Develop Bugs

[Q] LG8 Connectivity Issues?

Some basic info: Sprint SGS3; rooted, manually updated to LG8. Otherwise, stock.
Since then, I've noticed that my phone doesn't "hold on" to 4G as well as it did pre root and update. For example, the 4G icon will be next to the signal strength in my status bar then it will disappear, there will just be signal strength with no connection indicator then either 3G or 4G will appear. I don't ever remember this happening before root/update. I haven't flashed anything else on the phone, and the main reason I rooted in the first place was so I could easily tether.
Has anyone else had this same issue?

Its funny that the LG8 update was supposed to help users that were having LTE connectivity issues... this happens to me on occasion too. i would venture to say that a combination of LTE still being in early development and coverage being spotty at times even in areas where u may have gotten full coverage at one point plus the "Connection Optimizer" that often jacks with ur data connection switching between wifi, 3g and 4g(LTE)... try doing a ##72786# to reactivate ur phone on the network... this will automatically re-associate ur data profile with the network and update prl info as well...

+1 I have the same issue
Sent from my SPH-L710 using xda premium

I am envious that you have a LTE signal to lose, I've not tasted any LTE yet 3 weeks after go live of LTE in the Atlanta area

Visionikz03 said:
Its funny that the LG8 update was supposed to help users that were having LTE connectivity issues... this happens to me on occasion too. i would venture to say that a combination of LTE still being in early development and coverage being spotty at times even in areas where u may have gotten full coverage at one point plus the "Connection Optimizer" that often jacks with ur data connection switching between wifi, 3g and 4g(LTE)... try doing a ##72786# to reactivate ur phone on the network... this will automatically re-associate ur data profile with the network and update prl info as well...
Click to expand...
Click to collapse
Thanks for the reply. I'll try the ##72786# and report back with results.
You make a fair point about LTE still getting off the ground, but I will say that pre-root/update, my phone held 4G consistently. Whatever the issue is, hopefully it will sort itself out soon, or enough people will have the same issue that it spurs some action on Sprint's side.
I'm in Houston, FWIW.
Edit/Update: ##72786# seemed to do the trick. HOWEVER, about 15 minutes ago, I attempted to turn on WiFi Tether. My laptop connected with no issues, but about 5 minutes into it, neither the 4G nor the 3G icons appeared next to the signal strength meter. ##72786#'d again, just to see if it made a difference, updated PRL and Profile. Things are holding steady so far, but we'll see how long this lasts.
I'll try to update later in the day.

kindalikemike said:
Thanks for the reply. I'll try the ##72786# and report back with results.
You make a fair point about LTE still getting off the ground, but I will say that pre-root/update, my phone held 4G consistently. Whatever the issue is, hopefully it will sort itself out soon, or enough people will have the same issue that it spurs some action on Sprint's side.
I'm in Houston, FWIW.
Edit/Update: ##72786# seemed to do the trick. HOWEVER, about 15 minutes ago, I attempted to turn on WiFi Tether. My laptop connected with no issues, but about 5 minutes into it, neither the 4G nor the 3G icons appeared next to the signal strength meter. ##72786#'d again, just to see if it made a difference, updated PRL and Profile. Things are holding steady so far, but we'll see how long this lasts.
I'll try to update later in the day.
Click to expand...
Click to collapse
Glad to see it worked. This is by no means a permanent fix. As u flash different roms thru out ur phones life span its a good idea to run this code every so often as flashing can overtime degrade baseband performance as those files dont get replaced with a rom but different roms interact with those files depending on the tweaks made at software level...
Sent from my SPH-L710 using xda premium

jdelano said:
I am envious that you have a LTE signal to lose, I've not tasted any LTE yet 3 weeks after go live of LTE in the Atlanta area
Click to expand...
Click to collapse
I can't wait either. For those that have 4G i'm curious as to what the battery life is like and how much faster the network is on the SG3.

