Cannot make/receive calls, but mobile data/SMS/WiFi/Bluetooth work fine. - ONE Q&A, Help & Troubleshooting

I want to start by saying thank you to everyone on this forum. I have learned so much from reading the guides and resources (particularly those by @Gawd, @spanna, @Heisenberg, @EddyOS, and @Timmmmaaahh. I know some may have moved on but you legacy remains.).
This issue seems to have come up before on the forum, but I have not found one that matches my own situation with a solution, unless I am missing something. I am also lucky in that I have access to another near identical OPO without the issue for comparison. I am visiting my family and we all have OPO.
I have noticed that my phone will have decent to good signal (1-4 bars of Tomobile LTE) be able to use cellular data and send SMS, but not make and receive phone calls in certain areas. I would have been content saying this was a reception/carrier issue. However, I am visiting family for Memorial day and have been able to troubleshoot this with their phones. I bought my parents OPOs when it came out and my brother has a Find7, so we all have essentially the same hardware. For my troubleshooting I used primarily my mother's OPO (not updated since CM11S) and occasionally my brother's Find7. Both my mother and I have the 64 GB edition of OPO purchased around Oct-Nov 2014. Both are cobranded with Cyanogen, though mine was purchased a month or two prior to hers. When comparing the OPOs I notice her phone is able to send and receive calls in places where mine is not able. We have similar reception. I have cellular data and can still SMS. The issue is just with calls. I have tried the following (i have bolded things which I noted were different):
Basic stuff:
1) Making and receiving calls with both phones side by side. Her phone can send and receive calls in all areas (even with just one bar), while mine can only make and receive calls in some areas. My brothers Find7 has identical performance as my mothers phone.
2)Toggling airplane mode. -- Same result.
3)Toggling LTEonly, 3g only, and 2g only. -- Same result.
4)Verifying APN -- Identical for all three phones
5)Swapping SIM Cards -- both phones perform the same irrespective of which sim card is in it.
6)Verfied IMEI -- present in all phones.
7)Verifying signal strength (dBm/asu) in phone settings (*#*#INFO#*#*) -- near identical between phones. Our dBm numbers were the same but my asu number was sometimes triple her phone's asu. Her's was identical to the Find7.
More advanced stuff:
8) Removing the back cover and making sure the terminal are making contact to the backplate antennae.
9) Changing roms and firmware. No success.
- I had recently upgraded from the final release COS 13 to the latest Oreo RR with a clean wipe using TWRP. I was running RR when I first started this.
- First I tried flashing my recovery file with TWRP. It says it ran successfully, but didn't make any changes to the system.
- Since my mothers phone has no issues I tried to replicate her setup. I fastboot flashed the cm-11.0-XNPH05Q-bacon-signed-fastboot.zip provided by spannaa.
- I found some similar posts to my problem which linked to gawds firmware. I verified that both my mother's working OPO and mine had the same OS (XNPH05Q) and baseband (c7-00020) I also tried flashing different firmwares with no benefit.
- I tried fastboot flashing back to COS 11 XNPH33R (what my OPO came out out of the box with).
- I then used EddyOS guide to return device to stock COS 13.1.2. with no change.
- Thinking another new ROM may include a better firmware. I most recently did a clean install of AOSPExtedned and currently have baseband c6-0241.
Going forward:
- I was thinking of flashing gawds firmwares with AOSPExtedned. Is this safe?
- Looking to disable/unlink my google voice account from my cell number. My mom does not have this set-up. I noticed a delay in making calls, and that my google voice account has a log of all my missed calls (those that never make it to my cell). Maybe it interfering with my calls going in and out.
- Any suggestions on diagnostics I can run while I have access to my Mom's functioning OPO.
Much thanks for everyone's help.

