WLAN-Telefonie: Nie wieder schlechter Empfang! 
Der Artikel von @heiseonline zeigt, wie man unter Android und iOS #WiFiCalling aktiviert, um über WLAN zu telefonieren. 
So klappt's auch in der Bahn oder im Keller! 
Mehr dazu: https://www.heise.de/tipps-tricks/Telefonieren-ueber-WLAN-so-geht-s-4676767.html #WLAN #Telefonie #Tipps #Tricks #lifehack
Telefonieren über WLAN (WiFi-Calling/VoWiFi) verbessert die Sprachqualität & Rufaufbau, besonders bei schlechtem Mobilfunkempfang. EVS ("HD Voice Plus") sorgt für kristallklare Gespräche. Prepaid-Kunden können es auch nutzen! 
#WiFiCalling #VoWiFi #Mobilfunk #Heise #lifehack
https://www.heise.de/hintergrund/Telefonieren-per-WiFi-Calling-6003497.html
A #PSA for anyone living, staying, entering or even travelling to/from #Australia:
Apparently, #Australia decided to mandate it's #GSM systems to be shutdown because some #GalaxyBrainChair wanted to yeet #2G & #3G and demand everything to use #4G & #5G when in fact #VoLTE support is spotty at best and #EmergencyCalling oftentimes is explicitly hardcoded to not use #WIFIcalling or VoLTE as providing #triangulation and #LocationData via #SS7 is a desired feature when someone calls EMS, Fire Dept or the Police for help...
So essentially #tourists and anyone who hasn't an explicitly fully VoLTE-functional device they tested and verified to also do #EmergencyCalls via VoLTE are fecked with no reception when they need it the most!
This WILL KILL PEOPLE!!!
As much as we want to bitch about #GSM & #GPRS / #UMTS being #outdated and #inefficient, there are reasons to at least keep 2G available - ranging from lower power consumption to higher resilience in emergency situations.
#NewZealand for example does shutdown non-#EmergencyCalls during severe #Earthquakes so that people trapped and/or in need of urgent assistance can get through to dispatch operators and everyone else has to get in line and take a number aka. use #SMS or if existing #Internet to say "I'm fine!"...
If the Ozzies really need that juicy #UHF #SubGHz #Spectrum it's totally feasible to instead change the #allocations and reconfigure #CellularNetworks to use lesser bandwith for 2G (i.e. only keeping the absolute mininum of channels available for any service) and thus clear up space...
And to add insult to injury, Australia passed a #NorthKorea|n-alike #CellPhone #ImportBan for any device that doesn't do i.e. the bespoke proprietary garbage that i.e. #Telstra, #Vodafone and #Optus do with the #baseband modems of their #branded devices...
Seriously, which #TechIlliterate dickhead decided it's a good idea to do that #3Gshutdown in Australia without even a basic 2G network up and running at all?
I've become a fan of #GrapheneOS since I overcame my disgust of Google and bought a used Pixel phone. @GrapheneOS is a great example of usable security.
It's easier to install and use than most other aftermarket #Android distributions I tried. And it has been a bug-free experience for me – until 1 or 2 weeks ago when the telephone stopped ringing when someone called. Phone calls did not even raise a full-screen notification any more. Only when I happend to watch the notification area was I able to see that someone is calling me. Most of the time, I only saw it when they had given up.
Then yesterday the phone finally rang again! Today, this was broken again. Until I found a workaround! All I had to do was to disable WiFi telephony – a feature I had enabled right after I installed GrapheneOS and which had seemed to worked well.
Update: According to @GrapheneOS, the annoyance I described is not related to #GrapheneOS but most likely caused by the carrier: https://grapheneos.social/@GrapheneOS/113046499971181147
So the #S24Ultra has #WiFiCalling on AT&T but doesn't say it's using "AT&T Wi-Fi Calling" as the carrier. I figured this out because it has the same behavior with MMS as on my mom's #Pixel5A and my #iPhone6SPlus .
Anyone that uses #WiFiCalling (does it matter if I specify on #ATT or a comparable network?) on #Android : If you get #spam calls from random numbers, does the #Fossify / #SimpleMobileTools dialer app work ok with the feature to only allow calls from your contacts through (as the SimpleMobileTools dialer app's description on #FDroid mentions) if using Wi-Fi Calling? I mentioned both SMT and Fossify as not everyone might be aware of both, and the feature is only mentioned on SMT dialer's page.
Should I look into getting a new phone? I've had my #iPhone6SPlus since May 2018 which is the longest I've had a phone but the problem is headphone jacks basically don't exist unless I want to buy an #Xperia or a #Zenfone but neither of them have #WiFiCalling on #ATT and the Xperias have way too weird of an aspect ratio for me. At least the #S24Ultra has a squared-off screen and 7 years of updates, but no #HeadphoneJack. Should I do two phones like I did when I got my #Lumia830?