Visionikz03 said:
Glad to see it worked. This is by no means a permanent fix. As u flash different roms thru out ur phones life span its a good idea to run this code every so often as flashing can overtime degrade baseband performance as those files dont get replaced with a rom but different roms interact with those files depending on the tweaks made at software level...
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
The issues cropped up again throughout the day, though not as frequently. I made a post in a reddit subforum and someone there suggested I flash new radios. Any idea on whether that would work, and if so, where/how/what?

kindalikemike said:
The issues cropped up again throughout the day, though not as frequently. I made a post in a reddit subforum and someone there suggested I flash new radios. Any idea on whether that would work, and if so, where/how/what?
Click to expand...
Click to collapse
I tried to flash the LG2 radio and it made no difference at all.

mrg02d said:
I tried to flash the LG2 radio and it made no difference at all.
Click to expand...
Click to collapse
It won't, till Sprint gets their network done. I've been back and forth on all radios, no difference IMO.
this message brought to you by my GalaxyS3 running Phantom's Blazer v1.6

Try this... http://forum.xda-developers.com/showthread.php?t=1816530
Sent from my SPH-L710 using xda premium

That is dissapointing
jdelano said:
I am envious that you have a LTE signal to lose, I've not tasted any LTE yet 3 weeks after go live of LTE in the Atlanta area
Click to expand...
Click to collapse
I am up here in Sugar Hill. Sprint Map shows you deep in LTEville. I worked in Tucker last year when a co-worker got a Verizon Tunderbolt. His 4G was screaming. He was getting 40+ down!
But the map also shows Cumming in LTE land so I drove over there just to see what LTE looked like and I saw the icon flicker on for about 30 sec. but it never really was there.

Naddict said:
Try this... http://forum.xda-developers.com/showthread.php?t=1816530
Sent from my SPH-L710 using xda premium
Click to expand...
Click to collapse
Just flashed back to LG2, so I'll update later and see how things are going.

Hspa+ speeds slow

Hey all. Im not sure what it is but I have called att and they clame it is my phone and not something on their side.
Anyway ive been traveling from PA to NJ and VA all getting hspa+ connecfion but my download speeds are 50kb/s and not much better upload. The exception is connecting to lte but everywhere else is utter crap. Im sure I was getting better speeds when I got the phone so im not sure what I did.
I tried to flash another rom. Flash the stock modem again.
Does anyone have any ideas of what could be causing this?
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

Well their is two versions of hspa+ you have hspa+ & hspa+ combined with enhanced backhaul. According to the documentation that came with the phone hspa+ combined with enhanced backhaul is the one capable of 4G speeds, but this is only available in limited areas and your phone can't distinguish which hspa+ network it's connected too. So you may be connected to just hspa+ which may not be much faster than 3g depending on the quality of your connection.

Well I just placed my sim into my GS2 (had to line it up) and I was getting 2.5 MB/s down with that phone and only 300kb/s down on the Note 2. So something is up with my phone. I have reset it back to factory and used triangle away in hopes of returning it to get a replacement.
Does anyone have any ideas of what I can try? Im willing to try anything

I managed to fix it!!! I went into the service mode **#197328640#) and changed some values. I set the cdma to be automatic and reset two other values and BOOM! Reset the phone and now am getting 6MB/s down and 2MB/s up. Glad that I don't have to send the phone back!

What other values? I live in that area. At my house I get about 6 down but everywhere else is been .5 and 2 mb/s.... And I have Wifi at home so the house speed is irrelevant.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

brianmay27 said:
I managed to fix it!!! I went into the service mode **#197328640#) and changed some values. I set the cdma to be automatic and reset two other values and BOOM! Reset the phone and now am getting 6MB/s down and 2MB/s up. Glad that I don't have to send the phone back!
Click to expand...
Click to collapse
Could you share what values were changed? Thanks in advance!

