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I've been trying to troubleshoot this problem for the past 3 days or so. In a nutshell, I'm on AllainceRom (which I have been since released) and get constant 4G signal. Wake up, head to work and notice no signal at all. I check and my mobile data was shut off, so connected it. It gets a connection...3G. Turn on/off airplane mode and still 3G. Borrow friends sim card, boot it up and it's 4G. Figuring it's the sim card, I buy a new one. Call Verizon to activate it, BAMM 4G is back. Within 2 minutes after the phone call, it loses signal, then kicks back on, 3G again. I would hit airplane mode on/off and 4G would pop out and all of a sudden it would go back to showing nothing,then revert to 3G again. Any ideas of what can cause this? I'm baffled. I even downloaded the MF1 versus ML1 and it still shows 3G. My download speeds, a blazing 2 megs. Almost feel like I've been throttled or something for some reason.
Has your phone been working fine before and this just started happening over the past few days? Also do you only lose 4G in certain areas?
I know that it is recommended to flash the ML1 modem on any 4.3 based ROM because of potential 4G issues.
This might sound odd, but I think somehow they are throttling me. I'm on the grandfathered unlimited plan. What's odd is that I can take an old sim card (from Thunderbolt), basically cut it to the same size as my S3, reboot and 4G is constant (this phone is part of my dummy line so limited to 2gigs per month). Take out that card, put in new one, it boots up and has like 4 bars while searching for signal, then drops to like 3 and connects to 3G again constant.
4G has been constant here for the past 2 years, Verizon tech support confirmed no outages. My wife and son have unlimited as well, but iphone 4's with 3G coverage. Thinking my unlimited 4G is getting knocked down for some reason.
I tried a new rom, Clean Rom and same results with signal quality. Just odd it happening all of a sudden with no changes.
Also, with my thunderbolt 4G sim card, mobile network type was listed as LTE. With the brand new sim card they activated, it's showing "CDMA -eHRPD", as it was showing with my old card.
BattsNotIncld said:
Has your phone been working fine before and this just started happening over the past few days? Also do you only lose 4G in certain areas?
I know that it is recommended to flash the ML1 modem on any 4.3 based ROM because of potential 4G issues.
Click to expand...
Click to collapse
snafufx said:
This might sound odd, but I think somehow they are throttling me. I'm on the grandfathered unlimited plan. What's odd is that I can take an old sim card (from Thunderbolt), basically cut it to the same size as my S3, reboot and 4G is constant (this phone is part of my dummy line so limited to 2gigs per month). Take out that card, put in new one, it boots up and has like 4 bars while searching for signal, then drops to like 3 and connects to 3G again constant.
4G has been constant here for the past 2 years, Verizon tech support confirmed no outages. My wife and son have unlimited as well, but iphone 4's with 3G coverage. Thinking my unlimited 4G is getting knocked down for some reason.
I tried a new rom, Clean Rom and same results with signal quality. Just odd it happening all of a sudden with no changes.
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Click to collapse
I doubt you are getting throttled. Unless you are using up 100+ GB a month constantly. If that was the case you can call tech support and ask if you are. I'm pretty sure they would have to tell you if they were.
Was there something specific you did to your phone before this started happening? Have you tried different ROMs or re-flashing Alliance?
If you've exhausted all options I think something is borked and you need to reprovision. To do this you would need to ODIN to a stock 4.1.2 base and enter the reprovision code into the dialer (*2767*3855#). This will wipe your internal data so I would back up anything you need first. Once you do that you can re-root and flash a custom recovery then flash back to whatever you want.
Just make sure you don't take the 4.3 OTA if you return to stock unless you want to re-lock your bootloader.
That's the odd thing, nothing was changed prior to this switching to 3G, like it happened all of a sudden. I checked my usage and I'm at 19 gigs this month (yeah I tether a lot).
I tried beanstalk rom (4.4.2) and something odd happened. In preferred network type, under CDMA+LTE/EVDO I would get 3G. If I switch it to LTE/GSM/WCDMA 4G would pop up, but no mobile data so unable to make phone calls. With this rom, I would insert my old thunderbolt sim card and 4G all day long again with no issues.