Related

[MOD] Enable "Phone" Features on T-Mobile T869

To give you a little context, I came over to the T869 from the Galaxy Tab 2 7.0, which is basically the WiFi-only sibling of the "Plus" T869 that T-Mobile now sells. Being a WiFi only device, it had the "phone" parts of the GUI disabled, like the Phone and Messaging apps won't show up or run and you can't sync BlueTooth headsets. The T869 has the MMS app enabled, but no phone, so the same mod I did on the P3113 is useful on this one.
Thankfully, even though it seems fairly arcane, Wes Foster made a nice utility to make this much easier (and more n00b friendly) to do.
To do this (and other framework mods), first you should pull the framework-res.apk file out of the ROM.zip file you're using. Open the zip and go into /system/framework. In there you'll find framework-res.apk, which you should extract.
Drop that file into the "place-framework-res-here" folder within the Mod tool, then run the tool and enter option 1.
This will unpack the files to the "files-to-edit" folder.
Inside there you'll need to go to \framework-res.apk\res\values\
You'll need to modify the file bools.xml. Find this line and change "false" to "true":
Code:
[B]<bool name="config_voice_capable">false</bool>[/B]
Once you make that change, you're all set to "enable" phone features. You can also make other changes as desired.
Here's a partial guide: http://www.igottadroid.com/ModMarket/Listings/Darkside Agent1621289.html
Once you're done modifying the file, save it, and then run through options 2, 3, and 4 on the mod tool.
Once its done, you'll have a flashable ZIP file named "update.zip" inside the final-zip-file folder.
For extra safety, I reccomend making a copy of the update.zip called revert_framework.zip.
Open this copy in 7-Zip, go into the /system/framework folder, and delete the framework-res.apk file there. Replace it with the unmodified one from your ROM, then close 7-Zip. Now you have a second "flashable" ZIP that will put the untouched framework back onto your tablet, which comes in handy if you managed to break something and cannot boot
I did not make the tool, and found it in this thread: http://forum.xda-developers.com/showthread.php?t=1823701
I am simply reposting it over here since I found it very helpful
I stumbled across this thread when I was about to ask about the international version...is there any chance you could post a video of this in action? Not that I don't believe this works, but I remember following a thread for the T-Mobile Springboard where a few people said a certain update would allow for phone/SMS, but then others who actively tried were unable to do so because of how T-Mobile picks up the IMEI (and doesn't let you use a phone SIM with a tablet).
If this works (and if it also keeps T-Mobile 4G), then this would be a MUCH better solution than buying an international 7.0 Plus (which is not only ~$200 more expensive on average but would only work on 2G on T-Mobile US).
Well, the T869 has SMS enabled natively. I got a "data only" pay-as-you-go plan for a 4G / WiFi hotspot earlier this year, and recently got the T869 with a contact. Both of these came with a 10 digit phone number for administrative purposes, and even the hotspot had the ability to receive SMS.
This particular trick doesn't do anything to the back end services themselves, so its not like you magically get phone service just by doing this.
I use a combination of SIP and Google Voice to do phone-type stuff without a phone.
I prefer this hack because it enables the native dialer, and pretty much all the good softphone solutions allow you to "integrate" with the native call log & dialer setup, so you just go to the normal "People" app and click someone's phone # and are then given an option to call them.
Without this hack, you must go into whatever 3rd party app you're using and initiate phone calls from there.
Remember, I initially started doing this on my WiFi Only GT-P3113 (which is basically a T869 without 4G or vibration).
I was never able to get the "Native" messaging app to behave quite right. There's a Google Voice SMS Integration app, and it can sync your GV texting into the native SMS app's text history, but it can't (or couldn't) trigger native SMS notifications correctly.
I am kinda over texting in general, as I have it piped through GoogleTalk. I receive SMS at my GoogleVoice phone #, and they are automatically forwarded to GoogleTalk via a third party web service called GVMax, which is free. GV Max is basically a GoogleVoice to XMPP bridge. After federating in my other IM accounts, GoogleTalk is now my one-stop-shop for textual communications.
Just my $0.02.
Isn't the "International" version so-called because its got a quad band radio that works on like any carrier?
Also, I have heard (though this is not confirmed) that the "International" edition doesn't come with an IR blaster, whereas the T869 does. I dunno if that's true or something you'd care about, but food for thought
magus57 said:
I stumbled across this thread when I was about to ask about the international version...is there any chance you could post a video of this in action? Not that I don't believe this works, but I remember following a thread for the T-Mobile Springboard where a few people said a certain update would allow for phone/SMS, but then others who actively tried were unable to do so because of how T-Mobile picks up the IMEI (and doesn't let you use a phone SIM with a tablet).
