[Q] HTC One M8 LTE Connectivity Issues - One (M8) Q&A, Help & Troubleshooting

[Q] HTC One M8 LTE Connectivity Issues - One (M8) Q&A, Help & Troubleshooting

Let me start off first by saying that I am S-Off through Sunshine.
I have an AT&T branded HTC One M8, which I recently converted the the Developer's Edition M8 by changing the CID and flashing the DE Recovery and Nandroid Backup.
I did this for two reasons: Tired of waiting on AT&T to release updates (Was still on 4.4.2 when I converted), and to get rid of bloatware while also having the ability to get OTAs.
Now my issue at the moment, which seemed to arise(although cant say for sure it was because of this) when I updated to DE 4.4.4. As far as I can tell right now, two apps - Snapchat, and Google Play, will not connect or send or receive data when LTE is active. Chrome, Instagram and a few other apps have no problem loading and sending and receiving data. If I go into Mobile Data settings, and switch from "GSM/WCDMA/LTE auto" to "GSM/WCMDA auto" everything will work fine. So the problem is solely with LTE. If any other information needs to be provided to troubleshoot feel free to ask.
Also, this happens with full bars, and with the LTE up and down arrows lighting up.

If you figure this out please let me know. I am experiencing the same issue. I called At&t and they were at a loss too. My browser works fine. My reddit app, my bank's app, and just about everything else doesn't work at all. And, the issue is only on LTE. So, we have the exact same problem. I really would appreciate help on this. I use my phone to find houses on emergency calls. If I don't have internet it makes it difficult.
The crazy part is the LTE works. I just doesn't work with apps.

Related

[Q] KVT49L LTE Network Weirdness

Three-purpose post: ask for help, see if others have same problem, and warn others of potential problem with KVT49L.
Unrooted Nexus 7 LTE (2013) model that had worked flawlessly for 6 months on Verizon LTE network by using the SIM card from my Verizon Galaxy Nexus with unlimited data. No activation was required, I just put the SIM card in and it worked great.
I accepted the KVT49L update when it came out about two weeks ago and ever since then I've had really weird problems with LTE, and I'm a bit stumped what to try to fix it, short of a factory reset.
Symptoms: Despite having full bars and the LTE indicator, while driving using Waze navigation app, I'll start getting "no network connectivity" complaints from Waze. To make sure it wasn't a Waze issue, I'd open Chrome and try searching for something, which resulted in no response, indicating the N7 wasn't getting any network connectivity.
Just to make sure, I opened apps like Amazon store app, and strangely, it works: searching for stuff I've never searched (to eliminate caching), I'd get results.
Cycle mobile data, it works again for a while, then same thing.
To see if it was just the N7 apps, or the network itself, I used FoxFi to tether my HTC One to the N7, then ran Waze and Chrome tests mentioned above, and sure enough, same problems.
EDIT: forgot to mention that my Verizon Droid Maxx, side-by-side with the N7 also running Waze/Chrome tests has zero issues with network connectivity. When the N7 acts up, the Maxx works perfectly, so it doesn't appear to be an issue with Verizon's towers in the areas this happens.
Reboots, cycling mobile data don't fix it for any length of time.
Anyone else have similar problems?
Does this sound like a software issue with the update?
Could the update have allowed Verizon to screw with me because it's a phone SIM? Why would they care?
Any suggestions for additional troubleshooting or things to try fixing. I suppose a factory reset is in order, but always hesitant to take that step.

[SOLVED] Can't receive calls.....but I can make them? (very detailed thread)

I'm having a VERY specific issue with my ATT M8 that I can't seem to figure out. First and foremost, I've tried wiping all partitions and starting over....with 3 different ROMS (Liquid, Candy5, Bliss Pop) and none of them allow me to RECEIVE calls. I've even done an RUU back COMPLETELY to stock everything using the ATT stock Lollipop RUU image. When I boot the stock RUU I can again receive calls. Below is the detailed info on the scenario....
Can't receive calls but I'm notified if someone leaves a voice mail.
Making calls from my phone works fine.
If I'm on the phone and someone calls me the phone notifies me like it normally would.
When someone tries to call me, they hear it ring the proper number of times and it does NOT go straight to voice mail.
That last bullet is VERY important. The fact the call doesn't go straight to voice mail is an indication the ATT network knows my phone is indeed powered on and available. Strangely though, it doesn't ring or do anything to otherwise show someone is trying to call.
At this point I'm really stumped. How on Earth is this even possible? Especially after doing the RUU and having the phone work as intended only to try and flash any other ROM later and have it not receive calls. I'm 100% stumped and really need y'alls help.!
**SOLUTION BELOW**
Apparently AT&T is rolling out HD Voice in many areas. It's basically voice over LTE and it's not compatible with many custom ROMS. This is why flashing the stock AT&T RUU made everything work just fine but when I tried ANY custom ROM it wouldn't work.
If this happens to you try the following....disable LTE by turning off mobile data or simply switching to 3G. Then try to call yourself or have someone call you. If the call comes through on your handset it's due to HD Voice having been activated on your account. I called AT&T and explained that I needed HD Voice turned off for my account. You'll likely have to talk to tech support. Ask them when it was activated on your account. Mine was activated last week which is the EXACT time I started having issues. The AT&T tech will ask that you power down the phone whilst they make the changes. Then turn your phone back on (with LTE active) and try a test call. It should work for you.
Big thanks to @redpoint73 for helping me figure this out!

