Forum Discussion
OnePlus 8-5G Wifi Calling has no sound
My new OnePlus 8-5G phone (TMobile in US) cannot consistently send/receive wifi calls. Once answered, there is no sound on the OnePlus 8-5G phone while the other end can hear OK. I've tried updating the phone's software (it is up to date) and I have updated the firmware on my router (which works with wifi calling with other phones: iPhone 11, iphone8, Droid Turbo 2, Motorlla Razr MAXX). I also tried disabling any battery saving features on the device and even did a factory rest of it (with no apps installed). I have also tried rebooting the phone once I have connected to the wifi router. Phone has same issues on any wifi router I have connected to. browsing is fine, only wifi calling is a problem.
My family has been experiencing this as well, across OnePlus and Samsung devices. I just found this link on a Reddit thread and many users have reported it correcting this issue for them. It involves opening firewall ports up at your router. The article is filed under "WiFi calling on a corporate network" so how would we find it, right? Llamadas Wi-Fi en una red corporativa | Asistencia de T-Mobile
Summary of the article:
Cortafuegos
Bloque de direcciones IPv4: 208.54.0.0/16:
PORT / PROTOCOL / DESCRIPTION
Port: 500 / UDP / IPsec - IKE : Authentication [WFC 2.0]
Port: 4500 / UDP / IPsec - NAT traversal : Encrypted voice traffic [WFC 2.0]
Port: 5061 / TCP + UDP / SIP/TLS : Encrypted SIP [WFC 1.0]Bloque de direcciones IPv4: 66.94.0.0/19:
PORT / PROTOCOL / DESCRIPTION
Port: 443 / TCP / HTTPS : Used for handset authentication [WFC 1.0]
Port: 993 / TCP / IMAP/SSL : Visual Voicemail [WFC 1.0]También incluye en la lista aprobada (Whitelist) el servidor CRL para DIGITS OTT y WFC 1.0: crl.t-mobile.com 206.29.177.36
I was having the same problem and got it to work by setting ‘Calling preference’ to ‘Cellular preferred’ (the option is in the same place an ‘Enable Wi-Fi Calling on my OnePlus Nord N20).
My guess is 'Cellular preferred' has the phone connect using cellular, then switches to the network. So not much help if you don't have cell service, but it helps me as my cellular is just weak, but good enough to connect.
sakaches wrote:
Same, wifi calling not working on Oneplus8t+. Anyone with any update on resolving wifi-calling issue?
There was a previous response that ended up working for me: https://community.t-mobile.com/network-coverage-5/oneplus-8-5g-wifi-calling-has-no-sound-32868?postid=131724#post131724
The key for me was to turn off “Carrier video calling”.
In the Settings app, either search for “Carrier video calling” or navigate “Network & Internet” > “SIMs” > “Carrier video calling”.
I restarted my phone just to be sure, called someone and could hear them on the other end.
This problem has been bugging me for years on my Pixel 5.