If this works (and if it also keeps T-Mobile 4G), then this would be a MUCH better solution than buying an international 7.0 Plus (which is not only ~$200 more expensive on average but would only work on 2G on T-Mobile US).
Click to expand...
Click to collapse
Well from what I remember, the reviews I read about the 7.0 Plus were regarding the international version and all of them mentioned an IR blaster - but regardless, that'd be one of my least-used features of the tablet. Kinda disappointed that it'd still only be calls over data - I think I'd pay the extra $200 and suffer 2G speeds (at least until T-Mobile 1900Mhz roll-out comes to Chicago) for GSM calls alone, as I'd rather not deal with a separate data plan or tethering data off my phone to get calls.
magus57 said:
Well from what I remember, the reviews I read about the 7.0 Plus were regarding the international version and all of them mentioned an IR blaster - but regardless, that'd be one of my least-used features of the tablet. Kinda disappointed that it'd still only be calls over data - I think I'd pay the extra $200 and suffer 2G speeds (at least until T-Mobile 1900Mhz roll-out comes to Chicago) for GSM calls alone, as I'd rather not deal with a separate data plan or tethering data off my phone to get calls.
Click to expand...
Click to collapse
Yeah that's kindof a deal breaker. Out here in Portland OR we have 4G in most places, and I'm either at work (in an office) or at home 90% of the time, where I have a high speed WiFi hookup, AND I almost never talk on the phone, so the data-only setup is perfect for guys like me.
GSM only would pretty much make that a dealbreaker, since I suspect the audio quality would be pretty terrible.
DivinityCycle said:
Yeah that's kindof a deal breaker. Out here in Portland OR we have 4G in most places, and I'm either at work (in an office) or at home 90% of the time, where I have a high speed WiFi hookup, AND I almost never talk on the phone, so the data-only setup is perfect for guys like me.
GSM only would pretty much make that a dealbreaker, since I suspect the audio quality would be pretty terrible.
Click to expand...
Click to collapse
While I do have a pretty stable 4G connection wherever I go (except for my brother's apartment, where ALL reception is horrible) or have access to my home's faster Wifi connection, and I don't talk much, I still get much better GSM service everywhere and can still get calls when I have to turn off data to save battery (since I use the data connection quite a bit when I'm away from a charger). And I haven't really had complaints with GSM audio or found voice over 4G/Wifi to be much clearer especially when the person on the other end is usually using GSM too..
I mean if you were doing some sorta data-only internet phone setup like SIP or GrooveIP or something. That's what I am using, and for it to sound alright you need decent bandwidth. Actually I ought to test out my stuff on a 2G connection and see how bad it is Should be interesting!
will this trick work on stock ICS build?
Galaxy t869
Does anyone know if this will allow making "regular" calls using my "regular" SIM CARD?
Thanks,
Jonathan
jon5407 said:
Does anyone know if this will allow making "regular" calls using my "regular" SIM CARD?
Thanks,
Jonathan
Click to expand...
Click to collapse
I seriously doubt it, no way to be truly sure without trying it though.
T869UVLG7 ICS phone call hack
Hey I'm one the noobs mentioned in your post. I'm living in the Bahamas and a proud owner of the T869.First I have no idea what the ROM.zip is and whether this is supposed to be done on a desktop or the tab itself.I am rooted but running UVLG7 ICS UPDATE.It'd be awesome if I could get this working .My sim card is data and 3g/4g ready.Could you please /anyone inform. Thanks to u guys with your mod skills they're mad skills.Thanks man
Thanks mate~~
I did this on the T869 originally locked to T-Mobile, and it worked without a problem~!!!!
PS: >>> Be sure to first wipe cache. I skipped that the first time and i almost created an atomic bomb
PPS: >>> Also, the backup revert.zip is a brilliant idea, it's what i used when i messed up the first time!
Hey mate!
thanks again for the tutorial!
I have followed it to completion.
I however, can only do simple things like loading airtime [our networks are prepaid] and check balance,
but I can't seem to be able to make calls
I have an unlocked T869
---------- Post added at 06:34 PM ---------- Previous post was at 06:33 PM ----------
dubblecup said:
Hey I'm one the noobs mentioned in your post. I'm living in the Bahamas and a proud owner of the T869.First I have no idea what the ROM.zip is and whether this is supposed to be done on a desktop or the tab itself.I am rooted but running UVLG7 ICS UPDATE.It'd be awesome if I could get this working .My sim card is data and 3g/4g ready.Could you please /anyone inform. Thanks to u guys with your mod skills they're mad skills.Thanks man
Click to expand...
Click to collapse
Hey,
are you trying to follow the tutorial and are having problems???
Please be a little more clear where you're stuck so we can help
-accidental double post-
Read the thread.
To quote myself: "This particular trick doesn't do anything to the back end services themselves, so its not like you magically get phone service just by doing this."
Also I have upgraded a couple of times since I posted about this crap and no longer use my Samsung (now using a Nexus 7 2013 which is way better)