I'm wondering if after doing the RUU my radio or something isn't at a proper level. Attached is a screenshot of my current bootloader. Anyone see something out of the ordinary that needs updating?

Yeah, I would go ahead and check with ATT if there are any bars on your account. Sounds like more of a network issue than a phone issue.

downbringer said:
Yeah, I would go ahead and check with ATT if there are any bars on your account. Sounds like more of a network issue than a phone issue.
Click to expand...
Click to collapse
Thanks for the reply! What would lead you to believe it's a network issue? I can make calls just fine and if I'm on the phone and someone calls me it works as if it normally would. Only issue is when someone calls me and I'm NOT on the phone.

Try turning off LTE, and see if you can get calls.
Some folks have been having issues with "international" based Sense ROMs not playing well with AT&T's LTE network upgrades (in preparation for Voice Over LTE). Not sure if this affects AOSP ROMs, but I have a feeling this is the problem.

redpoint73 said:
Try turning off LTE, and see if you can get calls.
Some folks have been having issues with "international" based Sense ROMs not playing well with AT&T's LTE network upgrades (in preparation for Voice Over LTE). Not sure if this affects AOSP ROMs, but I have a feeling this is the problem.
Click to expand...
Click to collapse
Wow......You, you're good you lol. @redpoint73
Sooooo yeah, changing my mobile data to 3G all of a sudden allows calls to come through. What exactly is at play here and how do I fix it?

italynstylion said:
What exactly is at play here and how do I fix it?
Click to expand...
Click to collapse
As I already described, AT&T is upgrading their LTE network for Voice Over LTE (they call it "HD Voice") and something in that upgrade doesn't seem to be playing well for some people on international based custom ROMs. In addition to voice call problems, you will probably also find SMS messages won't work on LTE.
Curiously, the problem seems to be very location specific. I've been running Skydragon Sense and LeeDroid for a few months, and on AT&T network. And everything has been working fine for me at my home location, as well as a few other locations around the country (I travel pretty occasionally for work). These are some of the ROM that others have had AT&T LTE issues with; and at one point even in the same city as another user that was suffering this issue (Chicago area). But for me, everything seemed to work fine.
The only real fix is to go back to stock AT&T based ROM. Folks have tried to flash various radios, and other things with no luck. Team Venom (Viper ROM) also said they would look into it a few months ago; but I don't think anything ever came of that.
An ingenious workaround posted by another user (if you want to stay on an international ROM): call AT&T and ask them to turn off HD Voice for your account. So you can still use LTE for data, but the call bug won't occur.
Of course, the downside for this is that you won't be able to utilize HD Voice. But that is probably the lesser of evils, if you want to stay on the current ROM.

redpoint73 said:
As I already described, AT&T is upgrading their LTE network for Voice Over LTE (they call it "HD Voice") and something in that upgrade doesn't seem to be playing well for some people on international based custom ROMs.
The only real fix is to go back to stock AT&T based ROM. Folks have tried to flash various radios, and other things with no luck.
An ingenious workaround posted by another user (if you want to stay on an international ROM): call AT&T and ask them to turn off HD Voice for your account. So you can still use LTE for data, but the call bug won't occur.
Of course, the downside for this is that you won't be able to utilize HD Voice. But that is probably the lesser of evils, if you want to stay on the current ROM.
Click to expand...
Click to collapse
This is brilliant. I'll give it a shot. Thanks for your help!

italynstylion said:
This is brilliant. I'll give it a shot. Thanks for your help!
Click to expand...
Click to collapse
I agree, its a good workaround. Especially since HD Voice requires users on both ends of the call to have a phone that supports the feature; and few phones for the time being have it. So having HD Voice turned off on your account (even if its deployed in your area) is probably mostly irrelevant.
You're quite welcome. And if you have a chance, please click the "Thanks" button for any posts you found helpful!

redpoint73 said:
I agree, its a good workaround. Especially since HD Voice requires users on both ends of the call to have a phone that supports the feature; and few phones for the time being have it. So having HD Voice turned off on your account (even if its deployed in your area) is probably mostly irrelevant.
You're quite welcome. And if you have a chance, please click the "Thanks" button for any posts you found helpful!
Click to expand...
Click to collapse
Just got off the phone with AT&T and everything is just peachy again. I updated the first post with the solution/fix. Thanks so much for your help!

italynstylion said:
Ask them when it was activated on your account. Mine was activated last week which is the EXACT time I started having issues.
Click to expand...
Click to collapse
Interesting. I wonder if HD Voice hasn't been activated on my account yet; and that is why I haven't had this issue while others have?

redpoint73 said:
Interesting. I wonder if HD Voice hasn't been activated on my account yet; and that is why I haven't had this issue while others have?
Click to expand...
Click to collapse
It's certainly possible. I live in Dallas which is a fairly large area. It wouldn't surprise me if we were one of the areas that got it first. Sucks being a guinea pig but I've left a trail of breadcrumbs for everyone else to follow.