Aranen_Zen said:
What other values? I live in that area. At my house I get about 6 down but everywhere else is been .5 and 2 mb/s.... And I have Wifi at home so the house speed is irrelevant.
Sent from my SAMSUNG-SGH-I317 using xda app-developers app
Click to expand...
Click to collapse
Sorry, been away studying. Ill try to remember.
Mind you I have little knowledge of what these values do so I take no responsibility. Maybe someone who knows something about them can post what they do..
First off get into service mode with the dialer code mentioned above. Than:
CDMA>Common>REBUILD
" > " > PREF Mode Set > CDMA_HDR_LTE_ONLY
" >Control>CDMA_band_select>Automatic
After that I did a reboot and it was working again. Let me say this will only apply if your speeds are in the ****ters everywhere. I was only getting a max of 500kb/s download everywhere I went (I traveled a few states recently and it was all bad except for LTE areas).
If you think its your device check another device before. I put my micro sim back into my Galaxy s2 (had to fidget to get the sim to line up) and ran a test and it was 3mb/s vs the 450kb/s on the note.
If this helps anyone Ill be interested to hear, I'm pretty sure I screwed it up in the first place but maybe ATT just sent out some bad devices and I did not notice till I tried.

brianmay27 said:
Sorry, been away studying. Ill try to remember.
Mind you I have little knowledge of what these values do so I take no responsibility. Maybe someone who knows something about them can post what they do..
First off get into service mode with the dialer code mentioned above. Than:
CDMA>Common>REBUILD
" > " > PREF Mode Set > CDMA_HDR_LTE_ONLY
" >Control>CDMA_band_select>Automatic
After that I did a reboot and it was working again. Let me say this will only apply if your speeds are in the ****ters everywhere. I was only getting a max of 500kb/s download everywhere I went (I traveled a few states recently and it was all bad except for LTE areas).
If you think its your device check another device before. I put my micro sim back into my Galaxy s2 (had to fidget to get the sim to line up) and ran a test and it was 3mb/s vs the 450kb/s on the note.
If this helps anyone Ill be interested to hear, I'm pretty sure I screwed it up in the first place but maybe ATT just sent out some bad devices and I did not notice till I tried.
Click to expand...
Click to collapse
you saved my life!!!
i rooted my phone using the galaxy note 2 toolkit and have been suffering from constant loss of reception, whereever i'm at. in fact, it seemed worse downtown than in the suburbs. sitting in my office downtown i couldn't even send text messages or make phone calls, i would constantly be losing network connection.
i went back to stock EVERYTHING and i still had the same problem. it was so frusturating. thanks for the help!
all i did was rebuild CDMA and that fixed it! didn't try the other things you did.

Werid 4g speeds, need help ruling out phone or network

I bought a Tmobile Galaxy S3 on new years from staples, and since ive got the phone ive been experiencing strange 4g speeds. While im in my house, I always have full signal strength, and it always says 4G. I live in the Bronx in New York City, and when the 4g is working properly, I get upwards of 20 megabits down, and 1-2 up. Now I could literally be sitting in the exact same spot, and later ill test the phone and it says 0.2 - 0.3 megabits, and like over 1000 ping and the up is so slow it doesnt even measure it. It usually comes back after waiting, turning airplane mode off and on multiple times or doing a battery pull. I find it strange that I can get either 21 mbps or 0.3 in the same house, while always having full bars. In the phone status sometimes it would say UTMS or HSPA, so it does switch from 3g to 4g sometimes. The thing is my previous phone was Nexus S with 3g and im pretty sure I never had a problem loading a simple image in my house because the internet was so slow. I consistently pulled 3-6 mbps on that phone. I tried calling t-mobile 3 times and they give me the same basic crap, like clear your cache, make sure airplane mode is off (really?) make sure youre network mode is on auto (i tried auto and wcdma only and it still gets slow) and all that other stuff. Is there anything else I could try to see if its a network or phone issue?

It sounds like it might be something with your local tower. I would call Tmobile and put in a repair ticket.
Sent from my SGH-T999 using Tapatalk 2

Thanks, I just did that. Called t-mobile and just directly asked them to check for tower issues, and they filed a complaint. They said to check back in 3 days, hopefully this gets fixed, or else it might be the phone. Do you think flashing different modems would change anything?

tigim101 said:
Thanks, I just did that. Called t-mobile and just directly asked them to check for tower issues, and they filed a complaint. They said to check back in 3 days, hopefully this gets fixed, or else it might be the phone. Do you think flashing different modems would change anything?
Click to expand...
Click to collapse
It wouldn't hurt to try. What are you currently running? (rom/kernel/modem)
Sent from my SGH-T999 using Tapatalk 2

Completely stock 4.1.1, with UVDLJA modem, which is the latest I believe. The phone is relatively new so I wanted to try touchwiz before I rooted. Does installing something like cm10 change the modem? Or is it independent of rom/kernel. I saw an application for tmo that can change between multiple modems pretty quickly, I might give it a try.
Sent from my SGH-T999 using xda app-developers app

My opinion
tigim101 said:
Thanks, I just did that. Called t-mobile and just directly asked them to check for tower issues, and they filed a complaint. They said to check back in 3 days, hopefully this gets fixed, or else it might be the phone. Do you think flashing different modems would change anything?
Click to expand...
Click to collapse
I work for T-Mo,
If I may lend my opinion,
To me, it definitely sounds like the tower. If you go from 20Mbit down to 0.2, and with 1000ms latency, it's super obvious there is something
wrong with the tower, or there is significant demand on the tower from other users, hey its NYC population density is insane.
Something to note as well, New York City is "in progress" for "network modernization" where they are switching to 1900Mhz.
This is why some people who have iPhones are now getting 3G in certain areas, unlocked devices, as well as AT&T phones can have 3G down there.
Due to this, since there is quite a lot of switching around going on down there, that's probably what's going on.
Example:
http://www.tmonews.com/2013/01/t-mobiles-network-modernization-what-is-it-where-can-i-get-coverage/
Hope it helps.

I see, well that makes sense. I dont really mind if its a tower issue because thatll be fixed eventually, I just would of hated if I had to replace the phone, it would of been such a hassle because I didnt buy it direct from t-mo. Thanks to both of you!
Also, since t-mobile seems to be using multiple bands for 4g, I guess it would be better to leave it on auto in network settings?
Sent from my SGH-T999 using xda app-developers app

tigim101 said:
I see, well that makes sense. I dont really mind if its a tower issue because thatll be fixed eventually, I just would of hated if I had to replace the phone, it would of been such a hassle because I didnt buy it direct from t-mo. Thanks to both of you!
Also, since t-mobile seems to be using multiple bands for 4g, I guess it would be better to leave it on auto in network settings?
Sent from my SGH-T999 using xda app-developers app
Click to expand...
Click to collapse
If it helps you at all to see if you are on a different band than 1700/2100mhz
You can go into the dialer and do:
*#0011#
Up top mine says band 4
Which is for 1700mhz AWS
BAND 2
which is for 1900mhz PCS.
You might be on band 4 or 2 on a tower by tower basis, or if they are making adjustments
You might be switched but that is above my pay grade lol

Anyone notice their service getting worse?

At first I thought it might have been my rom, but it seems it's happening with my GF's note 2 also.
Coverage we used to receive in some areas is almost completely gone. It will show signal and the 4g symbol but basically have NO internet service whatsoever.
On a better note, we've been receiving coverage in some areas we don't usually have it.
I'm hoping this is just a temporary thing due to the attempts to upgrade towers for LTE.
I don't know if it's because of the UVBMB4 update, but t-mobile service has been pretty crappy lately. Period.
We're in the San Gabriel Valley area.
Link for older UVALL4 modem below, people seem to experience better service
http://forum.xda-developers.com/show...php?p=36786363

I believe my service has suffered as well. Before the last update that enabled our Lte radios, I had great speeds, now it's slowed Way down. I'm in San Diego CA. Hope that it's just as the Op said, LTE towers being updated and what not.
Sent from my SGH-T889 using xda premium

Definitely have noticed a deterioration of service over the past month here in NYC.

Its because for some reason that new LTE APN is slow on HSPA+.. unless you have LTE in your area switch to the EPC APN. You can find the settings online. Its litter ally consistently a difference of 6+ mbps I have extensively speed tested lol..... click thanks if this helped
Sent from my SGH-T889 using xda premium

I also had problems even with old apn.
Flashed previous radio and service is top notch again.
Sent from my SGH-T889 using xda premium

Same here, I thought it was rom related.