[Q] OnePlusOne - Numerous Issues?!

Hi everyone,
I recently bought the phone from T-Dimension and it's having some issues and I was wondering if anyone could help me out or if they've run into something similar. The issue is I can't seem to send/receive any calls and I can't send/receive any texts. The bizarre thing is it works for the first 45 seconds when I reboot but then locks me out straight after that. The phone is issued from Hong Kong and had Color OS on it but I flashed CyanogenMod onto it, here's some more information.
- The phone is connected to Amaysim, which runs of the Optus network I believe, so it's connected onto the mobile network just fine.
- The Micro-SIM card I'm using is brand new, it's put in correctly into the slot, meaning upside down facing towards the bottom of the phone, so that's fine.
- I've tested the SIM with other phones and it works perfectly fine.
- When it locks me after 45 seconds, it fluctuates from saying, "Call Not Sent" to just it being stuck on the dialling screen.
- After being locked out, I can't receive any calls either, I've tried calling the phone but nothing shows up.
- After being locked out, I can't receive any messages either, when I try to send a message it just stays stuck in sending, and if I restart the phone, it just says the text failed.
- I've contacted Amaysim Help Desk, and they say my problems lie with the phone being locked, and I'll have to contact the manufacturer to sort it out.
- I've also contacted my supplier, who seems to have trouble finding out the issue.
- APN settings are set correctly with my mobile carrier.
- Already done a factory reset, didn't fix the issue.
- Put the preferred network type to 3G under Mobile Network settings.
- I flashed CyanogenMod 11S using this tutorial from youtube, /watch?v=QDKOEtN9pbo and downloaded the cm-11.0-XNPH22R-bacon-signed.zip file.
Please can anyone help me with issue, sorry for long wall of text, I really want this phone to work!
Cheers,
You probably should flash another modem & then try.Here
http://forum.xda-developers.com/showthread.php?t=2824139
Sent from my One using XDA Premium 4 mobile app
LukaZilla said:
Hi everyone,
I recently bought the phone from T-Dimension and it's having some issues and I was wondering if anyone could help me out or if they've run into something similar. The issue is I can't seem to send/receive any calls and I can't send/receive any texts. The bizarre thing is it works for the first 45 seconds when I reboot but then locks me out straight after that. The phone is issued from Hong Kong and had Color OS on it but I flashed CyanogenMod onto it, here's some more information.
- The phone is connected to Amaysim, which runs of the Optus network I believe, so it's connected onto the mobile network just fine.
- The Micro-SIM card I'm using is brand new, it's put in correctly into the slot, meaning upside down facing towards the bottom of the phone, so that's fine.
- I've tested the SIM with other phones and it works perfectly fine.
- When it locks me after 45 seconds, it fluctuates from saying, "Call Not Sent" to just it being stuck on the dialling screen.
- After being locked out, I can't receive any calls either, I've tried calling the phone but nothing shows up.
- After being locked out, I can't receive any messages either, when I try to send a message it just stays stuck in sending, and if I restart the phone, it just says the text failed.
- I've contacted Amaysim Help Desk, and they say my problems lie with the phone being locked, and I'll have to contact the manufacturer to sort it out.
- I've also contacted my supplier, who seems to have trouble finding out the issue.
- APN settings are set correctly with my mobile carrier.
- Already done a factory reset, didn't fix the issue.
- Put the preferred network type to 3G under Mobile Network settings.
- I flashed CyanogenMod 11S using this tutorial from youtube, /watch?v=QDKOEtN9pbo and downloaded the cm-11.0-XNPH22R-bacon-signed.zip file.
Please can anyone help me with issue, sorry for long wall of text, I really want this phone to work!
Cheers,
Click to expand...
Click to collapse
Hey there fellow Aussie. See link provided by other member, it should fix you up.
Transmitted via Bacon
That modem actually proved to be worse for me.. Before I didnt have stable 3G connection.. that modem made my 4G connection worse too. The best, and most stable modem I have found thus far is in the latest nightlies. It is still very very very weak when it comes to 3G connectivity but its better than everything else I have tried. And believe me, I have tried pretty much every rom there is on this forum including XNPH22R, XNPH25R, MahdiRom, CyanHacker, and All the nightlys.
The only one I havent tried is Color OS because I am afraid it will lock my bootloader again.

