-
-
Notifications
You must be signed in to change notification settings - Fork 96
New issue
Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.
By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.
Already on GitHub? Sign in to your account
Special calls redirect to emergency numbers when using an eSIM with VoLTE #199
Comments
Sounds like a weird carrier issue. Does your carrier enable VoLTE on your handset by default? |
Depends on the phone plan fwik, but yes. At the same time, I think this is carrier specific, as the three other carriers I tested with work fine. Other branded phones work just fine with VoLTE of that carrier. As such, there might be nothing the dev can do, but at least others who come across this issue will know. |
Hi, |
Try this |
I had same problem with physical SIM on same provider A1 Bulgaria |
Based on the info above, it might just be a carrier configuration problem |
I think the same as both physical and eSIM had same problem |
Update your physical SIM. It has to be one of their 5G series, otherwise the same thing happens. |
Card is brand new from yesterday |
There's no need to "update" a SIM card unless it's potentially damaged. It's main role is just to authenticate you to the carrier's network. After that the network will send the carrier configuration file which includes frequencies allowed to connect on |
Tried it, but doesn't work :/ I have also made a system reset lately and it didn't work as well |
Same problem here. I had no problems in the past, but today I was surprised. Any 0700 number ends up with 112. The workaround - disable VoLTE. Huge credit goes to @smsimeonov! I am currently in contact with A1 and will explain my findings. Answer from A1: |
@fillwithjoy1 This is maybe the case in general, but I know it isn't for this provider. They roll out 5G support based on the CCID of the SIM. Older cards that they have registered before a set date, do not work with 5G. I have confirmation from their support team. @bossnass At this point, I have received multiple calls from their support, and since we're a corporate user with upwards of a thousand users, we get very good support. They have even asked me to explain some workarounds I've done to get it working lol. To my knowledge, the customer service has recommended this project to at least two other corporate accounts based on my feedback (Which is wild, but this is Bulgaria after all). I know they are not as precise with typical clients of theirs. |
I have noticed that my carrier settings date has pretty different date as opposed to the people around me which are using Pixel phones. Even asked a guy who has Pixel 6. And guess what - no one else seems to have VoLTE setting available. It is just me. |
That's very very weird. Pixels don't (generally) contain much proprietary blobs in core system functions - it's (mostly) pure android after all. Either the carriers have messed up with their implementation that it "just works" on some and not on others. I know Samsung devices have different setups since they have workarounds to force backup calling and such. |
After the update to Android 14, there seems to be an issue with VoLTE on eSIM's. Whenever it is enabled and you try to call premium rate numbers (0700, *xx), freephone numbers (0800) and short codes (1xx, which require assited dialling to be enabled for them to work) redirect to the local emergency number (112 in my case).
I tried with multiple numbers and with a different eSIM (O2, UK) and the issue is the same. My main carrier for the eSIM I use in Bulgaria (A1) advised after investigation to try several things, which didn't work (reinstall the eSIM, leave only one Google profile, disable assisted dialling, roll down the network to 3G).
After a phone crash due to a known issue with Android Auto, I noticed when my phone rebooted, the 0700 call went through as normal (since I forgot to call through the physical sim). Because I am not rooted, Shizuku does not start on boot, so Pixel IMS was not working too. After a lot of tinkering, I found out the redirection only happened when VoLTE was enabled for the eSIM.
Enabling VoLTE for my physical sim (Vivacom) works as intended and I have set rules for 0700 numbers to go through that prior. Obviously this issue is only for people with eSIM's that have VoLTE enabled (and probably only for some carriers), but this is a problem nonetheless since a lot of the places I frequent have bad cellular coverage, but good internet coverage so VoLTE is a must for me.
As a side note, the VoWIFI call quality has also dropped since the update and it cuts a second every 10 seconds or so, but this is a carrier issue from what I was told.
To Reproduce
Steps to reproduce the behavior:
Expected behavior
Calls should go to their intended route, whether on VoLTE or not
Smartphone:
The text was updated successfully, but these errors were encountered: