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Intermittent Data/Cell -Exclamation Mark in Signal Indicator

This happens on every Lollipop ROM I have flashed, no problems on 4.4 ROMS. I do clean installs, do not restore anything from Tibackup. So basically what happens is I will randomly but very frequently lose all data and cell service. Like once every three minutes frequently. It only lasts about 5 seconds at a time. The signal bar triangle will have an exclamation mark in it (see attached example). I delete and re-enter my APN, turn off wifi AND the Scanning Always Available option. I have read some threads about this exact same thing happening on Nexus 5 after Lollipop update but they are old and it seems to have been fixed with an update. Does anyone have any ideas about what is going on? I'm on TMO in the US and like I said, it ONLY happens on Lollipop ROMs it does not happen of Kitkat.
I read this as sort of an explanation as to why but nothing as to how to fix it. It is driving me insane.

I'm in the same boat, I cant make calls with hangouts or with Dialer or it will disconnect. I haven't seen a solution yet. I've tried every ROM I can, but it keeps crashing. drives me up a wall. I want to logcat it, but having issues while at work.

budm said:
I'm in the same boat, I cant make calls with hangouts or with Dialer or it will disconnect. I haven't seen a solution yet. I've tried every ROM I can, but it keeps crashing. drives me up a wall. I want to logcat it, but having issues while at work.
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Only discussion about this I have seen is in the Nexus 5 forums, nothing in OPO

Any insight to this would be greatly appreciated.

Come on guys, am I really the only one with this issue?

TigerDNA said:
Come on guys, am I really the only one with this issue?
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You're not alone, I have this as well but I don't get the exclamation mark but instead the triangle appears completely empty, as if I have no signal at all.

anyone know a way to fix this awell? i flashed the new lolipop alpha modem and still same thing if not worse

The only time this has happened to me is when I toggle Wi-Fi. It for this every time, but have no data issues otherwise. Seems to be when switching between ip addresses. Are you possibly between towers or roaming on another network? May be the issue, but I can't say for sure. Running the lollipop rom exodus, no issues at all.
EDIT: also what baseband are you guys on? I thought I saw something similar and someone flashed a test baseband and it fixed whatever issue they were having. Link coming shortly.
EDIT 2: just now noticed the list above mine about the alpha modem and it not working for them. If anyone else needs to try however, link is http://forum.xda-developers.com/sho... work for some and not others.
from the one+

Does anyone know if we can flash the CM11S modem on CM12?

Go to Settings -> More - > Mobile Networks. Make sure all the items are set correctly.

alleykat2561 said:
Go to Settings -> More - > Mobile Networks. Make sure all the items are set correctly.
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In OP "I delete and re-enter my APN, turn off wifi AND the Scanning Always Available option."

Same issue here. Running SlimSaber using alpha radio.

Same problem on two OPOs here, both running Temasek CM12

Anyone found a solution yet?
I have the same issue on CM12, BlissPop and Validus ROMS.
Strangely I do NOT have the issue on Euphoria.
Think it happened after I flashed the Alpha L modem.
Tried flashing an older CM11S modem, but no luck...

Hi,
Sorry for the noob answer but anybody tried settings>mobile networks>preferred network type and set it to 3G? I flashed a new rom from stock CM and noticed that I was experiencing signal trouble, I checked my status and the signal detected is LTE so I changed my network to 3G and network signal improved. Downside is that you cant use LTE (but thats ok for me since here in our country, LTE signal is still kind of limited)

Zino same for me. Ever find a fix or a rom that doesn't do this?

OP here, it's strange that all of us have this issue, the same issue that came up on the Nexus 5 thread when L was first released but know one else seems to have any knowledge of it. I am almost certain it doesn't have to do with our carriers but rather something software related.

I'm also suffering from this issue, until now the only way I knew how to fix it was to wipe the cache in recovery which takes ages!

got the same problem :<

I have a similar issue. I use t mobile in the USA and LTE works, H+ works, but 3g shows signal and won't load anything. No idea how to fix it.

[Q] Locks on Nexus 5 with CM12.1 CAF

Hi!
Since I updated my phone to CM12.1, it locks randomly. I thought that's the issue patern is the switch between WIFI and 3G but I discarded that idea.
I think that the problem is caused by Bluetooth because since I disable it the system is stable.
I can't attach files and links. How can I send you the logcat of the error and phone info?
Thanks in advance.

gordocabron76 said:
Hi!
Since I updated my phone to CM12.1, it locks randomly. I thought that's the issue patern is the switch between WIFI and 3G but I discarded that idea.
I think that the problem is caused by Bluetooth because since I disable it the system is stable.
I can't attach files and links. How can I send you the logcat of the error and phone info?
Thanks in advance.
Click to expand...
Click to collapse
I haven't had any problems with mine locking up, but my Bluetooth crashes when my car tries to read my SMS messages. Settings --> Apps --> All --> clear cache on Bluetooth Share

FIX: CM12 no calls, sms, mms on Deep Sleep and Bluetooth connectivity issue.

I rarely post here anymore but if this helps anyone that was dealing with the same frustration I was then great! As in all things technology related YMMV.
Many of us have experienced issues with the lack of incoming data on deep sleep as well as the inability to pair or switch to a bluetooth device while both on or off a call. In my case, I couldn't even connect my bluetooth devices to my cars even once paired.
This has solved the issue on both my OPO running Exodus and my wife's OPO running stock, rooted, unlocked, CM12S 17L. By the way... her Ok OnePlus trained on the first time.
The solution that worked for me was;
SKIP TO #2 if already running your desired ROM
1. Flash any CM12 based ROM you choose following the instructions of the OP
2. Flash the CM11 Modem Package
3. Flash the Proximity sensor package
4. Wipe Dalvik/Cache (i do this between every package flash but probably not needed)
5. Reboot system and set up.
6. Clear Bluetooth Share Cache and Clear Data (Settings - Apps - All - Bluetooth Share)
Profit.
Here is a updated link to the modem - http://wikisend.com/download/143816/CM11s_XNPH05Q_modem.zip

Quick question. Does this also include the old touchscreen driver? Might be a good way to also fix the so called ghost touches that I started having after flashing newest modem

t0ny0 said:
Quick question. Does this also include the old touchscreen driver? Might be a good way to also fix the so called ghost touches that I started having after flashing newest modem
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Not that I'm aware of.
Sent from my A0001 using XDA Free mobile app

ATT Intruder said:
I rarely post here anymore but if this helps anyone that was dealing with the same frustration I was then great! As in all things technology related YMMV.
Many of us have experienced issues with the lack of incoming data on deep sleep as well as the inability to pair or switch to a bluetooth device while both on or off a call. In my case, I couldn't even connect my bluetooth devices to my cars even once paired.
This has solved the issue on both my OPO running Exodus and my wife's OPO running stock, rooted, unlocked, CM12S 17L. By the way... her Ok OnePlus trained on the first time.
The solution that worked for me was;
SKIP TO #2 if already running your desired ROM
1. Flash any CM12 based ROM you choose following the instructions of the OP
2. Flash the CM11 Modem Package
3. Flash the Proximity sensor package
4. Wipe Dalvik/Cache (i do this between every package flash but probably not needed)
5. Reboot system and set up.
6. Clear Bluetooth Share Cache and Clear Data (Settings - Apps - All - Bluetooth Share)
Profit.
Here is a updated link to the modem - http://wikisend.com/download/143816/CM11s_XNPH05Q_modem.zip
Click to expand...
Click to collapse
Some clarifications needed:
When flashing a cm12 rom we must be already in a cm12 firmware so if we flash cm11 modem on that won't it cause any compatibility issues ?
I haven't observed issues with proximity sensor , can you explain what is the proximity fix for ?
Thanks in advance

jayOOMjay said:
Some clarifications needed:
When flashing a cm12 rom we must be already in a cm12 firmware so if we flash cm11 modem on that won't it cause any compatibility issues ?
I haven't observed issues with proximity sensor , can you explain what is the proximity fix for ?
Thanks in advance
Click to expand...
Click to collapse
The modem will not cause any compatibility issues and the proximity sensor will help with any issues you might have with gestures not functioning like circle for camera or prevent unlock. Give it a shot, you won't be disappointed.
Sent from my A0001 using XDA Free mobile app

ATT Intruder said:
The modem will not cause any compatibility issues and the proximity sensor will help with any issues you might have with gestures not functioning like circle for camera or prevent unlock. Give it a shot, you won't be disappointed.
Sent from my A0001 using XDA Free mobile app
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Hey man , bit late with my feedback. what you said was correct, cm11s modem fixes the issue :good:
I have tried it that week itself since you said i wouldnt be disappointed.
before seeing your post i have done much testing on many roms , kernels , gapps etc.and finally settled with exodus 5.0.2 with its default kernel which was running fine.. but i couldnt use 5.1.1 roms coz of the delay. The probable reason is the too long heartbeat interval Push notifications delayed, Hearbeat Interval not reliable
it is the combination of new source and kernels effect when working with lollipop modem.
I was also not impressed by the lollipop modems (coz of its reception was not that great for me )
so im happy with the cm11s modem and btw new ak kernel is available which fixes the touch issues without battery drain :good:
Thanks once again

Glad it helped.
Sent from my A0001 using XDA Free mobile app

oh i was hoping that this modem fixes my mms issue on cm12 and cm12.1... but no. thanks for the tip anyway !

Valaran said:
oh i was hoping that this modem fixes my mms issue on cm12 and cm12.1... but no. thanks for the tip anyway !
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What's your MMS issue?

no sending/receiving without an active wifi connection... Was working fine on 4.X but issue is persitent on 5.X (cms12s, cm12, cm12.1). I don't understand why... mms are sent through mobile data in france (instead of the issues with at&t i can find everywhere on internet).
no solution so far.

