[HELP]No Signal Bar and unable to receive calls - Galaxy Note 3 Q&A, Help & Troubleshooting

I have build a rom but for some reason the Carrier signal bar is empty. The signal LTE is marked but can only make call and not receive them. Another thing is that when on the dialer in a call if you press end the bottom half disappears but the call continues and does not end. I know there are a lot of devs out there maybe some one can help. I think its a file in the system/lib folder but for the life of me I can figure it out yet.

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Weird double call tone... help?

I just put in the SIM card on my smartphone and tried to call and I get a weird call tone - instead of one I get two overlapping ones, one being solid "beeeeep" and the other more like a bit vibrating one. And if the line is busy, the call ends with the usual "beep-beep-beep" but instead of the earphone it comes from a speakerphone and the worst thing is, it doesn't end until I press the "End talk" button whereas on other phones it usually ends after 3-4 beeps.
My question is - is this behaviour normal for the WM6 built-in phone? I kinda doubt it but still... And is there any decent replacement for the built-in call handler application or are they all based on the same built-in crap? I looked but I found not much other than skins...
I suspect that one call tone is from network and the other is from built in application when it gets the network signal, but there's not much I am able to do about it, so please, can anyone help?
Sounds like your profile. Do you have it set to ring, and vibrate at the same time? As for the end talk, that's normal for WM6 phones.
Actually it's not the profile, because I am talking about the tone that I hear from the earpiece - there's two of them. I am not talking about vibration, that's turned off. Just that the overlapping call tones - one is solid, other is vibrant beep. And it sucks that there's two of them...
In addition, here's one weird thing - when I put in SIM card from one operator, it does these annoying things, but when I put another, everything works fine. So it kind of depends on the SIM card somehow...
UPDATE: Got rid of the double call tone with a workaround - in registry under HKCU\\ControlPanel\Sounds\GCFTone changed the "sound" key value from "ringback.wav" to "silent.wav", for which I previously created an empty wav file full of silence and copied it to Windows folder.
The SIM card change didn't help. I currently conclude that
a) if the SIM card is SIM ToolKit capable, it creates this anomaly.
b) the problem lies with some unknown properties of the SIM.
The problem with busy tone coming out of speaker still persists. Haven't found a solution for it yet. Going to harrass Microsoft and the mobile operator with the issue now
What is weird is that as far as I know, this is the most advanced PPC forum and I don't get even ideas about which registry setting to look into or smth... That's a bit sad.

How do you hang up a second call?

I know I must be missing something easy here.
When I am on a call and I get a second call I can answer the call. I can transfer between the two calls, but I can't hang up on one of the calls. The second call seems to stay connected, even if the other party hung up the line.
How can I hang up on one of the calls without disconnecting both calls?
Thanks!
Yeah, it sucks. That's CDMA for ya. I always worry about it using my minutes because it's usually a landline that I stop talking to & switch back to a cell call.
I just drag the notifications bar down and click the end call button to the right of the person's name.

[Q]Random signal lost

right when im about to call someone, normally you can hear the phone ringing indicating that the call is going out... but that different on my end. The problem im having is right when i start to call someone the phone dont even ring and i loose complete signal in the menu bar at the top of my phone there an X at indicating that i have no service what so ever... i have to wait at least five min to get signal back so thing happen when i go on the internet... i loose complete signal and have to wait or even restart my phone to get my bars back... this happen about every other phone call...
anyone know why this happen?

Intermittent no in-call sound on incoming calls

Hi all,
I have a bone stock Moto G4 running Marshmallow and have been experiencing an intermittent problem when receiving calls, where neither I nor the caller can be heard. It's as if both of us have our mute buttons on, or as if neither of our speakers is working. The phone rings audibly and the call is logged correctly when I answer it, so evidently the call is "going through". All other sounds play normally; only in-call sound is affected.
When this happens, if I immediately call the person who called me, the call goes through and we can each hear each other fine; i.e., the problem only occurs intermittently on inbound calls.
If I reboot the phone, the problem goes away but eventually comes back.
I've seen numerous reports of "no sound during calls" posted here and elsewhere but most of the posts I've seen are pretty old, and don't seem to apply to my phone.
I posted this question over on the Lenovo site but I haven't gotten any responses so I thought I might also check with the experts here.
Thank you for any help.
Inbound Intermittent Call Ring
Hi,
I have a Zenfone 3 Max ZC520TL, with Android Nougat and the latest firmware (14.14.1808.121) running on T-Mobile network...
For the longest time I've had an issue with incoming calls most of the time going directly to voicemail, no matter how many bars I have...
I've been researching this for sometime now and most blogs (after they recommend advice on fixing the issue), want you as a final resort to do a backup and perform a Factory Reset...which people say didn't work, so that's wasted time...
I have an extremely easy fix for this which will take you about 30 seconds...
All you have to do is change your 'Preferred network type' from 4G to 2G...you can do this by going to: Settings/More/Cellular networks/Preferred network type...tap Preferred network type and choose 2G...that's it!!! Your phone will now ring every time there's an incoming call unless the number is blocked...
By choosing 2G, you may lessen the internet download, upload, movie and video watching speed and image download speed in texts but increase the signal range...I personally am willing to give up image in text speed to receive incoming calls with no issues...
If you want to download or upload or watch movies and videos from the internet or download images in texts instantly, just change the 2G setting back to 4G temporarily...
I hope this post helps and saves others from spending hours looking for a fix for this issue.
Cheers,
Vinny

Oreo Incoming call dual sim indicator?

Upgraded my dual sim s8 to Oreo. When the incoming call screen pops up there is seemingly no way to tell which sim the call is ringing. On Nougat there was a subtle identifier in the status bar where the receiving sim had an outline around it. With Oreo that's gone and I see no way to tell. Am I missing it? anyone?
If the call comes in while you are unlocked and on the device the small popup does actually identify which sim, as does the call history.
Seems like a pretty decent oversight on Samsung's part.
Answering my own question here which may help others. It seems you can only get that outline indicator in the status bar if you choose a default sim for calls. If you select "always ask" then there is no outline indicator at all. So for example if you choose sim 1 for calls, the outline will always be around the signal bar for sim 1, unless you are receiving an incoming call on sim 2, the outline moves over to sim2 while the phone is ringing so you can determine which sim is getting the call.
So once you choose a default sim for calls, (depsite the fact that you still have the choice of sim to dial from in the dialer app) it functions just like it did in Nougat.
This was a pain point for me. Thanks for the answer.
Still we should get an indicator that is quite clear and big instead of struggling to find out about very basic thing (which sim are we getting the call through). Looking forward for a fix on this

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