Weird call disconnects - Xiaomi Redmi Note 4 Questions & Answers

So I got a weird issue. I got this phone a week ago and flashed Lineage OS with no custom kernel. Everything works just fine, very happy with it, except this weird bug when taking a phone call. Reception and calling/taking calls work great but whenever you talk on the phone, it get's disconnected. The amount of time I can talk varies, sometimes it's 30 minutes sometimes it's 5. You have to call back again and continue the conversation. This is extremely annoying! I use the firmware available here: https://forum.xda-developers.com/red...08-04-t3651537 Not sure if firmware issue or rom/kernel. I live in Sweden and has Comviq/Tele 2 as my carrier, if that matters.

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[Q] Randomly not recieving calls etc

Greetings from sunny ???? notts
Been a long time lurker, but now i am in need of some help.
Had the galaxy s2 for a couple of weeks now and most of the time it works great. but occasionaly it will not recieve calls or sms. i get no notifications of missed calls, voicemail messages etc. to the caller it just goes straight to voicemail. A few hours later i get all? the sms come in at once, sometimes a voicemail notification but no missed calls. when this happens i have a good signal and am able to call out.
Its definately not because i was using data services at the time and not lack of signal.
I have rooted the phone, but still with a stock rom (ke7 ?)
Anyone got any ideas ?
The handset ? The sim card ? or the network ?
All the best
have fun
rich
dik64 said:
Greetings from sunny ???? notts
Been a long time lurker, but now i am in need of some help.
Had the galaxy s2 for a couple of weeks now and most of the time it works great. but occasionaly it will not recieve calls or sms. i get no notifications of missed calls, voicemail messages etc. to the caller it just goes straight to voicemail. A few hours later i get all? the sms come in at once, sometimes a voicemail notification but no missed calls. when this happens i have a good signal and am able to call out.
Its definately not because i was using data services at the time and not lack of signal.
I have rooted the phone, but still with a stock rom (ke7 ?)
Anyone got any ideas ?
The handset ? The sim card ? or the network ?
All the best
have fun
rich
Click to expand...
Click to collapse
i have the same issue as you ...
the only solution that i found is to set my phone is GSM MODE only but you will loose your 3g/h data and only use EDGE
dik64 said:
Greetings from sunny ???? notts
Been a long time lurker, but now i am in need of some help.
Had the galaxy s2 for a couple of weeks now and most of the time it works great. but occasionaly it will not recieve calls or sms. i get no notifications of missed calls, voicemail messages etc. to the caller it just goes straight to voicemail. A few hours later i get all? the sms come in at once, sometimes a voicemail notification but no missed calls. when this happens i have a good signal and am able to call out.
Its definately not because i was using data services at the time and not lack of signal.
I have rooted the phone, but still with a stock rom (ke7 ?)
Anyone got any ideas ?
The handset ? The sim card ? or the network ?
All the best
have fun
rich
Click to expand...
Click to collapse
Lo Rich. Miggy round?(private joke)
Was wondering, was the phone on charge when it missed the calls/texts?
it could be any number of things, really. if your sim card is not fairly new i would replace it just to be on the safe side. you might try hard resetting your phone (which will delete all your info so back it up first) and starting over.
do you have any apps that block data connections at various times? if so i would delete that app and use the phone for a few days without it to see if the issue goes away.
have you flashed a different radio? if so, try the one that matches your rom, or try the newest one you can find.
there are many possible causes, but if i were in your position i would hard reset it and not install any apps that might interfere with your connection to the network and i would make sure my sim card was fairly new. if the issue still persists you might try asking for an exchange if possible.
If upu have the phone on GSM only then incoming calls go directly to voicemail when data bursts are happening (which is often). So switch to 3g to fix.
If you're not on GSM then I have no idea, maybe no signal in that area...
Thanx
Ok theres possibly been a development with this.
But first a big thanx to all your suggestions, and my response to them.
Seems a bit pointless having such a device then crippling some of it just to get the basic phone part to work. although switching to gsm only may be a temporary solution.
Fault occurs either on charge or not.
Fault has occured whilst at home where all data connections are disabled and wi-fi exclusively used. I havent tried flashing a different radio yet, but it is still on the latest ?? ke7 ? firmware. Sim card was brand new a couple of weeks ago.
So gsm only wont help, but as above when at home i use wi-fi.
Now i spoke to my network, talk mobile a few days ago, they say it will take more than 5 days for their IT dept to contact me to try and sort this ! as i can still make calls they dont see it as a major fault ??? Looks like customer care is not important to them.
I have also spoke to the company i purchased from(wish i hadnt as customer DISatisfaction appears high on their list of prioritys)mobiles.co.uk. I was speaking to someone at their Fullfillment team yesterday about getting another handset sent out, but for some reason i couldnt finish arranging it yesterday. Then early yesterday eve one of their guys rang me back out of the blue to say he had been looking into my fault and had found something not quite right with the original connection they had set up. He was honest enough to admit it was a bit beyond his knowledge and was getting someone from the connections dept to help him. they are going to re-do my connection and for me to wait 24hrs for this to be sorted and hopefully it should be ok after that. All credit to Leeroy at mobiles.co.uk.
The only problem now is other than getting someone to ring me every 1/2hr, how do i know if its working or not ?
I guess the best i can do is leave it a while and see if i get any more complaints that people cant get hold of me.
Once again many thanx for all your suggestions, i will update this when i am confident it has or hasnt been fixed.
many thanx
have fun
rich
this happens to me perhaps every other day
i get a txt saying so and so called but left no message
my reception is fine and my phone has been sitting in one place on 3 bars
i call the person and they said they tried to call and it went straight to voicemail
the txt arrives instantly so i am putting up with just calling people back as its not very frequent
plus i have 1200 mins so i need to use them!
I have the same problem and I believe mine has something to do with the way the towers handle the switch from 3g to edge. You said you get a text message showing a missed call, I think that would be usefull to me also until we can get this fixed. Are you using google voice to get your sms, if not what?
I have the exact same problem, and it's beginning to interfere with my work. The HSDPA signal here is very weak. So I switched it to GSM only, which resolved my signal problem, but I keep missing calls. All I get is a sms saying that I missed a call. Would my problems be solved if I had full HSDPA signal the entire time? You said that calls are missed when data bursts are happening on GSM only? I almost never receive a call the first time. Only after ~3 attempts would they get a hold of me.
Any help would be very much appreciated.