italynstylion said:
It's certainly possible. I live in Dallas which is a fairly large area. It wouldn't surprise me if we were one of the areas that got it first. Sucks being a guinea pig but I've left a trail of breadcrumbs for everyone else to follow.
Click to expand...
Click to collapse
I'm in Boston area, and according to the AT&T maps, HD Voice is working here.
Although, I got the M8 long before it supported the feature (they added it with the 4.4.4 OTA). So I don't know how they decide when to activate it on your account; but if its device related, I can see how it might not be on mine yet.

italynstylion said:
I'm having a VERY specific issue with my ATT M8 that I can't seem to figure out. First and foremost, I've tried wiping all partitions and starting over....with 3 different ROMS (Liquid, Candy5, Bliss Pop) and none of them allow me to RECEIVE calls. I've even done an RUU back COMPLETELY to stock everything using the ATT stock Lollipop RUU image. When I boot the stock RUU I can again receive calls. Below is the detailed info on the scenario....
Can't receive calls but I'm notified if someone leaves a voice mail.
Making calls from my phone works fine.
If I'm on the phone and someone calls me the phone notifies me like it normally would.
When someone tries to call me, they hear it ring the proper number of times and it does NOT go straight to voice mail.
That last bullet is VERY important. The fact the call doesn't go straight to voice mail is an indication the ATT network knows my phone is indeed powered on and available. Strangely though, it doesn't ring or do anything to otherwise show someone is trying to call.
At this point I'm really stumped. How on Earth is this even possible? Especially after doing the RUU and having the phone work as intended only to try and flash any other ROM later and have it not receive calls. I'm 100% stumped and really need y'alls help.!
**SOLUTION BELOW**
Apparently AT&T is rolling out HD Voice in many areas. It's basically voice over LTE and it's not compatible with many custom ROMS. This is why flashing the stock AT&T RUU made everything work just fine but when I tried ANY custom ROM it wouldn't work.
If this happens to you try the following....disable LTE by turning off mobile data or simply switching to 3G. Then try to call yourself or have someone call you. If the call comes through on your handset it's due to HD Voice having been activated on your account. I called AT&T and explained that I needed HD Voice turned off for my account. You'll likely have to talk to tech support. Ask them when it was activated on your account. Mine was activated last week which is the EXACT time I started having issues. The AT&T tech will ask that you power down the phone whilst they make the changes. Then turn your phone back on (with LTE active) and try a test call. It should work for you.
Big thanks to @redpoint73 for helping me figure this out!
Click to expand...
Click to collapse
Thanks for the post this helped me with my issue!!!

Have any of you tried to disable enhanced 4G LTE Mode in network settings instead of slowing you down to 3g?
goo.gl/photos/BX9N2b37Z2Wb1UeQA
[/QUOTE]
italynstylion said:
I'm having a VERY specific issue with my ATT M8 that I can't seem to figure out. First and foremost, I've tried wiping all partitions and starting over....with 3 different ROMS (Liquid, Candy5, Bliss Pop) and none of them allow me to RECEIVE calls. I've even done an RUU back COMPLETELY to stock everything using the ATT stock Lollipop RUU image. When I boot the stock RUU I can again receive calls. Below is the detailed info on the scenario....
Can't receive calls but I'm notified if someone leaves a voice mail.
Making calls from my phone works fine.
If I'm on the phone and someone calls me the phone notifies me like it normally would.
When someone tries to call me, they hear it ring the proper number of times and it does NOT go straight to voice mail.
That last bullet is VERY important. The fact the call doesn't go straight to voice mail is an indication the ATT network knows my phone is indeed powered on and available. Strangely though, it doesn't ring or do anything to otherwise show someone is trying to call.
At this point I'm really stumped. How on Earth is this even possible? Especially after doing the RUU and having the phone work as intended only to try and flash any other ROM later and have it not receive calls. I'm 100% stumped and really need y'alls help.!
**SOLUTION BELOW**
Apparently AT&T is rolling out HD Voice in many areas. It's basically voice over LTE and it's not compatible with many custom ROMS. This is why flashing the stock AT&T RUU made everything work just fine but when I tried ANY custom ROM it wouldn't work.
If this happens to you try the following....disable LTE by turning off mobile data or simply switching to 3G. Then try to call yourself or have someone call you. If the call comes through on your handset it's due to HD Voice having been activated on your account. I called AT&T and explained that I needed HD Voice turned off for my account. You'll likely have to talk to tech support. Ask them when it was activated on your account. Mine was activated last week which is the EXACT time I started having issues. The AT&T tech will ask that you power down the phone whilst they make the changes. Then turn your phone back on (with LTE active) and try a test call. It should work for you.
Big thanks to @redpoint73 for helping me figure this out!
Click to expand...
Click to collapse

phgojiya said:
Have any of you tried to disable enhanced 4G LTE Mode in network settings instead of slowing you down to 3g?
goo.gl/photos/BX9N2b37Z2Wb1UeQA
Click to expand...
Click to collapse
[/QUOTE]
What ROM are you on? I dont have that option to turn off enhanced LTE on my network settings page

grafik2 said:
What ROM are you on? I dont have that option to turn off enhanced LTE on my network settings page
Click to expand...
Click to collapse
If you are on AT&T and suffering this problem, my advice would be to call AT&T and ask them to turn off HD Voice on your account. The enhanced LTE setting on the phone does nothing to help this problem.