Valaran said:
no sending/receiving without an active wifi connection... Was working fine on 4.X but issue is persitent on 5.X (cms12s, cm12, cm12.1). I don't understand why... mms are sent through mobile data in france (instead of the issues with at&t i can find everywhere on internet).
no solution so far.
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Click to collapse
MMS is also sent through mobile data here as well on ATT. Can you provide more info to your issue as I was having mms issues on 5.1.1 as well but found a solution.

What do you need ?
I've tried many SMS apps. I've verified My apn many times. Tried many cm builds and cm12s. Worked fine on cm11s.
When i'm about to receive a MMS i got a notification (i currently use textra) saying that it canot download. After many tries it eventualy works. Configuring apn directly in SMS app don't fix. It works almost all time when wifi is enabled and connected. Same issue when i want to send.
Apps tested: hangouts , aosp, Google messenger, go SMS, smitten and textra.

Valaran said:
What do you need ?
I've tried many SMS apps. I've verified My apn many times. Tried many cm builds and cm12s. Worked fine on cm11s.
When i'm about to receive a MMS i got a notification (i currently use textra) saying that it canot download. After many tries it eventualy works. Configuring apn directly in SMS app don't fix. It works almost all time when wifi is enabled and connected. Same issue when i want to send.
Apps tested: hangouts , aosp, Google messenger, go SMS, smitten and textra.
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Click to collapse
Have you checked the size limits for mms? I was having the same issue until recent build. One mms would prevent anything from sending.
Sent from my A0001 using XDA Free mobile app

Hi !
Yes ! Textra can limit the MMS size (300ko). Have also enabled "auto activate data" un default SMS app
Problem is send and receive so not a file size issue i think.

Valaran said:
Hi !
Yes ! Textra can limit the MMS size (300ko). Have also enabled "auto activate data" un default SMS app
Problem is send and receive so not a file size issue i think.
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Click to collapse
Valaran,
Sorry for the delay in responding. Have you found a fix for your mms issue? Your's seems to be the opposite of mine in that if I have an active WiFi connection and my phone is in deep sleep I get no messages. Recently I've used profiles to set my connection on 2G/3G whenever connected to WiFi to ensure I get messages and phone calls when the phone sleeps.
Have you done the basics like checking apn and ensuring your imei is registered with your carrier?

Yes ! My MMS were sending fine on cm11s. I switch My operator tomorrow i'll see if it dix this issue.

Anyone that is still experiencing the issue please follow this link and vote this subject up.
https://jira.cyanogenmod.org/browse/BACON-3371
This is the bug log for Cyanogen and they just escalated the issue to critical.

Regards.
I'm with the rom Calkulin's OnePlus One v3.2.
Everything is going well but I have the problem that the option did not work PREVENT ACCIDENTAL STARTING.
What I have enabled but still awake double tap the screen and the power button, even completely covering the sensor.
Could you help me with this?

Modem link broken?

silentcovenant said:
Modem link broken?
Click to expand...
Click to collapse
check this out
http://boeffla.df-kunde.de/bacon/modems/
hope it helps

WiFi keeps on dropping on update from CM12

Hi
Was running on the CM 12.1 and no issues with wifi. Then I decided to update and went with the RR per below
http://forum.xda-developers.com/oneplus-one/development/rom-ressurrection-remix-m-t3270147
Did a clean install and loaded gapps and everything seemed ok but then had issues with Wifi dropping constantly. I tried google and changed channel on router to channel one and also tried app called Wifi Analyser but still the same issue.
Saw a fix for cm 12 in the below
http://forum.xda-developers.com/oneplus-one/general/fix-wifi-connectivity-issues-drops-t3070045
Not sure if same fix applies to 13 as it seems to be an issue with the CM 13 and not the ROM itself..??
Had to go back to CM12.1 and no wifi issues pity as was happy enough but no wifi is a showstopper. Posted in the RR thread but maybe this might be a CM13 issue so wondering if anyone knows any fixes for it as I may try again
Thanks

I have the same issue, need to turn off bluetooth, try it it may work for you also

WiFi and Network disconnects and the phone locks itself

Hey!
I've been using HavocOS 2.7 for a while and I didn't have the bug(used 9.8 Indian firmware) and after I upgraded to HavocOS 2.9 with the latest firmware, the phone locks itself and the wifi disconnects while the network resets itself. I tried using Pixel Experience Q - same issue. Tried Pie aswell and had the same issue. It only happens on my university WiFi(5 Ghz, campus wide wifi. MSCHAPV2, PEAP, no certificates) and not on any other wifi. Going back to HavocOS 2.7 or any other ROM of that time(3-4 months ago) fixes the issue but any newer ROM causes this.
my logcat of the event has been attached^
I'd appreciate any help. Thanks.

I'd appreciate any help.
Is there anything else that I should be providing? I'm not sure and would appreciate any insight. :/

Hey I too have the same issue. Looks like it happens because of the enterprise wifi. This bug is there even in the latest MIUI and all the lastest roms. I have no idea on how to fix this. Please help.