I guess the only option would be to revert to stock and start all over in hopes it'll switch back. I was hoping it was just the icons jacked up, but at 3G my d/l speed was 2 megs, at 4G it would hit 12-14 megs.
BattsNotIncld said:
I doubt you are getting throttled. Unless you are using up 100+ GB a month constantly. If that was the case you can call tech support and ask if you are. I'm pretty sure they would have to tell you if they were.
Was there something specific you did to your phone before this started happening? Have you tried different ROMs or re-flashing Alliance?
If you've exhausted all options I think something is borked and you need to reprovision. To do this you would need to ODIN to a stock 4.1.2 base and enter the reprovision code into the dialer (*2767*3855#). This will wipe your internal data so I would back up anything you need first. Once you do that you can re-root and flash a custom recovery then flash back to whatever you want.
Just make sure you don't take the 4.3 OTA if you return to stock unless you want to re-lock your bootloader.
Click to expand...
Click to collapse
If other SIM cards are working correctly, it can't be anything wrong with the phone. I would either go to Verizon and keep asking for new SIM cards until you get one that works, or try to reprovision like I explained earlier.
Thanks for the suggestions, I'm rocking stock 4.0.4. now and still only have 3G service. Guess I'll just keep it like this and hit up the Verizon store and have them figure it out since it's stocked back out.
BattsNotIncld said:
If other SIM cards are working correctly, it can't be anything wrong with the phone. I would either go to Verizon and keep asking for new SIM cards until you get one that works, or try to reprovision like I explained earlier.
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Click to collapse
I was experiencing similar issues as you this morning. After an hour of the nice lady at tier 1 tech support telling me to erase everything on my phone and that it was probably bc I was talking to her on the phone while trying to fix it I reached a resolution upon calling back. I was sent to a higher tier tech support and they told me that my data was being throttled and it was directly related to my high data usage.
Confused I asked her how that was possible bc they aren't suppose to throttle LTE. She said there is a problem with their system and instead of only throttling 3G, it was now throttling LTE data. She explained this is a nationwide issue and that some people she has talked to have been experiencing trouble with this issue since March 23rd!!
Similar to you I tried another phone, my nexus galaxy only to experience the same problem. The only thing that worked for me was switching my network mode from LTE/CDMA to Global. I could then tether Netflix and use the data connection without being impeded. However, certain functions like my email (gmail and yahoo) and verizon cloud services would say network error or network communication error.
Strangely tonight my phone seems to be back in working order, I'm not sure if its just because there is no network congestion so I'm not being throttled and it will return or if the issue has been actually fixed.
Now that I think about it, it's possible the tech was wrong and it's a CDMA to lte handshake issue they are having which would explain why global mode would work? It maybe that they upgraded the towers to lte advanced in my area causing these types of issues but hard to confirm any of this with verizon being so tight lipped about what areas have lte advanced.
Replied to your post, I'll update once I get back from Verizon.
Samutd45 said:
I was experiencing similar issues as you this morning. After an hour of the nice lady at tier 1 tech support telling me to erase everything on my phone and that it was probably bc I was talking to her on the phone while trying to fix it I reached a resolution upon calling back. I was sent to a higher tier tech support and they told me that my data was being throttled and it was directly related to my high data usage.
Confused I asked her how that was possible bc they aren't suppose to throttle LTE. She said there is a problem with their system and instead of only throttling 3G, it was now throttling LTE data. She explained this is a nationwide issue and that some people she has talked to have been experiencing trouble with this issue since March 23rd!!
Similar to you I tried another phone, my nexus galaxy only to experience the same problem. The only thing that worked for me was switching my network mode from LTE/CDMA to Global. I could then tether Netflix and use the data connection without being impeded. However, certain functions like my email (gmail and yahoo) and verizon cloud services would say network error or network communication error.
Strangely tonight my phone seems to be back in working order, I'm not sure if its just because there is no network congestion so I'm not being throttled and it will return or if the issue has been actually fixed.