redpoint73 said:
If you are on AT&T and suffering this problem, my advice would be to call AT&T and ask them to turn off HD Voice on your account. The enhanced LTE setting on the phone does nothing to help this problem.
Click to expand...
Click to collapse
Gotcha.
i had this happen to me once months ago maybe even a year ago and i called and they turned HD voice off and it worked. it started happening again last week I wonder if ATT reapplied the HD voice setting for some reason

Skydragon Marshmallow

I'm currently running "SkyDragon | Sense 7 MarshMallow | v1.6.5 | 6.12. 1540.4 1 2 3" on my T-mobile HTC One M8 and am having trouble with data locking up.
Anyone else experiencing this?
I'd post in the ROM thread, but I don't have enough posts.
Mobile data locks up under certain circumstances, mainly with a data type change (ex: going from LTE to 3G).
The data shows as existing, and all apps detect a connection, but everything fails to connect unless I get on WiFi or kill the mobile data and reinitialize it.
Not sure if it's the ROM or something Marshmallow related, but I didn't get any results with searching.
Tried a few wipes and reflashes, so it's not a dirty install.
Any ideas?
Used custom roms before with no issues on this device.

avg2424 said:
Used custom roms before with no issues on this device.
Click to expand...
Click to collapse
Those custom ROMs that you used before also Marshmallow ?
I can only guess your data problem is more on firmware matter but I may be wrong. Also it needs some files from T-MOB stock Marshmallow but AFAIK T-MOB does not have a Marshmallow release yet.
Some people mentioned to check and enter your T-MOB APN manually.

Other Roms were not Marshmallow, they were Lollipop. HTC does have an official Marshmallow release listed for use. Would it be a huge difference to use it versus an official Tmo release? I've used international Roms before.
It would sound like a firmware issue possibly, the only issue is it only does it occasionally, not often enough to be reproducible. I also have to add I notice it only when running Waze and Pandora. Could be related, but driving around is the only time it happens and thats what I have running when driving (had no issues on Lollipop).
I am going to test it because I have found a driving route that it locks up on. IF it works fine without Waze and Pandora running, I'll toss the blame on one of those apps (or a streaming connection plus tower handovers?), killing them, however, does not solve the lockup, only toggling the mobile data or airplane mode or switching to a wifi connection (same as killing mobile data)
APN is fine, uneditable, but settings look normal for Tmo
Just curious if anyone else using this rom or any marshmallow tmo rom have this issue
I can and probably will try a different marshmallow rom also to see if the issue persists. Just hate having to wipe and set everything up...
To me, it sounds like something is latching up data. Is there an app that will allow me to see all open connections on marshmallow and allow me to kill specific ones?

So much for that idea. Downloaded an app to view connections and while sitting at a place where my connection goes from LTE to HSPA, the lockup occured. No Waze and no Pandora running, no latched on network connections either.
Time to test a different Rom...

Solution
Finding the issue by way of search wasn't easy, but I found it and a fix.
Apparently it's an issue with HTC and radio options.
The fix can be found here.
http://forum.xda-developers.com/verizon-htc-one-m8/general/verizon-4g-handoff-fix-t2868778
For those with a GSM rom, you will need to use the tool and not the dialer code.

Mobile signal problem

Hello guys, my phone fails to connect to the Internet under a specific circumstance even though it receives 5-bar HSPA signal. This problem is a bit tricky to reproduce. First, I'd like to say that it's a 4G plan and my phone IS ABLE to receive 4G signal and has connection to the Internet wheb no problem occurs. When I go to some places that my phone receives 2-bar signal only (e.g. in Elevator, tunnel, etc.), it'll drop to HSPA with 2 or 3-bar signal. It seems normal, right? But then I go to somewhere that's supposed to have 5-bar signal or even has a clear blue sky above, my phone receives 5-bar HSPA signal with NO connection at all! Here I say No connection instead of no Internet connection is that it can't even receive or make any call when the problem occurs. The phone will obtain 4G signal again only after turning off and on mobile network or Airplane mode. Otherwise, it just sticks to this status forever. Or if I wait for an enough time, which varies from a few minutes to half an hour, it'll eventually have an X on the signal bar and reset the connection to work again. This problem's already driven me crazy! May someone help me please:crying:
I have an S-off unlocked HTC_622 HK version device (was changed to superCID recently). It went through every version of firmware from 1.80.708.X to 2.28.401.9 and both HK stock ROM and LeeDroid ROM.
Edit: It also happens sometimes when it connects to 4G.

I have used an unlocked HTC 10 with T-Mobile service and haven't had this issue, but I had similar issue when on WiFi.

Carrier & country ??
Sent from quite brutal hTc 10 ..

jauhien said:
Carrier & country ??
Sent from quite brutal hTc 10 ..
Click to expand...
Click to collapse
Carrier: SmarTone HK
Country: Hong Kong
I also noticed there is no Internet connection when it's on LTE band 8

Did you drop it ..?
Sent from quite brutal hTc 10 ..

jauhien said:
Did you drop it ..?
Sent from quite brutal hTc 10 ..
Click to expand...
Click to collapse
No, never dropped it. It's been like this for a long time. I thought that was because of faulty SIM card at first, but it turns out the SIM card has nothing to do with the problem.

