Call waiting - no notification - OnePlus 3 Questions & Answers

Hello, I have two sims one UK and one from another country, when someone calls me and I am already having conversation on UK sim, I keep being informed that someone else is trying to call me so everything is good, but when I am on call on another there is no notification and the other person just gets disconnected after 3-5 seconds. When I have both sims from my current country it all works perfectly. I have been in contact with my foreign service provider and I have call waiting being set up on the sim and it works fine when I am abroad, does anybody have similar issue? I have looked through forum but couldn't find any clues or workarounds in this matter. I am on CM13 at the moment.

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Conference calling - does it work on your network?

Hi all,
I haven't seen anyone mention one of the more hyped selling points of the TP2 - the Conference Call feature. Does it work? And more importantly, does it work on your network?
The reason I ask is I am on T-Mobile UK with my Kaiser (and my TP2 when it arrives tomorrow) and I cannot conference two calls together - when I press the conference button, it says "The operation failed". A little research on Google seems to suggest that T-Mo UK are probably the only operator globally who have this functionality disabled.
Will this mean that if the TP2 is ever released through T-Mo retail that it will have this function disabled? Is that why it has been delayed - they are upgrading their network to cope with conference calling?
I'd be interested to know, especially if anyone has already got one on T-Mo UK.
Cheers
Im not sure about T-Mo
However, the option you need is Call Waiting & Call Conferancing; this option usually need to be activated with your telco under VAS (Value Added Service); some may charge to have this function activated
the best you call T Mobile and ask specifically about this function
As I feared, T-Mobile UK don't support conference calling so that feature doesn't work. I phoned CS yesterday to ask, and all I got was "it may be supported in the future".
Actually I found my TyTn II did this yesterday. I put a call on hold and saw an exciting 'conference button' in the Opal dialer. Pushed it and I got some message about not being supported.
I'm on Orange.
UK o2 = No no no.
Pretty pointless feature when the network doesn't support it, I don' think many uk networks do, they have their own conference facitlity. (232 on o2 I think)
T-mobile (ben) Netherlands: Yes, totally works. did it with my old hermes 2 months ago
Vodafone in the Netherlands supports the conference call facility.
A question I have in relation to this subject: does anyone know whether it is possible to have incoming phone calls join in a conference call? Example: I have a call with A on the TP2 and B calls me on the TP2 during that call with A. Can I organize that B will join the same call? If so, how? Is there any maximum of calls that one can have in such a conference call?
Cheers, dela
Telus in Canada does NOT support the feature. BOOOO!
It works on Vodafone Portugal
Vodafone in NZ supports this but only for account customers and by default it's turned off but can be turned on request for free of cost.
DelaVandaag said:
Vodafone in the Netherlands supports the conference call facility.
A question I have in relation to this subject: does anyone know whether it is possible to have incoming phone calls join in a conference call? Example: I have a call with A on the TP2 and B calls me on the TP2 during that call with A. Can I organize that B will join the same call? If so, how? Is there any maximum of calls that one can have in such a conference call?
Cheers, dela
Click to expand...
Click to collapse
Yes, you can pick up the incoming phone call and join in a conference call you started (works well with Orange & unbranded TP2).
Oliy said:
Hi all,
I haven't seen anyone mention one of the more hyped selling points of the TP2 - the Conference Call feature. Does it work? And more importantly, does it work on your network?
The reason I ask is I am on T-Mobile UK with my Kaiser (and my TP2 when it arrives tomorrow) and I cannot conference two calls together - when I press the conference button, it says "The operation failed". A little research on Google seems to suggest that T-Mo UK are probably the only operator globally who have this functionality disabled.
Will this mean that if the TP2 is ever released through T-Mo retail that it will have this function disabled? Is that why it has been delayed - they are upgrading their network to cope with conference calling?
I'd be interested to know, especially if anyone has already got one on T-Mo UK.
Cheers
Click to expand...
Click to collapse
Your device already has Conference Call capability.
Using Conference Call is a network dependent feature. So, based on what your operator allows you (your phone subscription/plan) - you will be able to use it or not.
BTW, Conf call works great on Orange ...
Hope it helps.
Movistar in Mexico supports it, even on Prepaid, and for free (you just have to pay for both calls)
All Israeli operators (Orange, Cellcom & Pelefone) supports this feature
Mine worked twice on att then stopped, Any ideas why? I used it right when I got the phone then about 2 1/2 weeks ago and it worked great, now when I try I get two people on hold and the other call doesnt come through, and when I try to take the two peopl off hold is says it cant take the call off hold. Do you guys think this is a carrier issue like att not wanting me to use it or a phone/hardware issue?
Works with Vodafone UK
The Conference feature (aka Multiparty) requires a flag in your number's profile in HLR called "MPTY" activated. without that activated, you cannot make a conference call. contact your operator for this.
nfreire said:
It works on Vodafone Portugal
Click to expand...
Click to collapse
I've been trying it on TMN-Portugal but no success at all...
credinho said:
I've been trying it on TMN-Portugal but no success at all...
Click to expand...
Click to collapse
Actually my operator also have this service, but it wasn't activated in my number. Now it is... but it seems that the other numbers that you are making the conference also need to have this service activated, otherwise it won't work.