Now that I think about it, it's possible the tech was wrong and it's a CDMA to lte handshake issue they are having which would explain why global mode would work? It maybe that they upgraded the towers to lte advanced in my area causing these types of issues but hard to confirm any of this with verizon being so tight lipped about what areas have lte advanced.
Click to expand...
Click to collapse
So, I flashed CM11 today, and I'm not sure if it's just this specific rom or what (I had poweruser modified stock before) and it seems like my data speeds are really slow.
I had 5 bars with H+ (yes not LTE I know) but I was only getting 1 mb/s down speed.
Is there a baseband I can flash or some type of modem. Does anyone else have this issue?
Bump
Well,
I'm sorry that I can't exactly help your situation, But I can say that I am having a very similar issue. I am running D800 AT&T, CloudyStock V2.0 with dr87's Simple Kernel V5. Only have one APN, which the the Phone APN. Now, I do receive LTE, it also shows up on my phone as 4G.
I have also changed that lil bit in the Build.prop to my destination Country, which is US. But, anyway, After all of this I can only get maybe 2mbps downloads and if i'm lucky I will pull 1mbps upload.
I know for a fact that the LTE in my town is not that slow. I'm not really sure what is going on either.
Before I had CloudyStock on my G2 I could get around 11-12mps downloads with 4-5mbps uploads.
Sorry that I can't really help you out OP. I need help as well.
Since you mentioned, I have an AT&T with a T-mobile micro sim and the network signal (not data) has been very poor since I got the phone. Usually just 2 or 3 bars and completely lost the signal when I got down to the subway underground. I noticed that people were still using their phones while on the train so they could actually receive signals. I believe it's something to do with the sim but not for sure. I haven't had a chance to borrow anyone else's sim to try on mine so I couldn't really tell. I'm running CM 11 as well and I think the battery life has been reduced because of the weak network signal
Any help?
Just got my Shield LTE today. This is my first tablet ever as well as my first unlocked device ever so I've never really had to mess with APN settings before. Long story short, I can connect and get HSPA+ ok but the speeds suck and no LTE at all. My Galaxy S5 can pick up LTE fine and get around 50Mbps down, but the Shield gets only about 5 down on HSPA+. When I search for network operators, my only choices are T-Mobile (2G/3G) and AT&T (2G/3G/4G). Any ideas as to why it can't find T-Mobile LTE network?
Does your phone work with LTE in the same spot? I got my tablet yesterday and moved the TMO SIM from by iPad to the Shield. Got LTE right away without doing anything with APNs. Depending on where you are, TMO LTE coverage is spotty.
Yes. My Galaxy S5 gets about 3 bars on LTE while sitting right next to my tablet that only has 2 bars on 3G. Just got off the phone with T-Mobile and they said they could see me connect to the LTE network and I did see LTE come up on the Shield for a moment but then it almost immediately dropped back HSPA+. I think its an issue with the tablet itself. I'm on hold with Nvidia now.
I'm still trying to get my Shield LTE activated on T-Mobile for the 200 MB free data for life deal. T-Mobile told me that their system saw the Shield's IMEI as a phone, not a tablet, and to bring it into a store so they can see that it is indeed a tablet.
The APN Settings came down by default for me and appeared correct with what I've searched online, but I'm having the same issue where I'm not getting LTE here in the PHX market, in all the places my phone gets full healthy LTE.
I don't want to complain about my H+ signal, but it's just not cutting the mustard if you will.
You find/hear anything useful here Hoju?
I'm seeing the same issue With LTE/Tmobile alsnly HSPA+
I've been in contact with Nvidia support since last week and they have had me send them numorous diagnostic files and bug reports. From what I can tell, the Shield is using NVIDIA
's Icera i500 modem which can be thoroughly tweaked through software updates. I'm hoping this issue can be resolved with such an update. Nvidia level 2 support told me that I was the first case of this reported, so I urge everyone suffering from this issue to contact support so they can see that the problem is not an isolated incident. I'm hoping to hear back from them today regarding this. I will update the thread when I do.