YES! My service has sucked royally for the past month or so. Data latency/hangups/slowness, and the signal will just completely go away sometimes. I noticed that it started as soon as I flashed the most recent radio too, I'm about to go back to the old one.

Count me in, even my regular phone reception went from 4 bars no 1 or 0!

Can anyone point to towards old radio to flash? I go from no signal downstairs to full bars upstairs...theres an obv issue with new radio.

Yup I've noticed this beginning this week I've made zero changes to the phone. I used to get full bars at work and this week it bounces between full and 1 bar regularly. Theure messing with towers for sure
North Carolina by the way. Charlotte. Big City of 1 million people.
Sent from my SGH-T889 using Tapatalk 2

nxneko said:
Can anyone point to towards old radio to flash? I go from no signal downstairs to full bars upstairs...theres an obv issue with new radio.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=36786363

nxneko said:
Can anyone point to towards old radio to flash? I go from no signal downstairs to full bars upstairs...theres an obv issue with new radio.
Click to expand...
Click to collapse
I'm also experiencing significant decrease on data speed. Has your data speed improve after flashing with older radio and APN setting?
Sent from my SGH-T889 using Tapatalk 2

zen0s said:
I'm also experiencing significant decrease on data speed. Has your data speed improve after flashing with older radio and APN setting?
Sent from my SGH-T889 using Tapatalk 2
Click to expand...
Click to collapse
I was getting about 9/0.6 and with flashing back Im getting... 14/2 Though Ive been on HSDPA 15 & 21. Though Im not getting 4G as much, but it was sporadic anyways and I lost signal...and now I am not. So, Im happy now even though I am on 3G. However... in my corner big red has same problems as they wanted to not have tons of towers in this corner and theres only a ATT Tower....for a decent distance. basically reception fringe. though I am a new subscriber so i haven't experienced normal TMO, I literally got my device yesterday around 6pmish but it def wasn't normal and flashing previous radio did fix it like it solved everyone elses issue

janjannsen99 said:
Yup I've noticed this beginning this week I've made zero changes to the phone. I used to get full bars at work and this week it bounces between full and 1 bar regularly. Theure messing with towers for sure
North Carolina by the way. Charlotte. Big City of 1 million people.
Sent from my SGH-T889 using Tapatalk 2
Click to expand...
Click to collapse
my problems started last friday. i have limited to no service at all; no data, no voice, even no signal at times (circle with line through it, not just no bars). when i do get a signal, the phone refuses to register on the network. when im at home, i have intermittent service. i miss calls, texts wont send, if i do get a working call, it drops after a bit. there are times when it works fine, even on LTE but it never last long. went to the tmo store last night and they gave me a new sim which didnt do squat. already done the factory reset option (twice). phone has never been rooted, all stock. im in the KC metro so not like in the middle of nowhere. they said my next step is a warranty replacement phone if the sim didnt help. not sure if my problem is at all related to everyone elses in this thread, but yeah, service has sucked.

One of the issues, especially if you switch from 4g to edge to gprs a lot, is a setting in the new modem.
It's something called acquisition order. It has 3 settings:automatic, gsm_umts, umts_gsm. In short it tells the phone what kind of network to prefer. It will search for and use that type of network first.
Prior to the latest update it was set to auto. Now it is set to prefer umts. For some reason this has caused an issue I've come to call phantom 4g. Where it'll say 4g with no bars and no data service.
That is my guess. I'll look into it further.
Sent from my SGH-T889

Thanks guys for the heads up on switching to an older radio, I dont have LTE in Miami yet and was having slow internet for the last 3 weeks, I just switched and wow! What a difference. I'm also using the Epic APN.

