Is the device VoLTE and WifiCalling capable with Yallo/Sunrise? We hear different opinions here, does anyone here have experience with the Mi9 and these providers?
Hello Robertoagu
I have had the MI9 for a while now and am very satisfied. If Yallo/Sunrise offers VoLTE and WifiCalling, it also works on the MI9. I have Swisscom and did not find the function in the phone settings. Googled and found codes to activate the function:
The two features can be activated by entering the following codes in the phone app: VoLTE: *#*#86583#*#* VoWiFi/WLAN-Anrufe: *#*#869434#*
After entering, the functions were available and could be activated in the settings. I did this and tested it. Provided the other party also has the function, the calls were crystal clear. I don't know why Xiaomi hides the function and doesn't activate it from the start.
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