T-Mobile setup my imei number as an iPad to activate sim and didn't give me the pin, called T-Mobile and got it fixed, the pin turned out to be 1234, once he fixed the imei and changed pin, internet started working well and LTE is working as well. Also logged into T-Mobile.com/connectme I'm not sure if that's required but that's where you can buy more data. Hope that helps someone
Hi there, T-Mobile retail dealer here. I've tried 4 different T-Mobile sim cards (2 $50 simple choice plans, 2 $70 simple choice plans) along with 4 of their MVNO's sim cards (Univision Mobile, Straight Talk, Ultra Mobile, Lyca Mobile) and they all had LTE.
With all of the T-Mobile sim cards, the standard APN that's loaded in (fast.t-mobile.com) works perfectly for me.
For the MVNOs, using their respective APNs allowed for LTE, while using "fast.t-mobile.com" on those services only gave me HSPA+
I'm also located right outside of Philadelphia. Not really a populous area but we have good coverage with T-Mobile around here.
Hope this helped.
I also just added ro.ril.fast.dormancy.rule=0 to my build.prop, result so far is stable connection on h+. Without that it was flipping between 3g and h+ constantly and connection was unstable. ive been streaming music and it did change back to 3g, but not back and fourth like before, ill keep an eye on it.
maybe i spoke to soon, i still see it switching. Ill update after some more testing if this did anything or not for me.
genicles said:
I also just added ro.ril.fast.dormancy.rule=0 to my build.prop, result so far is stable connection on h+. Without that it was flipping between 3g and h+ constantly and connection was unstable. ive been streaming music and it did change back to 3g, but not back and fourth like before, ill keep an eye on it.
maybe i spoke to soon, i still see it switching. Ill update after some more testing if this did anything or not for me.
Click to expand...
Click to collapse
Just out of curiosity have you noticed a difference in the last three days overall?
livinonnoslp said:
Just out of curiosity have you noticed a difference in the last three days overall?
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Click to collapse
Not really, guess it was a placebo effect at first and just happened to stay on h+ for a while. from what i have read over the last few days is that on t-mobile's network it switches to 3g to save battery. I just removed the line i added, streaming music right now and just got a drop out. If someone knows or comes up with a way to force it on h+ I would happy, i could care less about battery savings if i just have this thing on my desk plugged in all day.
I got some time today, going to try staying off of wifi all day and see how it acts, might try a couple things if i can find some other options to test. if i find something ill let ya know.
genicles said:
Not really, guess it was a placebo effect at first and just happened to stay on h+ for a while. from what i have read over the last few days is that on t-mobile's network it switches to 3g to save battery. I just removed the line i added, streaming music right now and just got a drop out. If someone knows or comes up with a way to force it on h+ I would happy, i could care less about battery savings if i just have this thing on my desk plugged in all day.
I got some time today, going to try staying off of wifi all day and see how it acts, might try a couple things if i can find some other options to test. if i find something ill let ya know.
Click to expand...
Click to collapse
Thanks for the response. I ended up exchanging mine with a new one that I just received last night. Right now I'm still testing and hopeful it will shape up, mine would drop from H+ to Edge, I do get LTE from time to time but it's very sparse. So far the replacement is doing well but i'm more and more convinced this is a radio issue as the tablet was really certified on AT&T. I've filed a ticket on my old one with Nvidia, no eta on a fix. Anyone that's seeing this go through nvidia support and file a ticket. Hopefully they can get it fixed in the next OTA.
I, too, only get H+ signal from TMO on my Shield. While it's normally fast, it sometimes drops and goes to E(DGE) or none at all.
EDIT: TMO could find nothing on their end via online chat. I'm going to test the SIM in another LTE device, and see if its a SIM issue. Waiting to hear back from NVIDIA. Really hoping our coming-soon 5.0 update fixes this!
EDIT 2: I just heard back from them that the TMO issue is an open bug "and will be fixed in a future update".
shield vs lte?
Yours at least connects, mine wont even do that I probably go to local branch again tomorrow if things wont change by the morning. I hope it works, but i cant activate the sim. Shield recognizes the card, under connections it says T-mobile but every time i turn off WiFi and try to activate the sim via cellular data, it keep telling me theres no connection yet i have 2 bars of their signal
So this means that I could but the 30 dollar a month plan? 5GB data, 100 minutes and unlimited texts?