I recently switched phones from the OnePlus 9 Pro to the Google Pixel 8 Pro, and so far I’m very happy, apart from the fact that I lost one feature.
I live in suburban Dublin, but the mobile signal to my home isn’t that great. It’s OK at one side of the building, but often cuts off altogether at the other side. And so I’ve come to rely upon Wi-Fi Calling to ensure I can make and receive calls from anywhere in the house.
I get my mobile service from GoMo, which is the no-frills sub-brand of Eir (formerly Meteor). And with my OnePlus phone, the Wi-Fi Calling worked flawlessly. But when I switched to the Pixel, I found that the option to enable it wasn’t in the settings.
I did a quick search on the internet and quickly found that this is a long-standing issue with Pixel phones on GoMo/Eir going back a few generations. It’s not that Wi-Fi Calling doesn’t work, it’s that Eir hasn’t certified the Pixel range to work with Wi-Fi Calling. And apparently the phone model has to be on an approved list of devices for a given network for the option to appear in menus to enable it.
So it’s not a question of whether Wi-Fi Calling works on a Pixel 8 Pro (it certainly does), it’s more that nobody has bothered to test it and update the approved list of devices. And Eir has no current motivation to remedy the situation, as they don’t sell the Google Pixel range of phones.
The solution is Pixel IMS
Thank goodness for the efforts of the Korean developer of Pixel IMS, which enables individuals to enable Wi-Fi Calling on their Pixel devices.
It’s a bit of an involved process that includes installing an app called Shizuku from the Google Store, then installing the latest version of the Pixel IMS app from GitHub. This then gives people to option to enable or disable certain features that may be restricted, such as WiFi Calling (labeled as VoWiFi -Voice over WiFi) and VoLTE (Voice over LTE).
Thankfully the developer has detailed some pretty good instructions in English, and the process is fairly easy – and doesn’t require connecting the phone to a PC, or rooting the phone.
And I can confirm that it works! I’ve successfully enabled and tested that Wi-Fi Calling works for my Pixel 8 Pro on GoMo. And I can once again make and receive calls from anywhere in my house.
I understand that I will need to repeat the steps to re-enable Wi-Fi Calling after each Android update, but for me that’s a small inconvenience.
https://richardbloomfield.blog/2023/12/pixel-8-pro-wi-fi-calling-on-gomo-in-ireland/
Anyone know of an #openSource #wifiCalling dialler app for #android ?
My network (#plusnet) shut down and I've moved to #idMobile who resell #ThreeMobileNetwork which has rubbish reception. They say enable wifi-calling which is available in Samsung Phone app but I'm pretty sure tells Samsung about every call I make.
Until needing this feature I've used Simple Dialler from #fDroid which is good but doesn't support wifi calling
There is no technical reason why Wi-Fi Calling/voice over Wi-Fi can't work on #Linux phones. There could be a server running on the modem that sends your microphone audio to the other caller, and it can give received audio to userspace daemon which is then forwarded to the app using it. This would also apply to text messages. Only thing preventing this is #BigTelecom not wanting to give access to anyone else besides #Apple (if that's the case).
I've said it before and I'll say it again: #WiFiCalling and #femtocells are generally scams that let #carriers get away with subpar/nonexistent cellular coverage without lifting a finger while locking users into a select few #phones and operating system images (if they live in a deadzone) and extracting the full bill's payment.
Mal ne Frage an die #Globetrotter unter euch: wenn ich in ein außereuropäisches Land reise, sagen wir #Japan, ist Roaming grundsätzlich ausgeschaltet, beziehungsweise ich schalte es aus. Funktioniert Wi-Fi Calling im WLAN trotzdem? Blocken hiesige Netzbetreiber, ausländische IPs? Danke 
#wificalling #wlananruf
If you have any of these phones, you're going to watch to patch it!! If you can't, then turn off Wi-Fi calling!
Mobile devices from Vivo, including those in the S16, S15, S6, X70, X60 and X30 series;
The Pixel 6 and Pixel 7 series of devices from Google;
any wearables that use the Exynos W920 chipset; and
any vehicles that use the Exynos Auto T5123 chipset.
Google tells users of some Android phones: Nuke voice calling to avoid infection - Enlarge / Images of the Samsung Galaxy S21, which runs with an Exynos c... - https://arstechnica.com/?p=1925040 #vulnerabilities #wificalling #baseband #android #samsung #biz #volte
Covered this during Tech Talk Thursdays and the amount of devices affected are vast and wide!
Google: Turn off VoLTE, Wi-Fi calling due to severe Exynos modem vulnerabilities on Pixel 6, more https://9to5google.com/2023/03/16/google-exynos-modem-vulnerabilities/
#WiFiCalling is just an excuse for carriers to be lazy and not spend anything on improving their coverage (and thus profiting) at the expense of consumer choice in which phones and OS's to use. If there were no #femtocell from them in 2015, we wouldn't have been able to use our Lumias at home on #ATT.