Intermitant Calls, out and in

Hi,
Just started with a problem with the defy not ringin out first time and now incoming calls are just as bad with people going to voicemail after they hear nothing for a few seconds no ringing just straight to voicemail.
Then it will ring in and out a few times then play up. The rest of the phones ok
Its a unbranded model all i have done is root and it updated itself to firmware 2.1 update.
seemed to be working great till a day or two ago. Have wiped and rebooted but its just the same.
On Vodafone and the sim works fine in other phones without problem.
Cheers Dave
You may be in poor 2g/3g signal zone.
I have the same isue in france with SFR provider (French Vodafone) it is a known issue here.
the problem is the same with all brand phone I've tried in the same area
Just force 2g on your phone and in/out call works fine

"Can't be completed as dialed" using Tmobile prepaid

Hey guys, I picked up a T-mobile galaxy S3 over black friday, and have been trying to use it with wifi calling for the past few days. Here is what is happening: I updated to 4.1.1 as soon as I opened the package. I setup the phone and then tried wifi calling. It worked the fiirst call, but later when I put dial in the number, within 1-2 seconds I get a "Your call cannot completed as dailed" message. I couldn't even dial 611 for customer care, but I could call my voicemail.... So after talking to customer service, I was told a new sim card would likely fix the problem, so I went to a T-mo store and got a new sim. They tested it once there, and it worked for the first call. I got home and it was doing the same thing as before, telling me my call couldn't be completed as dialed. On a whim, I put my wife's postpaid T-mobile sim card into the S3, and lo and behold, it worked, every time, flawlessly. I switched my prepaid sim back into the phone and it reverted back to not working again. I called up T-mo and talked to someone who finally referred my case to some engineers, but its been 3 days and I haven't heard back.
If I lived in a place with a good T-mobile signal, I wouldn't care, but I get less than 1 bar, and my data is edge, so I kind of need wifi calling. I've noticed when first booting up with my prepaid sim, I sometimes get the Reg99 cannot connect erorr, and the Err01 "Invalid certificate" error. But then the wifi calling later shows connected with a blue phone symbol saying it is ready to make calls.
I can sometimes receive calls over the wifi, but I can never make calls, only to my voicemail. I find it odd though that my wife's postpaid sim works just fine, every time, but my prepaid doesn't. Even though they are both the latest sim model number TM9190 or whatever.
If anyone has any ideas or solutions to this, please let me know.
srogue said:
Hey guys, I picked up a T-mobile galaxy S3 over black friday, and have been trying to use it with wifi calling for the past few days. Here is what is happening: I updated to 4.1.1 as soon as I opened the package. I setup the phone and then tried wifi calling. It worked the fiirst call, but later when I put dial in the number, within 1-2 seconds I get a "Your call cannot completed as dailed" message. I couldn't even dial 611 for customer care, but I could call my voicemail.... So after talking to customer service, I was told a new sim card would likely fix the problem, so I went to a T-mo store and got a new sim. They tested it once there, and it worked for the first call. I got home and it was doing the same thing as before, telling me my call couldn't be completed as dialed. On a whim, I put my wife's postpaid T-mobile sim card into the S3, and lo and behold, it worked, every time, flawlessly. I switched my prepaid sim back into the phone and it reverted back to not working again. I called up T-mo and talked to someone who finally referred my case to some engineers, but its been 3 days and I haven't heard back.
If I lived in a place with a good T-mobile signal, I wouldn't care, but I get less than 1 bar, and my data is edge, so I kind of need wifi calling. I've noticed when first booting up with my prepaid sim, I sometimes get the Reg99 cannot connect erorr, and the Err01 "Invalid certificate" error. But then the wifi calling later shows connected with a blue phone symbol saying it is ready to make calls.
I can sometimes receive calls over the wifi, but I can never make calls, only to my voicemail. I find it odd though that my wife's postpaid sim works just fine, every time, but my prepaid doesn't. Even though they are both the latest sim model number TM9190 or whatever.
If anyone has any ideas or solutions to this, please let me know.
Click to expand...
Click to collapse
I'm guessing my issue is a very rare one. I don't really see Nything else on the forums about it. Anyone have any guesses? Or anything I can test.