Phone call issues with D850. Hardware??

When I purchased this phone on Swappa, everything worked, with the exception of phone calls. I assumed it was a ROM issue, but I have since tried mulitiple ROMs, with no success at resolving it. The culmination came this morning when I used the LG flash tool to fully restore it to factory settings, and the problem persists. The symptoms are as follows: when trying to make a call, the dialer opens, the call tries to connect, shows "dialing" then disconects. On a very rare occaision it will successfully connect, but I have yet to observe any pattern. Everything else works, sms, data, etc, and I have replaced the SIM card to rule that out. I will post a logcat in the first comment of when it fails, and I will try to get one of when it connects for comparison, but we'll see how that goes.
Code:
[ 02-15 15:28:14.035 4864: 4874 I/CallHandlerService ]
CallHandlerService - onDisconnected: Call{mCallId=6, mState=DISCONNECTED, mDisconnectCause=ERROR_UNSPECIFIED, mCapabilities=530, mConnectTime=0, mChildCallIds=[], mGatewayNumber=null, mGatewayPackage=null, mIdentification=CallIdentification{mCallId=6, mNumber=xxxxxxxxxx, mNumberPresentation=1, mCnapName=null, mCnapNamePresentation=0, mTelephonyCallerInfo={contactNumber=, okToGetTelephonyCallerInfo=false, cachedPhotoIcon=null, phoneNumber=, person_id=0, photoResource=0, name=, contactExists=false, contactExistsCount=0, cachedPhoto=null}}, mSsNotification=null, mConnectionInfo=ConnectionInfo{mCallId=6, mAddress=xxxxxxxxxx, mOriginalNumber=xxxxxxxxxx, mCdnipNumber=null, mToa=129}, mLine1Number=xxxxxxxxxxx, mSubscription=0, mRoamingCallIsIncoming=0, mRoamingRadMode=0, mRoamingPrefix=null, mIsConfConn=0, mPrivacyKeeperState=NONE}
[ 02-15 15:28:14.035 4864: 4864 I/CallHandlerService ]
CallHandlerService - ON_DISCONNECT_CALL: Call{mCallId=6, mState=DISCONNECTED, mDisconnectCause=ERROR_UNSPECIFIED, mCapabilities=530, mConnectTime=0, mChildCallIds=[], mGatewayNumber=null, mGatewayPackage=null, mIdentification=CallIdentification{mCallId=6, mNumber=xxxxxxxxxx, mNumberPresentation=1, mCnapName=null, mCnapNamePresentation=0, mTelephonyCallerInfo={contactNumber=, okToGetTelephonyCallerInfo=false, cachedPhotoIcon=null, phoneNumber=, person_id=0, photoResource=0, name=, contactExists=false, contactExistsCount=0, cachedPhoto=null}}, mSsNotification=null, mConnectionInfo=ConnectionInfo{mCallId=6, mAddress=xxxxxxxxxx, mOriginalNumber=xxxxxxxxxx, mCdnipNumber=null, mToa=129}, mLine1Number=xxxxxxxxxxx, mSubscription=0, mRoamingCallIsIncoming=0, mRoamingRadMode=0, mRoamingPrefix=null, mIsConfConn=0, mPrivacyKeeperState=NONE}
[ 02-15 15:28:14.035 1471: 1471 D/CallNotifier ]
onDisconnect: cause = ERROR_UNSPECIFIED, incoming = false, date = 1455568080816, subscription = 0
That seems to be the most relevant series of lines from the failure logcat. Full log attached, if anyone knows what specifically to look for.
I really don't know what to look for, and the full log is too long to post, so I will attach it here.
Does anyone have any ideas what is wrong, or what I need to do to get this device to work reliably? Is it possible that it is the SIM reader? (seems unlikely since SMS and data work, and calls work intermittently.) Also worth noting, calls seem to connect immediately after a reboot fairly consistently.
