivating your SIM card, as if it were a Verizon SIM, due to the fact that you're still using the Verizon Note7 firmware. You have a couple options here:
If you have another phone, and another SIM card, you can do like the rest of us are doing and reactivate the other phone with the other SIM and then pop it into your N7. This will restore service to your Note7 and release the "hold" on the previous SIM, so that you can repeat the process with that card next time Verizon does one of their sweeps (appears to be a weekly event). A pain in the ass? Yes. But, after doing this a few times, I've gotten the process down to about 5 minutes. I just need to make sure I have my spare phone (a Verizon Note 4) nearby wherever I am.
Because the N7 is carrier unlocked and is capable of operating on either CDMA networks (Verizon & Sprint) or GSM networks (T-Mobile & AT&T), you can flash another carrier's firmware (like T-Mobile) and use their pre-paid service, or the pre-paid service of a MVNO that operates on GSM (like Simple Mobile). I use T-Mobile as an example because I know that they are not... yet... disabling SIM Cards (temporary or otherwise), but I can't say, with certainty, that the other two are not either. I do know that all of them have pushed firmware updates to permanently disable the ability to charge the Note7, so, if you go this route, you want to make sure you flash the firmware released circa mid-late October and then do whatever is necessary to block all subsequent updates.
Hope this helps,
Matt
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Thanks. It does help and that makes sense. What was odd was that I was still able to access internet (not wi-fi, but network showing 4 bars 4G). I got a new SIM today and when I popped it in, same thing. Are you saying I would have to activate the SIM on a second phone (currently N5 still with Verizon while I prepare to leave them) before putting it back in the N7? Just keep switching SIMs back and forth?
kat3k said:
Thanks. It does help and that makes sense. What was odd was that I was still able to access internet (not wi-fi, but network showing 4 bars 4G). I got a new SIM today and when I popped it in, same thing. Are you saying I would have to activate the SIM on a second phone (currently N5 still with Verizon while I prepare to leave them) before putting it back in the N7? Just keep switching SIMs back and forth?
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It's kind of a crappy solution, and one that I doubt will continue to work forever (or, at least until the N8 is released)... but yeah. That seems to be the only work aground right now.
Sent from my Verizon Samsung Galaxy Note 7 using XDA Labs
raneym305 said:
It's kind of a crappy solution, and one that I doubt will continue to work forever (or, at least until the N8 is released)... but yeah. That seems to be the only work aground right now.
Sent from my Verizon Samsung Galaxy Note 7 using XDA Labs
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Yes, and it's a whole crappy situation. I can accept the recall, but not the hotlining by Verizon. I have learned from this I will never buy a phone from a carrier again. Should have bought non-carrier specific directly from Samsung.
I purchased a tab s4, sm-t837t, t-mobile. Tracfone claims it is compatible with their network, which is t-mobile. Data works on LTE, but calling doesn't. I checked the imei on t-mobile site, and it's not blocked. The tablet is unlocked.
I switched the sim into another device, and it worked for calling. Might there be such a thing as hotswapping sims? Would it help? I also checked the imei on sprint's site, and it also said 'not blocked'. But sprint returned a sim number associated to it that is different than the sim installed presently.
Tracfone has reset the carrier settings several times, to no avail. T-mobile says the tab s4 is not capable of voice over LTE. But in settings > about tablet it says voice AND DATA networkS ARE both LTE. Does that mean it's set up incorrectly?
I think that perhaps this device was never officially removed from the t-mobile network, so its imei is associated with a different phone #. When the carrier sees the imei associated with a different phone number, it blocks that number from registering. Posssible? But data works perfectly.
Samsung claims the issue is carrier related, not device related. I just went in so many different directions so fast, I'm not sure which one to follow. I also think carriers normally notify each other if a device is being used, and which phone # it has.
I think the glitch might be that both the old network and new network are t-mobile, but one is through tracfone. The system may fail in this case, because the network isn't notifying itself, because normally it wouldn't need to. When the new # was assigned, the previous one would be disabled.
Not knowing much about cellular, I really don't which way to go. And my postulates are actually questions.
awesome14 said:
I purchased a tab s4, sm-t837t, t-mobile. Tracfone claims it is compatible with their network, which is t-mobile. Data works on LTE, but calling doesn't. I checked the imei on t-mobile site, and it's not blocked. The tablet is unlocked.
I switched the sim into another device, and it worked for calling. Might there be such a thing as hotswapping sims? Would it help? I also checked the imei on sprint's site, and it also said 'not blocked'. But sprint returned a sim number associated to it that is different than the sim installed presently.
Tracfone has reset the carrier settings several times, to no avail. T-mobile says the tab s4 is not capable of voice over LTE. But in settings > about tablet it says voice AND DATA networkS ARE both LTE. Does that mean it's set up incorrectly?
I think that perhaps this device was never officially removed from the t-mobile network, so its imei is associated with a different phone #. When the carrier sees the imei associated with a different phone number, it blocks that number from registering. Posssible? But data works perfectly.
Samsung claims the issue is carrier related, not device related. I just went in so many different directions so fast, I'm not sure which one to follow. I also think carriers normally notify each other if a device is being used, and which phone # it has.
I think the glitch might be that both the old network and new network are t-mobile, but one is through tracfone. The system may fail in this case, because the network isn't notifying itself, because normally it wouldn't need to. When the new # was assigned, the previous one would be disabled.
Not knowing much about cellular, I really don't which way to go. And my postulates are actually questions.
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The tablet was still on contract with t-mobile. It was too much hassle to straighten it out. I sent it back for a refund.
awesome14 said:
The tablet was still on contract with t-mobile. It was too much hassle to straighten it out. I sent it back for a refund.
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Good call on refund because T837T does not support calling function. Only international Tab S4 have calling function and none of the US variants have it.