I also noticed that speeds were degraded after the update. However, there is a simply fix to make your web a tad bit faster....
Go into your network settings, and switch your mobile network from LTE/4g/3g/2g to just 4G/3g/2g
your device will stop looking for an LTE connection and will just utilize HSPA+
Made a world of a difference on my own device. Connecting to the play store, opening web pages, everything was right back to where it was before the update.
Obviously if you live in an LTE area, there is no need to do this...

newageoutlaw said:
I believe my service has suffered as well. Before the last update that enabled our Lte radios, I had great speeds, now it's slowed Way down. I'm in San Diego CA. Hope that it's just as the Op said, LTE towers being updated and what not.
Sent from my SGH-T889 using xda premium
Click to expand...
Click to collapse
I dont know about you but I live in san diego too my data speed stay above 10meg and max is 15meg.
Sent from my SGH-T889 using xda app-developers app

So I'm gonna be a noob here for a sec. When people say they are flashing the previous radio (I'm referencing the link that was posted) are people just flashing the modem from the section under the most recent? (the one with the January date on it). Just thought I would ask. Better safe than sorry. Thanks!
Sent from my SGH-T889 using xda app-developers app

superkamiguru31 said:
So I'm gonna be a noob here for a sec. When people say they are flashing the previous radio (I'm referencing the link that was posted) are people just flashing the modem from the section under the most recent? (the one with the January date on it). Just thought I would ask. Better safe than sorry. Thanks!
Sent from my SGH-T889 using xda app-developers app
Click to expand...
Click to collapse
Yup, radio is synonymous with modem in this case. UVALL4 is the previous version.
Hastily spouted for your befuddlement

[Q] Data service iffy on LTE - phone or Straight Talk issue

Hi,
I've been having data issues with my HTC ONE M8 on Straight Talk for the past couple of weeks. the data service for some reasons got really iffy. before everything was absolutely fine. now sometimes I cannot access data at all, sometimes something is working and something doesn't.
when the data doesn't work:
- most of websites are not reachable
- google.com seems to work normally
- google maps might work; sometimes very slow, sometimes not working at all
- ookla speedtest won't start, but if I set a fixed server it might work
- facebook.com might work in the browser but the app doesn't work
- refreshing the page seems to help
on WI-FI I have absolutely no problem. everything works fine.
phone and txt messages work without problems.
on 3G (HSDPA) everything seems to work fine. I see problems when on LTE.
anybody has the similar issues?? any suggestions?
many thank!!

I am having the exact same issue! So frustrating, I don't want to use 3g if we should be on "Full speed 4G LTE for up to 3GB"!
tried so many different APN's, no luck can't get over 2.5mbps with any of them

I would be happy with anything that works right now. the service is just NOT WORKING. I am paying for a service that doesn't work and that's not acceptable.
I opened a case with the help desk; useless. I was talking to people who don't understand the basic concepts of networking. made me add a proxy to the APN; no difference at all.
then I put a complain on Twitter and got some other people "helping" via email. at least they asked for the address of where I am always having problems; hopefully, they check out the service at the antenna. I think it's not a BTS (antenna) issue but something related to their proxy, firewall or network gateway since google.com works without problems!
I talked to a friend of mine who has StraightTalk as well and he said that he had the same issue last year!

I had the exact same issue with Net10 it is so annoying and unacceptable =(

Have you tried calling straight talk a call

U can try this from what I know ur phone gets chooses the strongest signal tower example u are around 3G tower it has a 9/10 signal and the 4g tower is a 6/10 strength it goes with the 3g hope this helps in ur dial pad dial *#*#4636#*#* then Phone Information....Scroll down a little bit to Set preferred network type. I was able to lock in LTE only doing this and gave me the fastest signal on my device hope with works for u. If u can post ur original settings before u change to lte option only on this post so u can always revert to ur original setting good luck.

SOEBOMB said:
U can try this from what I know ur phone gets chooses the strongest signal tower example u are around 3G tower it has a 9/10 signal and the 4g tower is a 6/10 strength it goes with the 3g hope this helps in ur dial pad dial *#*#4636#*#* then Phone Information....Scroll down a little bit to Set preferred network type. I was able to lock in LTE only doing this and gave me the fastest signal on my device hope with works for u. If u can post ur original settings before u change to lte option only on this post so u can always revert to ur original setting good luck.
Click to expand...
Click to collapse
if I lock it to 3G it actually works well. I will try your suggested settings.
on another note I wonder if it's an issue with the phone radio implementation. my Nokia/Windows phone sees LTE very very slow but it doesn't stop working completely.