Bump?
Bump x 2?
Desperation bump? LG says they can only evaluate the device if I provide a copy of the original sales reciept, which the guy I bought it from says he can't get. He guarentees the device was working when he shipped it, though I have some doubts, as he did indicate he wasn't using it, just made some test calls, and the phone seems ot work immeidately aftera reboot... Any ideas at all??
rassawyer said:
Desperation bump? LG says they can only evaluate the device if I provide a copy of the original sales reciept, which the guy I bought it from says he can't get. He guarentees the device was working when he shipped it, though I have some doubts, as he did indicate he wasn't using it, just made some test calls, and the phone seems ot work immeidately aftera reboot... Any ideas at all??
Click to expand...
Click to collapse
I don't think it's hardware. Sounds like an internal setting got messed up. I assume you've cleared everything that's clearable from recovery.
I suggest you flash CM13. If you still have the problem, ask the CM guys for help.
I have the same problem. Wife has same phone, doesn't have problem (but has software version d85021q). I am currently using sock rooted 20f, flashed 21r modem. tried different roms all have the same problem. sim works fine in my old S4. data and texts work fine. Calls try but then stop with call ended. problems with receiving calls too. Signal strength is -108db same as hers, the S4 is about the same maybe -106db. here's a list I have tried.
1. stock KK rom
2. stock rooted 20f rom
3. RR 5.5.8 rom
4. fulmics 2.7 rom
5. latest cm 12.1 nightly
6. flashed 20f modem
7. flashed 21r modem
I would try flashing MM roms but without the baseband updates would I be in the same boat? Also worried about being stuck with MM if I want to return to LP.
I did pretty much everything possible to try to resolve this, with not success. I tried multiple custom roms, I used the LG Flash Tool to try multiple version of factory rom, and never had any luck. Always the same issue, everything worked but phone calls. I gave up, and bought a device with a shattered screen, and swapped the board over into my good body. Of anyone comes up with any ideas, I'm very interested. I have the equipment to even do on board repairs/component replacements, but I don't know what to try to replace, since the radio obviously works or data and texts wouldn't work.
I've tried pretty much everything imaginable from a software/firmware standpoint... I've tried multiple custom ROMs, I've used the LG Flash Tool to flash multiple version of stock, and multiple modems, etc. I always ended up with the same result. Everything worked but phone calls. I finally gave up and bought a device with a smashed screen, and swapped that board into my body. I'd still be interested if anyone has any insights. I have the equipment necessary to replace board level components, etc, but I don't have the equipment to test them, so I don't know what to try replacing. The radio is obviously functional, since text + data work...