Send it to service then. It may could be a hardware issue

if you reset everything back to original does it still have the same issues? If so then probably a rma request is needed

Prinz069 said:
Send it to service then. It may could be a hardware issue
Click to expand...
Click to collapse
I consider doing it all the time since it's happened. Last time I called for a RMA because of touchscreen unresponsiveness along with signal issue. They just replaced the screen and did nothing with this issue. What concerns me most is the phone looks and behaves like 120% "normal" as long as it doesn't undergo the "specific circumstance" I mentioned. Looks like I need to state very very clearly about the problem this time.
Wonders_Never_Cease said:
if you reset everything back to original does it still have the same issues? If so then probably a rma request is needed
Click to expand...
Click to collapse
At some point, I'd been using stock HK ROM and kernel for a week or two with root only. It still had the same issue.

Hi
I have quite the same issue as you with my phone except it is with 4G. I explain, some time I can have a full 4G strengh (4 bar signal) and still cannot access internet, or send SMS. It seems that my phone can send data but not receive because I'm able to make a call, but not receive one. Also people receive several time my SMS : they still appears as sending in my app and I believe their are sent but my phone seems it doesn't receive any confirmation, so it still try to send it.
If I go back to 2G/3G mode in network, everything works fine. This would be easy if 4G never works, but sometime it does so this looks like a random behavior.
I think this is a 4G band issue. I found an app called LTE Discovery that display information about your network. My phone works correctly when I'm connected to band 3 and 20 (can see the exact frequency in the app). My carrier (SFR, in France) uses also band 7 and 28, but I still need to confirm those bands work or not (seems band 7 works but not sure, this might be specific frequencies of this band that fail).
And when my phone does not work, the app fail to display the exact frequency I'm using.
I have an unlocked boot loader, Venom rom 4.2 (Android 7) and an old firmware (1.80.xxx). Issue started to shwo when I was using Marshmallow, and a full wipe and rom reinstallation didn't fix it.
Does it looks like your issue?

Kwiskas said:
Hi
I have quite the same issue as you with my phone except it is with 4G. I explain, some time I can have a full 4G strengh (4 bar signal) and still cannot access internet, or send SMS. It seems that my phone can send data but not receive because I'm able to make a call, but not receive one. Also people receive several time my SMS : they still appears as sending in my app and I believe their are sent but my phone seems it doesn't receive any confirmation, so it still try to send it.
If I go back to 2G/3G mode in network, everything works fine. This would be easy if 4G never works, but sometime it does so this looks like a random behavior.
I think this is a 4G band issue. I found an app called LTE Discovery that display information about your network. My phone works correctly when I'm connected to band 3 and 20 (can see the exact frequency in the app). My carrier (SFR, in France) uses also band 7 and 28, but I still need to confirm those bands work or not (seems band 7 works but not sure, this might be specific frequencies of this band that fail).
And when my phone does not work, the app fail to display the exact frequency I'm using.
I have an unlocked boot loader, Venom rom 4.2 (Android 7) and an old firmware (1.80.xxx). Issue started to shwo when I was using Marshmallow, and a full wipe and rom reinstallation didn't fix it.
Does it looks like your issue?
Click to expand...
Click to collapse
It really looks like for the part of 4G connection. AFAIK LTE doesn't handle phone call and SMS? Have you tried to test with other SIM cards and phones?
I also use LTE Discovery to test my phone. My carrier uses LTE band 3, 7, 8. My phone does receive signal of all these bands and works fine with band 3, 7 even with 1-bar signal. But for band 8, nothing about Internet works normally except for phone calling.
Seems my last resort will be switching my phone with my friend's (also HTC 10) to test with this problem.

Hi,
It seems I managed to solve my issue. For the moment I have working LTE at home, will try at works tommorow.
I simply update my firmware to 1.95.401 (was on 1.80.xxx) and it seems to works so far.
Maybe reflashing your firmware (if it is possible) could correct the issue?

Kwiskas said:
Hi
I have quite the same issue as you with my phone except it is with 4G. I explain, some time I can have a full 4G strengh (4 bar signal) and still cannot access internet, or send SMS. It seems that my phone can send data but not receive because I'm able to make a call, but not receive one. Also people receive several time my SMS : they still appears as sending in my app and I believe their are sent but my phone seems it doesn't receive any confirmation, so it still try to send it.
If I go back to 2G/3G mode in network, everything works fine. This would be easy if 4G never works, but sometime it does so this looks like a random behavior.
I think this is a 4G band issue. I found an app called LTE Discovery that display information about your network. My phone works correctly when I'm connected to band 3 and 20 (can see the exact frequency in the app). My carrier (SFR, in France) uses also band 7 and 28, but I still need to confirm those bands work or not (seems band 7 works but not sure, this might be specific frequencies of this band that fail).
And when my phone does not work, the app fail to display the exact frequency I'm using.
I have an unlocked boot loader, Venom rom 4.2 (Android 7) and an old firmware (1.80.xxx). Issue started to shwo when I was using Marshmallow, and a full wipe and rom reinstallation didn't fix it.
Does it looks like your issue?
Click to expand...
Click to collapse
I think you'll be "pleased" to know you're not alone:
I have the exact same issue, SFR , HTC 10, Venon rom 4.2.
I had a couple of exchanges with carrier support, always the same answer: our antenna is under repair...
The only way out on my side is to stay in 3G most of the time and then I can receive SMS, otherwise, no 4g in specific places, and very late SMS reception (I can receive SMS from 2 days prior... This happen when on 4g).
By the way, SFR made me get a 10€ discount every month when I told them I would leave, you can ask for it too.
---------- Post added at 02:31 PM ---------- Previous post was at 02:17 PM ----------
Kwiskas said:
Hi,
It seems I managed to solve my issue. For the moment I have working LTE at home, will try at works tommorow.
I simply update my firmware to 1.95.401 (was on 1.80.xxx) and it seems to works so far.
Maybe reflashing your firmware (if it is possible) could correct the issue?
Click to expand...
Click to collapse
I've been on 2.28.401.xxx since a couple of weeks, I've got the issue, so maybe it's more related to a clean install?
I'll switch to 2.38.617.xxx and see where it goes