xmkgenzo said:
if I lock it to 3G it actually works well. I will try your suggested settings.
on another note I wonder if it's an issue with the phone radio implementation. my Nokia/Windows phone sees LTE very very slow but it doesn't stop working completely.
Click to expand...
Click to collapse
Hmmm Idk but anything's worth a try what settings do u have it on already?

if I put it on GSM/WCDMA (so no LTE) data works fine in 3G.
and if I do a speed test in 3G it gets about 5Mbps in download vs 1, 2 or 3 Mbps when LTE works (ZERO otherwise)

The exact same thing started happening to me two or three weeks ago. More often than not, the LTE connection simply doesn't work, and when it does, it's excruciatingly slow (anywhere from 0.01 to 2.50 mpbs, and usually less than 1.00). Do you guys have AT&T or T-Mo sims? I'm starting to wonder if going to Cricket would solve the problem, but since I'm running an AT&T sim, I'm not sure if anything would change since it's on the same network.
Straight Talk support is worthless... they think a factory data reset will fix it, when it's clearly a network issue. I just told them to stop right there and started troubleshooting myself. That's a good tip about dialing *#*#4636#*#* and turning off LTE that way. It seems like that is where the issue lies - I'm having good luck with HSPA; it's slower than LTE should be, but at least it works. It'll do as a stopgap through the end of my billing cycle, at which point I can decide whether to go somewhere else or get by on HSPA until they fix whatever the problem is.

SOEBOMB said:
U can try this from what I know ur phone gets chooses the strongest signal tower example u are around 3G tower it has a 9/10 signal and the 4g tower is a 6/10 strength it goes with the 3g hope this helps in ur dial pad dial *#*#4636#*#* then Phone Information....Scroll down a little bit to Set preferred network type. I was able to lock in LTE only doing this and gave me the fastest signal on my device hope with works for u. If u can post ur original settings before u change to lte option only on this post so u can always revert to ur original setting good luck.
Click to expand...
Click to collapse
spinninbsod said:
Have you tried calling straight talk a call
Click to expand...
Click to collapse
tried and on pure LTE it simply doesn't work. the only way is to set GSM/WCDMA and it goes at 3G speeds but at least it works.
the funny part is that Google.com always works, whatsapp works, googleplay works. so it seems a problem with throttling or filtering to me.

spinninbsod said:
Have you tried calling straight talk a call
Click to expand...
Click to collapse
yes. completely incompetent. asked for a supervisor; no way to speak to one.
I posted on Twitter and ST got back to me asking to send them an email. I did. 10 different people sending me emails with conflicting actions.
insanely frustrating.

spinninbsod said:
Have you tried calling straight talk a call
Click to expand...
Click to collapse
bushpilotwannabe said:
The exact same thing started happening to me two or three weeks ago. More often than not, the LTE connection simply doesn't work, and when it does, it's excruciatingly slow (anywhere from 0.01 to 2.50 mpbs, and usually less than 1.00). Do you guys have AT&T or T-Mo sims? I'm starting to wonder if going to Cricket would solve the problem, but since I'm running an AT&T sim, I'm not sure if anything would change since it's on the same network.
Straight Talk support is worthless... they think a factory data reset will fix it, when it's clearly a network issue. I just told them to stop right there and started troubleshooting myself. That's a good tip about dialing *#*#4636#*#* and turning off LTE that way. It seems like that is where the issue lies - I'm having good luck with HSPA; it's slower than LTE should be, but at least it works. It'll do as a stopgap through the end of my billing cycle, at which point I can decide whether to go somewhere else or get by on HSPA until they fix whatever the problem is.
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I have ST on AT&T.
a friend of mine with iPhone 6 down in Newport has no problems. he sent me screenshots of speed test at 15Mbps.
I really wonder if it's some radio firmware issue...