Using T-Mobile Radio UVLK1 Not Getting Phone Calls

Hey guys, this did not happen at first, but today I have been experiencing some big issues with my phone.
I have been using the UVLK1 ICS based radio since I am an AT&T Galaxy Note user on the T-Mobile Network.
People have been calling me and my phone isn't ringing. I am getting Google Voice e-mails for voicemails they leave me but the phone never rang. I am at work where I always have gotten great service at all times. I rebooted the phone and it is still doing the same thing.
Any ideas?
Now I can't even make calls...the phone disconnects the call right after I tap the make call button...
Now I flashed the Blaze 4G radio, doing the same thing. Can't receive calls and immediately disconnecting when trying to place calls.
Data isn't working either..
Pulled the SIM card, put back in, problem solved. Weird!
It is doing it again! This morning it happened and I had to pull battery and SIM, reboot, it worked but shortly after stopped working...
issues with TMobile radios on galaxy note
I have experienced similar problems as well, but not to the extent to where my phone doesn't work at all. Since TMobile sells the Note now, I'm sure someone will port the full ROM or at least the radio.
avantcs said:
I have experienced similar problems as well, but not to the extent to where my phone doesn't work at all. Since TMobile sells the Note now, I'm sure someone will port the full ROM or at least the radio.
Click to expand...
Click to collapse
i'm using the SGH-I727 with various T-Mobile radios and having the same issue, kinda. It will work for about 3-5 hours then stop. The signal meter still works, 2-3 bars in my area, even flucuates. However it will say (Searching) and nothing comes in or goes out. It does not work again until rebooted. Then the process repeats.
Any other t-mobile subscribers with you? The crazy weather might be a cause.
Can you put your sim in your back up phone?