No Voice Transmission during Phone Calls

(Duplicated from previous post as per suggestion by admin. See here: https://forum.xda-developers.com/general/help/voice-transmission-phone-calls-t3690651 See Addendum notes)
Hello! Long-time lurker, first time poster.
I have a sudden problem with my Android phone (Samsung Galaxy S6 running Android 7.0). Hopefully you bright gentlemen and gentle-ladies can help me:
Approximately 1 week ago (edit: 3 weeks ago), my phone stopped transmitting Voice data on phone calls. I cannot hear what the other user says on their phone, and they cannot hear me, however, pressing number keys DOES transmit the dial-tone to the other user (both ways). It does not matter if I call them or if they call me. It does not matter where I am physically, I have tried in several locations around the city (likely on several towers). It does not matter if they are using a mobile or land-line. (Addendum: Hangouts dialer functions perfectly with the hardware, before and after factory reset(s), Bluetooth headset works with Hangouts but not regular Phone)
During this time, all of my data connections work fine. Texts, Email and Browsing is unaffected. Phone performance is normal.
Since this has occurred, I have:
- Simulated battery disconnect
- Wiped Cache Partition
- Force-stopped the Phone app (all three instances)
- Verified the physical Microphone is working using the Voice Recorder app (it works fine)
- Booted the phone in Safe Mode
- Contacted my service provider to check in there was any problems with my account or transmissions.
- Transferred my Sim card to another device to test if my card/connection was ok. (Voice worked 100% on the secondary device)
- And lastly today (two weeks ago); Completed a Factory Reset
(Addendum:
- Flashed stock firmware from Sammobile via Odin
- Attempted to clean out the Microphones with toothpicks and blunt metal objects, just to be sure
- Plugged in and removed a wired headset as well as checking for debris)
I am sitting here now trying to understand how a hardware problem could possibly cause a failure of Voice encoding on only one app, and how to fix it. Or how a software problem survived the Factory Reset (and Firmware flash) into the fresh install. I did indeed try without any 3rd party apps being installed, without even adding my Google or Samsung accounts to the phone, just plain old Android; no dice.
Any suggestions?
I recall one fixing another phone that had a problem with its Capacitive Touch Screen being not sensitive enough/not reading presses problem by accessing a special menu that allowed me to re-download the driver. Is there anything like that for the Voice? (Addendum - I have looked at all the star ** codes available for this model and tried several, nothing has worked so far)
Thanks!
Thoughts today (Oct 31/17): I am not sure that flashing a custom rom is really what may fix the phone. I am willing to do so, but it is somewhat frowned upon by Canadian carriers (or at least it used to be). I was curious if it was a problem with Noise Cancellation or an SD Card problem as those are issues brought up when googling the issue. My current plan is to flash to a stock Android 6.0.1 and see if the phone works then. If so, then try the standard upgrade path. Any suggestions will be helpful!

Other side in calls can barely hear me in most calls

Hey guys,
since amazon is out of stock - and therefore, getting a replacement device is kind of difficult - and I'm still waiting for oneplus to respond, I'd like to hear from you if you encountered similar issues with your OP6:
During calls, I can hear the other side just fine, but the person on the other side can not hear me most of the time. Sometimes, it seems some shreds of voice are being transmitted. It happened on about 90% of calls. There are calls that are perfectly fine, but most of the time, the phone is unusable.
What I could test so far:
- it happens in handset mode, speakerphone and with a bluetooth headset
- it happens on both SIMs, swapping them does not change anything
- it happens on 2G as well as 3G (no VoLTE available yet)
- the microphone works fine if I use the audio recorder (outside of calls)
- calls made via VoIP-software seem not to be affected, though audio quality on the other side isn't that great either (but that might be unrelated)
- sometimes, it seems to happen mid-call
Both SIMs did obviously work fine in my previous device (OP3), signal strength in calls is about -70dBm, both SIMs are on T-Mobile (Germany).
I'm on an A6003 with OOS 5.1.5, Baseband is MPSS.AT.4.0.c2.10-00012-SDM845_GEN_PACK-1.147963.5, bootloader is unlocked and rooted with Magisk.
I did find a thread describing similiar issues on the oneplus-forums (https://forums.oneplus.com/threads/dual-sim-issues.838595/#post-18474985), but I'm currently unable to login to their forums, for whatever reason.
Can any of you guys give me a hint on what to test to narrow down if it's a hardware or a software issue or maybe even suggest a workaround?
I'm happy to provide more details where necessary.
I'll probably have to switch back to my OP3 anyway, so I could give the Android P beta a shot and see if it happens there as well.
Best Regards.
So, it turns out (*after* factory resetting and flashing Android P of course ><) that the echo test number I've been using is equally broken on otherwise working phones, so most of my test results are null and void. I'll give it some more testing...
Just a heads-up for users who may stumble upon this thread in the future: call quality problems are mostly gone after updating to 5.1.6 (and replacing SIM-cards).
I've bought a OP6 just three days ago and I've updated it immediately to OS 5.1.8 (I've also rooted it) and the phone calls problems (call drops and other person can't hear my voice sometimes) are present.
I hope OnePlus will fix the issues not so later...
Unfortunately, I can't rule out that replacing the SIM-cards actually fixed the issue - it might be worth a shot. I haven't had any issues since my last post.

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