Ironically, I ran into something very like this too recently....I was on an at&t straighttalk sim...lte had been OK prior to me updating to 4.4.4. It was never spectacular, but it was, at least, lte speeds. After the update I noticed it had become really sketchy...just as described, pretty much; even when mine worked it was trash. 3g was much better and totally stable. I thought it might be the update, but long story short, it wasn't. I inserted a friend's sim from tmobile and got full lte with no issues.
Now, in my case, I had been using a shaved down microsim rather than a nano sim, so I thought, maybe that's the issue. I noticed when ordering the new one, the tmobile one actually said htc m8 compatible on the page(plus my friend's legit tmobile sim got good signal and lte so I thought that's a good basis for comparison). Got the new one, put my number on it, and voila! I'm getting on average 20mbps lte. And it's very consistent too. So now I'm on the tmobile straighttalk sim and everything is fine.
Anyways, it's only $7 with free overnight shipping, so that's something easy to try. This wouldn't be the first time a new sim fixed all sorts of weird data problems with straighttalk either. I've been on with them for several years now and this is probably my 4-5th sim I've had to get for various reasons.
So, anyways, your mileage may vary but that fixed it for me. Hope it helps.

gokun said:
Now, in my case, I had been using a shaved down microsim rather than a nano sim, so I thought, maybe that's the issue. I noticed when ordering the new one, the tmobile one actually said htc m8 compatible on the page(plus my friend's legit tmobile sim got good signal and lte so I thought that's a good basis for comparison). Got the new one, put my number on it, and voila! I'm getting on average 20mbps lte. And it's very consistent too. So now I'm on the tmobile straighttalk sim and everything is fine.
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it seems ST on T-mobile is not having the same issues as ST on AT&T. the problem is that T-mobile coverage is not so good in my area.
I tried my phone in a different location (400 miles away) and had the same issues.

I've done some more testing.
it is really weird that Google.com works flawless while any other site seems not to work.
activating "save data usage" in Chrome seems to help. however it doesn't solve the problem. sometimes pages needs to be reloaded a few times.
even when LTE works, the OOKLA speed test gives me 2Mbps in dowload and 5-6Mbps in upload. so no matter what, I am better off with 3G.

I found an interesting thread here on XDA. I am not rooted at the moment and can't try.
<<
If you are rooted there is simple FIX, simple disable FD8 (Fast dormacy 8)
ro.ril.enable.r8fd=1
ro.ril.enable.pre_r8fd=1
Change both to =0 and issue will be fixed.
If your not rooted only fix is to keep HotSpot enabled than data connection wont break.
>>
I tried the hotspot trick but it doesn't work for me

Sorry to bump an old thread, but I just wanted to give a brief update. My LTE issues with Straight Talk went unresolved for about 6 weeks despite multiple conversations with customer service. I experienced this in Raleigh, NC, Greensboro, NC, and Virginia Beach, VA. Then for Thanksgiving, I went to New York City and New Jersey (the part just outside of Philly), where all data connections were unreliable. Yes, that means 2G, 3G, HSPA, and LTE were all spotty at best the entire time.
I ran out of patience after that, and since my billing cycle was ending on 12/4, I switched to Cricket when I got home. As soon as I popped in the Cricket sim card, everything started working flawlessly again. Cricket does limit you to 8 mbps down, but that's good enough for my purposes. The issue, if it's still going on, is with Straight Talk and not the phone.

Lollipop Fixed the Issue on my HTC M8
Hey all,
I've been following this thread as I too had issues with LTE on my HTC M8 using StraightTalk. When I first got my phone, it worked perfectly with LTE on ST. Then I ran the OS update that was released sometime near November. That's when I noticed the problems. I could run a search on Google but any webpage I would try to connect to would not load. The phone would hang and eventually time out. Your instructions to turn off LTE was great help. Pages load perfectly provided LTE is not used. I was getting really frustrated and you kept me from throwing my phone at a wall. Thanks for that.
So that brings me to this post. I updated my phone to Lollipop this morning. Thought I'd give turning LTE back on and bam.... works perfectly. I've been testing it all morning and so far, all pages load really fast. I will keep an eye on it for a while and post any updates but thought I pay it back a bit with the good news since you guys helped me.
Thanks again.
AC

thank you for sharing!!
trying to upgrade to Lollipop. unfortunately I am having an issue with the recovery (flashed from TWRP to a stock that doesn't work with the OTA and can't flash any other recovery -not sure what's wrong).
when I solve this issue and able to upgrade to Lollipop I will share my LTE test results