Stock Rom Carrier Unlocked not able to receive/send calls but can use data and SMS

Hey,
So I bought an LG G4 from Vodafone UK and unlocked it so i could use my Three sim card.
Weird thing is I can use Mobile Data and send/receive SMS if I am on 4G. The person who is calling me can hear the calling tone as if they were calling someone but I don't actually receive the call.
When I switch to 2G/3G it simply does not connect to the network.
I have done a factory reset and it did not fix the problem.
Any ideas?
Thanks
tl;dr : can't send/receive calls but can use data and send/receive sms (through 4G only)
radurock said:
Hey,
So I bought an LG G4 from Vodafone UK and unlocked it so i could use my Three sim card.
Weird thing is I can use Mobile Data and send/receive SMS if I am on 4G. The person who is calling me can hear the calling tone as if they were calling someone but I don't actually receive the call.
When I switch to 2G/3G it simply does not connect to the network.
I have done a factory reset and it did not fix the problem.
Any ideas?
Thanks
tl;dr : can't send/receive calls but can use data and send/receive sms (through 4G only)
Click to expand...
Click to collapse
Maybe you need to register your IMEI on the network? That's what I had to for At&t.
How would you go about doing that? Apart from manually searching for networks (I can see other carriers like O2, vodafone, EE, but I can't see my carrier Three ; the person living in the flat with me is on Three as well and they have no problem, so it's not a coverage issue. I have bought the phone from vodafone, unlocked it and trying to use it with Three).
Do I have to call Three for this IMEI registration or..?
Thanks
Hani88 said:
for me the battery is quite good
are you using V20B???
and did you do a factory reset after updating to MM ?
Sent from my LG-H815 using Tapatalk
Click to expand...
Click to collapse
Best bet will be calling your service prover and have them register it. I had to call At&t and have them register my IMEI since I couldn't use internet or make calls.
Just had a long chat over the phone with them and in the end he said the 'engineers' found a 'problem' on their end and it should be fixed in @5 days. He didn't want to mention what problem or how / why it happened. Oh well fingers crossed.
Thanks!
update : so after about 4 calls with customer service (across 3 weeks) and 2 trips to the 'Three' store i'm basically stuck and would need your help guys.
backstory : I've contacted them once at the start of January and they said they found the issue and they will fix it by 7th of January which didn't Happen. On 7th of January they said they are sorry and it will be fixed by 14th of January which didn't happen either. After that I received a message that the problem was fixed and if i had any other issues I should contact them, which I did because the problem was not solved. Yesterday I went to the shop again and the 'tech' guy told me that it should be working and he gave me a new sim card just to be sure, and if that didn't work he said call customer support and ask for contract cancellation. Today I got called by customer service and I have told them that it still doesn't work and I'm paying for something I can't use and I've been told to request contract cancellation which they didn't believe and said I have to pay the rest of the contract length in order to cancel, which is absurd. I went again to the shop and the new customer service person that was assigned to me said they don't have any tech people and she seemed she didn't believe when i said i talked to one the day before. She tested the sim on their phones and it worked and also she took my phone "in the back (strange cause she said they don't have any tech)" and said I had my phone set to 2G (which I didn't, it was set to 2G/3G) and that that was the problem. strangely, for that split moment i had one bar for 3g and the call went through. Straight after that phone stopped working (it was just that small area in which it worked). I told her that that's not the problem and she's like "welp you didn't make your contract at the store, you made it online so I can't help you , you have to call customer service". So I'm basically stuck with a contract which I can't use and I have no idea what to do.
problem : I cannot register to the Three network (only in small random areas, few of them) but I have no problems with other SIM cards from other Carriers (Orange, EE, Vodafone, O2). I have bought the phone from vodafone and unlocked it and last time customer service told me they can't give support to phones that were not bought from their store. So I'm stuck here with a phone contract which I can not use to make or receive calls, but I can use the mobile data and send receive texts. I am considering rooting it and puting a custom ROM , although I'm not sure if that would fix the problems (maybe issues with certain bandwiths?.
Any help or ideas much appreciated!
Same problem here
Hi all. Same problem here but different issue.
Origin : G4 buy used on November. IMEI fully working and not blacklisted (calling my french phone provider this morning, it tell me that's IMEI is ok and phone not stollen and it try to repair remotly my carrier but didn't work)
Problem : Fully working since i picked up a call and answer ... and then when the call is finish i tried to call someone 10 minutes after and totally loose signal(connection) (Orange/Sosh)
What i've maid before : Playing a lot @ a boring but adictive game. High temperature since 3 days because i play a lot but temperature decrease when i stop playing.
I've used a legal app to record a patern and make some actions without my intervention (RepetiTouch Free (root)) to make races in the game.
That's all ! No drop, no hit, nothing ! Just playing, having a call, hang off and then want to make an other call and nothing.
Since the last 6 hours : Signal ok - Data ok (can go on internet / GAPPS etc..) - CAN receive and send SMS (i've don't trie MMS) !!! but .... can't receive and can't send any call.
I was on Genesys 3.5 and i've update to 3.7 when i see the problem, believing that's it will fixe the issue but ... no ....
Formating and going to stock ROM but with root SU etc..... Can't receive and send call too ....
I'm going to back to stock with KDZ .... but i really believe that's it will not work .....
AND .... to finish and kill my joy .... i've unlock bootloader with LG tools since 2 month .....so my phone is no longer under warranty.
My SIM card work on others phones ... other sim cards didn't work in my phone ....
If anyone have this issue ... please tell us
Sorry bro cant help you here. Never heard of that problem before but my idea is that you should refund that phone back to Vodafone UK.