Does it appears your phone have a good connectivity when you are in 4G? I mean, my phone used to display all network bar and LTE logo but nothing seems to works.
Also, you can keep in mind that is the 4G only fail in some area, this is probably a software issue, not hardware. I also saw there was antenna repair in my area, but I was the only one to get issue. Can you compare with your mates if they also have network issue (same carrier, try to switch SIM) ?
What is your CID? Mine is HTC_034 and I couldn't install 2.xx firmware.
For me, the issue just happened, with no explaination. I didn't update firmware or install any new ROM. So yes install the new one might correct the issue for you too, if the symptoms are the same.

Kwiskas said:
Does it appears your phone have a good connectivity when you are in 4G? I mean, my phone used to display all network bar and LTE logo but nothing seems to works.
.
Click to expand...
Click to collapse
COnnectivity was at the max, and no traffic at all, no up or download, and no ping. That's what puzzled me.
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Also, you can keep in mind that is the 4G only fail in some area, this is probably a software issue, not hardware. I also saw there was antenna repair in my area, but I was the only one to get issue. Can you compare with your mates if they also have network issue (same carrier, try to switch SIM) ?.
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That's something I've planned to do. A bit complicated thought, I listen to music when I commute and these loss of 4g connectivity happens in places I would not stop normally...
That's one of the places I've identified, maybe you'd know this place (I doubt but how knows...)
https://www.google.fr/maps/place/48...!4m5!3m4!1s0x0:0x0!8m2!3d48.817837!4d2.249069
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What is your CID? Mine is HTC_034 and I couldn't install 2.xx firmware.
For me, the issue just happened, with no explaination. I didn't update firmware or install any new ROM. So yes install the new one might correct the issue for you too, if the symptoms are the same.
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.[/QUOTE]
My CID is HTC__001 wwe, I didn't buy it from SFR, I don't remember if I tricked the CID or not. (well think so)
I have the exact same symptoms as you

COnnectivity was at the max, and no traffic at all, no up or download, and no ping. That's what puzzled me.
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Click to collapse
Not sure of this, I checked using the network monitor in the notification bar. Up arrow were appearing but not down arrow so I assume my phone could upload but not download.
Didn't check out you place specifically, but this 2 ones for sure did not works :
https://goo.gl/maps/HHqaM8bnbR22
https://goo.gl/maps/tewhj1kw6gs
My CID is HTC__001 wwe, I didn't buy it from SFR, I don't remember if I tricked the CID or not. (well think so)
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Didn't buy it from SFR either, but changing CID require to be S-OFF so I assume you have the orginal one. Don't understand why there is several CID with different firmware update, for WW/US version I can but for 2 phone both buy in France, not from the carrier...
Anyway, I thought this could be linked to a specific CID and matching firmware but it doesn't obviously.

I'll try the Brancion spot later today.
Something else I was thinking about, I wonder if baseband got updated , by now I have [email protected]_41.13_F.
Something I always asked myself in fact, does Radio gets updates in Viper or any other Rom do, and if no, how to.
I guess via RUU, but for now, I can't make it to work, I have to sort out how I did before

If I'm correct radio is contained in the firmware image, and will be updated with it.
You also can flash radio if you are S-OFF.
ROM won't update neither firmware or radio.
FYI I have [email protected]_59.06_F, which seems to be more recent than yours, this may be the source of the issue (no idea what version I had previously).
I used this tools to update firmware, as I am S-ON :
https://forum.xda-developers.com/htc-10/how-to/tool-firmware-updater-t3441029

Kwiskas said:
If I'm correct radio is contained in the firmware image, and will be updated with it.
You also can flash radio if you are S-OFF.
ROM won't update neither firmware or radio.
FYI I have [email protected]_59.06_F, which seems to be more recent than yours, this may be the source of the issue (no idea what version I had previously).
I used this tools to update firmware, as I am S-ON :
https://forum.xda-developers.com/htc-10/how-to/tool-firmware-updater-t3441029
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Click to collapse
Thanks for the link, really cool tool!
I now have the radio latest version, I'll do the "Brancion" test tonight and report.