Did anyone that was having a problem with LTE ever get it resolved? I just picked up the LTE version of the Shield tablet and have yet to see LTE and my phone is getting it fine. I hope a solution was found.
caseyatbt said:
Did anyone that was having a problem with LTE ever get it resolved? I just picked up the LTE version of the Shield tablet and have yet to see LTE and my phone is getting it fine. I hope a solution was found.
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Click to collapse
Yep, I'd be interested as well. I got that tablet since a few months and have problems with the radio too. I'm running LingeageOS 14.1. The latest few builds didn't even find the sim card anymore. Today I got back to stock rom for testing. Sim card is there, but it loses the radio connection every few seconds.
---------- Post added at 08:59 PM ---------- Previous post was at 08:04 PM ----------
I just tried T-Mobile: works like a charm. It seems like Vodafone is causing the trouble. I've tried two different SIM cards and have the problem with both. Country: Germany.
caseyatbt said:
Did anyone that was having a problem with LTE ever get it resolved? I just picked up the LTE version of the Shield tablet and have yet to see LTE and my phone is getting it fine. I hope a solution was found.
Click to expand...
Click to collapse
What LTE band is your phone connecting to? I'm assuming you are T-Mobile? If you're in a band 12 area you might be out of luch as the North American version supports bands 2, 4, 5, 17, 7.
Hello from Bulgaria.Some one have had a problem with 4g network.Samsung S7 when he was lte \ 3g \ 2g after 30-40 minutes , scope disappears and receives a missed call notification.The problem gone after restart the device and after 30-40 minutes is same situation.If a phone is an 3g\2g no problems.
Sorry for my bad english.
Same here
My cousin bought an S7 Edge, but it had the same problems as listed. She then proceeded to change the phone, yet the other S7 Edge had the same problem. What could be the solution to this problem, and what caused it?
I change 3 phone 2 black and now give to me gold,for now i don't have a problem with the gold piece. Everything work fine.
Gachev said:
I change 3 phone 2 black and now give to me gold,for now i don't have a problem with the gold piece. Everything work fine.
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Click to collapse
We changed two gold ones, awaiting for the third. Problem seems to be persistent.
Hi!
Go to settings and find your APN-settings. Remove IPv6 and save it. Then everything should work fine.
I'm having the same problem. I'm sitting beside my friend with his ip6s+ and he's not having trouble connecting with the lte. just saying that this might not be just a network problem.
I've read about multiple people, including me having this issue, for some the APN IPv4 switch seems to work, but not for everyone. So what is this? Is it related to the phone hardware or software? Or is it a network problem? And will it be fixed? As this is starting to irritate me a bit..
Many People in my country (indonesia) is having similar problem. The signal somehow stuck in 3g. Forcing it to use LTE only using the app "4G LTE Switch) makes the signal gone, emergency only mode. Only a reboot would bring 4g back.
However it only acts up when using one specific mobile provider (telkomsel). Switching to my second sim, also by the same provider, didnt help. But if I switched to another provider, the problem doesnt happen.
Widespread issue in Germany as well. It's carrier independent. Had to exchange one unit. The new S7 Edge I got works fine so far, but has a pink hue on the display. Samsung QA! -.-
Any solutions or updates?
Solved?!
Hi,
I had the same problem in bulgaria with telenor.
Yesterday i got an update on my s7 edge to XXU1APCH and it seems to solve it.
This night it stayed connected. Normally i had the no service available in the morning.
Anybody else see the same?
heinda said:
Hi,
I had the same problem in bulgaria with telenor.
Yesterday i got an update on my s7 edge to XXU1APCH and it seems to solve it.
This night it stayed connected. Normally i had the no service available in the morning.
Anybody else see the same?
Click to expand...
Click to collapse
Havent got any updates here in my country.
Would u be so kind to upload the firmware using this method
here
and
here
heinda said:
Hi,
I had the same problem in bulgaria with telenor.
Yesterday i got an update on my s7 edge to XXU1APCH and it seems to solve it.
This night it stayed connected. Normally i had the no service available in the morning.
Anybody else see the same?
Click to expand...