My internet connection has gone ?

Hi all.
Yesterday morning i was using my phone and all was fine (i get a suprisingly quick net speed on my phone usually) but at some point last night it just slowed right down or in most cases has stopped .
I have a good signal and the H+ symbol on my screen so i know it's not a signal issue. I'm able to make phone calls fine.
It'll load up google eventually after about a minute or so (used to take less than 5 secs) but the connection times out trying to load anything else, even the play store!
I rang three who told me first to take out sim card, clean it ,wait a while the it should be fine. When that didn't work they told me to do a factory reset and now that hasn't worked i'm on a 48 hour waiting list for there technical dept to ring me ...
Can anyone suggest anything else that could be causing these issues ?
I'm using the standard rooted kernels/roms from the sammobile site and have just upgraded from version 4.0.3 to 4.0.4 and it's still the same.
Thanks
Dave :good:

Trouble making/receiving calls and texts.

Been having issues since last night. Samsung Galaxy S3 Three UK Network.
Since about 5pm last night i have been unable to make/receive calls and texts. When i go to dial a number it says dialling on the screen and doesn't do anything. Signal is full. If i try it perhaps four or five times it will eventually dial out but after talking for a few minutes the voice goes like a robot and is as if someone is talking under water. Cant make anything out. Same when someone calls me. Goes to answerphone and after about 5 attempts at calling me my phone will ring.
Texts are coming up fail every now and then and my 3G signal keeps alternating between H+,H and 3g and only works every few minutes.
Have called Three but its torture. They say no problem at their end and have escalated my issue which can take up to THREE days for someone to respond.
As phone is an S3 and as its a micro sim i cant try the sim in another phone as my other phones are normal sized sims. Did try putting it in anyway but the phone wouldnt detect it. Have also tried a factory reset with no joy.
So frustrating as it seems to be intermittent.
Any ideas :good:
Is this since after the jb update? You may wish to try flashing the same firmware using odin and see that sorts it out. 3G signal on Three basically means nothing is working anyway.. lousy network
Sent from my GT-I9300 using xda premium

[Q] No sound during calls and signal drop after 30 seconds

Hey there,
I've had my S3 for almost 2 years now (So definitely no warranty) and around 2 weeks ago it started acting out:
Whenever I answered or made a call, there would be no sound (media players could work fine in the background but no call sound) and after around 30 seconds the network signal would drop and take a minute or so to reconnect.
Texts, Apps and general internet usage works just fine but buttom line i've been without a proper phone to make calls with for the last 2 weeks.
I've tried flashing CM11 Installer version (used to be stock) and that helped for like a day, then I got an advice to flash a new modem but that didn't help either.
I've seen that this problem happened to some people around the web about 2 years ago but haven't managed to find a single [SOLVED] thread.
So, does ANYONE have any clue as to what's going on or how to solve it?\
I would really hate to shed 300$ on a new phone right about now =P
Flash the latest stock firmware for your country with Odin, then factory reset before booting. If still the same then you have a hardware fault.
Sent from my GT-I9300 using Tapatalk
Hello,
Were you ever able to find a solution for your problem? I have a customer who is complaining of the same issue(s).
She said that she is unable to make phone calls or send SMS messages while on Data (2G, 3G, etc.), as well as her signal drops repeatedly.
I was hoping that you'd be able to assist me if you were able to find your solution, as I think the next step would be a hardware (Antenna) change in the phone itself, if it isn't the software itself that's the issue.

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