Kwiskas said:
If I'm correct radio is contained in the firmware image, and will be updated with it.
You also can flash radio if you are S-OFF.
ROM won't update neither firmware or radio.
FYI I have [email protected]_59.06_F, which seems to be more recent than yours, this may be the source of the issue (no idea what version I had previously).
I used this tools to update firmware, as I am S-ON :
https://forum.xda-developers.com/htc-10/how-to/tool-firmware-updater-t3441029
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Click to collapse
I've did the tests with the new radio, the phone now switches to HSDPA or 3g depending on network condition, so it sort of fixed the issue of being stuck in 4g without actual data transfert ability

Rarely connects to 4G/LTE even though signal is good.

I'm in UK with a unlocked HTC10 from carphone warehouse, on the ThreeUK network.
Recently I've noticed that I no longer connect to 4g other than a few very rare occasions.
The only changes,
1. full update to the latest OS
2. I removed the sim card and put it into an old phone, when I re-inserted it into the HTC I got "network updates" which I accepted.
Things I have done after verifying mobile network/data is set to AUTO
1. delete all APN
2. reset APN to details available on my carrier website
3. Settings >backup+reset>network settings reset.
The odd thing is very occasionally it does decide it likes LTE and it works fine.. but its rare.. even if I do a reboot or toggle airplane mode.... the second I remove the sim card and put it into my old phone I have LTE, so it really isn't a signal issue.
My network have suggested a factory reset, but I am not rooted and have game data among other things that are impossible to backup. so at this stage I would rather not .
totally flummoxed by this one!!! any help or suggestions appreciated...

stupink said:
I'm in UK with a unlocked HTC10 from carphone warehouse, on the ThreeUK network.
Recently I've noticed that I no longer connect to 4g other than a few very rare occasions.
The only changes,
1. full update to the latest OS
2. I removed the sim card and put it into an old phone, when I re-inserted it into the HTC I got "network updates" which I accepted.
Things I have done after verifying mobile network/data is set to AUTO
1. delete all APN
2. reset APN to details available on my carrier website
3. Settings >backup+reset>network settings reset.
The odd thing is very occasionally it does decide it likes LTE and it works fine.. but its rare.. even if I do a reboot or toggle airplane mode.... the second I remove the sim card and put it into my old phone I have LTE, so it really isn't a signal issue.
My network have suggested a factory reset, but I am not rooted and have game data among other things that are impossible to backup. so at this stage I would rather not .
totally flummoxed by this one!!! any help or suggestions appreciated...
Click to expand...
Click to collapse
possible solutions:
- get new sim card
- hard reset done inside stock recovery
Sent from my hTc 10

Thanks.
I got a bit of time today, so did a factory reset.. same error still.. and again I put the sim in my old phone and bang 4g straight away..
in the HTC if I leave it in a strong signal position for several minutes I can see 4g occasionally pop up, but if I walk away from the window it goes again, even though I get 4g through the whole house on my old phone, and did on the htc when I first got it.
Actually thinking theres a hardware fault now.. bit of a strange one.. but looks like i'll have to return the phone tomorrow. we can try a different sim first in the shop

Just an update.
I spoke several times to HTC, one ran through basic resets with me no change (hardly surprising as I've already done a hard reset). this agent "sent through" details for return item for fix.. but these took days to arrive so in the meanwhile thinking they were lost I phoned again.
This agent was going to send me a email with lots of settings changes to try... this email never arrived....
Now since then I've done a lot of research online, and found that there are quite a few sites saying the htc10 on the new software has LTE issues, poor signal dropping signal etc.. IE it is my error, so why did htc support not know this? I wonder if its generic media articles or actually a "known" fault... its so hard to search here as both 4G and LTE are too short search terms..
Now Do I bother to send it back to them and be without my phone for a couple weeks?? if its software then surely they cannot do anything... I wonder how long until the next OTA update that may fix this if I just wait it out??
Really don't know what to do, I rely on my phone a lot, 4G isn't really "needed", but I do find the 3g signal is quite poor around a lot of areas I used to get good 4G.

stupink said:
Just an update.
I spoke several times to HTC, one ran through basic resets with me no change (hardly surprising as I've already done a hard reset). this agent "sent through" details for return item for fix.. but these took days to arrive so in the meanwhile thinking they were lost I phoned again.
This agent was going to send me a email with lots of settings changes to try... this email never arrived....
Now since then I've done a lot of research online, and found that there are quite a few sites saying the htc10 on the new software has LTE issues, poor signal dropping signal etc.. IE it is my error, so why did htc support not know this? I wonder if its generic media articles or actually a "known" fault... its so hard to search here as both 4G and LTE are too short search terms..
Now Do I bother to send it back to them and be without my phone for a couple weeks?? if its software then surely they cannot do anything... I wonder how long until the next OTA update that may fix this if I just wait it out??
Really don't know what to do, I rely on my phone a lot, 4G isn't really "needed", but I do find the 3g signal is quite poor around a lot of areas I used to get good 4G.
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Bro im on 3uk but im on us unlocked firmware with working 4g lte and volte and wifi calling...
On stock 3 firmware i had appalling 4g connectivity but 4g has been crap on 3 for years. Try s off and update firmware to .617 and use a custom rom like viper