S20 Ultra Exynos missing calls intermittently

So I have used my S20 Ultra since March this year.
I've noticed that the cellular network just "sleeps" and doesn't receive calls/SMSes after some time of phone idling/usage on WiFi.
I tried googling and found many other users reporting similar issues, noticing also that it seems majority if not all are Exynos variant users (not based in US).
Personally, this is definitely not a telco provider issue as I have had this issue on my old SIM (which was working fine on my old phone) and new SIM that I recently got after switching providers to see if the issue went away.
For me, sometimes the calls come in a few minutes late, and then the phone rings but when picking up, the call just gets stuck because the other party is no longer calling.
This is particularly noticeable as due to mostly staying home during COVID-19.
Toggling flight mode to "wake" the cellular network makes the phone be able to receive calls again.
Forum thread for reference: https://us.community.samsung.com/t5/Galaxy-S20/S20-Ultra-not-receiving-calls/td-p/1190155
Lucky me. Didn't have this problem on my s20+ exynos
Sent from my SM-G985F using Tapatalk
lynxlok94 said:
So I have used my S20 Ultra since March this year.
I've noticed that the cellular network just "sleeps" and doesn't receive calls/SMSes after some time of phone idling/usage on WiFi.
I tried googling and found many other users reporting similar issues, noticing also that it seems majority if not all are Exynos variant users (not based in US).
Personally, this is definitely not a telco provider issue as I have had this issue on my old SIM (which was working fine on my old phone) and new SIM that I recently got after switching providers to see if the issue went away.
For me, sometimes the calls come in a few minutes late, and then the phone rings but when picking up, the call just gets stuck because the other party is no longer calling.
This is particularly noticeable as due to mostly staying home during COVID-19.
Toggling flight mode to "wake" the cellular network makes the phone be able to receive calls again.
Click to expand...
Click to collapse
I also have this issue (S20+ exynos, dual sim). I use wifi at home/work and I had several missed calls and delayed text messages during this time.
Now I turned on the text alerts about the missed calls. At least when my phone connects again to the network I get these notifications.
I am also having this issue. People call and it rings out at their end but not at my end. Is there any fix?
Try switching the active number to slot 2. I tried it for a couple of days and I think it was better. I have switched back to slot 1 to monitor as I just got the ATE6 update and wanna see if it changed anything.
I had this issue and figured out what was causing it. You need to disable VoLTE if you are not registered to use this service on your carrier's network.
ctp9 said:
I had this issue and figured out what was causing it. You need to disable VoLTE if you are not registered to use this service on your carrier's network.
Click to expand...
Click to collapse
My sim cards are already registered to use VoLTE, my carrier notified me a few months ago about it.
I tried to disable VoLTE on both sim cards. It was OK for 2 weeks until now.
I got a new missed call notification text message and after 5 minutes a message from the caller.
Now I enabled VoLTE again for one sim card. Let's see if there will be more missed calls with this setting.

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