Click to collapse
Downloaded bulgarian firmware,, XXU1APC8 is the only one available. Tried to check for update, nothing yet to xxu1apch...
Update:
Emailed Indonesian Samsung Support, they came up with a temporary solution:
go to phone, dial *#9900#
select debug level disable/low
change to mid
wait for phone to reboot.
2 hours past no signal lost yet
update: 3rd hour signal gone again
hi,
has anyone found a solution for the problem above?
in my case I have really slow internet (mobile data) on 2,3 or 4G, it's like it freezes when I try to open a page
when I connect to 4G it maybe works for a second and then nothing else, it's like 2G, very slow (wifi works normal)
can it be hardware problem? I already cleared cache and reset the phone, but it's still the same..
At me the phone can not change back to 2G from LTE, if 3G network is unavailable.
If I use LTE/3G/2G option and somewhere is not 3G network I can't receive or make voice calls.
Phone only works with 3G/2G option in network mode.
But in this case I only can use edge if somewhere only 2G and 4G networks are available.
If I use LTE network, the phone doesn't receive incoming calls.
I bought my samsung s7 gold one month ago in Lebanon (Middle East). I faced exactly the same problem, I couldn't receive any phone calls. Went to the store and they told me to switch from LTE/4G to 3G. Now my phone is always on 3G and working ok so far. But I can't put it on 4G !!!
get new simcard will fixed problem
Hi, is there a solution to this?
got info that there is a patching from samsung for this issue but since i am using custom rom, i cannot confirm this.
anyone has any update?
Same problem! I'm from Mexico and i just bought my pink s7 Edge on sunday, i've been going everyday to the carrier store and yesterday they finally gave me another one but im having the same issue! I can't take it anymore i don't know what should I do Maybe all the pink ones have the same problem? They have already changed my SIM Card, i have tried with another one and it still happens
This sounds very similar to the LTE problem on the Nexus 6P I wonder if it is actually the same problem.
Dear experts.
i have finally decided to share my ''unlucky epxerience'' with you.
i have got a serious problem which i have been fighting with since the first day i purchased my phone.
i have a white nexus 5 32 Gb version,D821 model.
and i'm from morocco,which means 4G will work for me because my phone is the indian version not the american version that doesn't support 4G in the rest of the world.
so,my problem is like that: when i first bought this phone i got stuck in ''emergency calls only'' for one week like every nexus 5 users did due to this known problem about the phone.
and after many reboots,clearing cashe,and searching manually for network,i got the signal again.
i never tried to switch to LTE mode,becuz i thought it would charge me a lot of data.
but,after a while i decided on and switched to LTE and got stuck again in emergency calls only !!!
i tried many things like contacting my carrier,searching manually,inserting another Sim card,force switching to LTe by dialing *#*#4636#*#*
but to no avail.
i decided to go to the nearest 4G tower and make sure if the problem had to do with 4G coverage or my phone's antenna.
then,i finally saw the LTE logo with full bar.
to sum up,now,i can't use 4G unless i'm near a 4G tower.
moreover,sometimes my phone loses signal even when i'm using only 3G which leads me to switch to 2G to catch the signal or reboot my phone many times and manually search for network.
i don't know if the problem has to do with the antenna or the bands of my phone.
and since i know nothing about flashing drivers or enabling bands.
i don't wana risk and end up by disabling any obviously enabled band.
i never took my phone to repair,because Lg service isn't available in my erea,plus i don't wanna give my phone to a dumb that would make it worse,because i fix my phone all by myself.
please help me solve this problem.
if anyone has any clue like repairing my 4G with octobox or trying to fix the antenna please.
any kind if suggestion is accepted.
best regards
Zakaria.
Edit : yesterday,i removed the back cover of my nexus 5 and found out that it's actually a D820
that's weird because rebooting the phone to bootloader it says D821 (H)
and i was wondering what does that (H) revers to ?
but the thing that confuses me is if it's actually a D820 why does it catches LTE near a 4G tower?
does that mean the bands are already enabled ?
do i still need to enable any other band to make it work properly ?
thank you so much in advance and waiting to hearing from you soon.