MrH871 said:
Bro im on 3uk but im on us unlocked firmware with working 4g lte and volte and wifi calling...
On stock 3 firmware i had appalling 4g connectivity but 4g has been crap on 3 for years. Try s off and update firmware to .617 and use a custom rom like viper
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Thanks, I'm currently on 2.41.401.3
I have good 4g on my old phone (now sold), and this htc10 was better when I first got it, now its aweful,
Can you link me the exact software youre using? I'm very new to the HTC, I assumed the europ unlocked software would be the same as USA? but I don't get Volte or Wifi calling on 3uk..
I use mirrorlink quite a lot, and like the HTC software, so i'm keen to keep on a stock rom so I can use android pay as well etc.. or is your rom custom/rooted etc? Sorry to pester, you're the first threeuk customer on this phone I've come across. any extra details/information would be awesome thanks.

stupink said:
Thanks, I'm currently on 2.41.401.3
I have good 4g on my old phone (now sold), and this htc10 was better when I first got it, now its aweful,
Can you link me the exact software youre using? I'm very new to the HTC, I assumed the europ unlocked software would be the same as USA? but I don't get Volte or Wifi calling on 3uk..
I use mirrorlink quite a lot, and like the HTC software, so i'm keen to keep on a stock rom so I can use android pay as well etc.. or is your rom custom/rooted etc? Sorry to pester, you're the first threeuk customer on this phone I've come across. any extra details/information would be awesome thanks.
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Search for SneakyGhost firmware htc 10 xda, exactly like that in google i am not sure if im allowed to send links on here that's why and you will find the firmware in their, its 2.xx.617.x
My phone is rooted, head over to the viper 10 page on here its a custom rom... If you get an RUU exe file you can install
617 firmware and stock rom and will have working volte, inside my home i have 4g lte connection so its about 60mb download speed, no joke on 3!!!! Lol with an RUU you will lose ALL data so back up on pc and move back over afterwards, any more questions or if i was clear PM me

So a bit of an update.. I chickened out of a software change... So got the sim changed, no difference, gotthe phone sent for repair, they updated to 401.4 but no change.. rang again, and we tried setting to 4G only using the service menu, and bop 4G signal just fine.. so it genuinely is a software bug in 7.0, the stupid thing is I had one bar at 3G, I swapped to 4g only and had 5bars!!!!! so it wasn't even like it was favouring the strongest signal.. just a shame I cannot receive phonecalls on 4g, so I need to leave it set to auto and just accept until they sort it that I rarely get 4g.. but at least I now know if I need 4g at any point I can go to the service menu and swap to 4g temporarily. he sounded like there have now been like a few reports of this, so hopefully HTC take it on board and push a software update promptly. he suggested 3-4weeks as a potential timescale, I suspect he meant months.. but fingers crossed

stupink said:
So a bit of an update.. I chickened out of a software change... So got the sim changed, no difference, gotthe phone sent for repair, they updated to 401.4 but no change.. rang again, and we tried setting to 4G only using the service menu, and bop 4G signal just fine.. so it genuinely is a software bug in 7.0, the stupid thing is I had one bar at 3G, I swapped to 4g only and had 5bars!!!!! so it wasn't even like it was favouring the strongest signal.. just a shame I cannot receive phonecalls on 4g, so I need to leave it set to auto and just accept until they sort it that I rarely get 4g.. but at least I now know if I need 4g at any point I can go to the service menu and swap to 4g temporarily. he sounded like there have now been like a few reports of this, so hopefully HTC take it on board and push a software update promptly. he suggested 3-4weeks as a potential timescale, I suspect he meant months.. but fingers crossed
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When you were having this problem was Chrome allowing you to access some sites, but on others saying that the DNS server could not be reached? If its same problem that you are having I can't use your work around as it's difficult to get a 4G signal where I live.

matt07930 said:
When you were having this problem was Chrome allowing you to access some sites, but on others saying that the DNS server could not be reached? If its same problem that you are having I can't use your work around as it's difficult to get a 4G signal where I live.
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Sounds like you're having a different issue, assuming you have a data connection, and each website has no server issues, or the ISP isn't blocking the site(usually they'd say not a DNS error) then one site should load as easy as another, I have these exact same issues when I have ad-blockers enabled on certain sites (some you'd expect to work).. do you run a blocker of any form? try disabling it and trying again on that website..

stupink said:
Sounds like you're having a different issue, assuming you have a data connection, and each website has no server issues, or the ISP isn't blocking the site(usually they'd say not a DNS error) then one site should load as easy as another, I have these exact same issues when I have ad-blockers enabled on certain sites (some you'd expect to work).. do you run a blocker of any form? try disabling it and trying again on that website..
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No ad blocker.
I tried a variation of your solution and made the phone only connect to 3G or lower which seems to have solved the issue even when I switch back to 4G, hopefully it's not just a coincidence. Thanks for your advice.

Three UK user here, just tried the service menu 4G force and that seems to work for me, I shall see how it goes. Good for dead spot testing
So a few days later: Leaving it on means 4G pretty much everywhere I go but the obvious downside is no calls even through the ThreeInTouch app. Bit of a downer so back to watching it sit on 4G until I want to actually use it then it goes 'Hey let me check jump back to regular H for you'

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