New MIUI 11: config missing for VoWiFi on T-Mobile Austria


HulleBulle

Members
Jun 13, 2019
31
20
@Heppod - AWESOME!!!

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Only one problem has occurred.
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The settings made, didn't survive a reboot. The default profile "ROW_Commercial" got reactivated after a reboot.

I had to delete it and "Commercial-MTS" remained active even after a reboot!
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kudos @Heppod


PS: I knew the XDA thread allready, the tip with "Commercial MTS" made the difference...
 
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raku-cat

Members
Mar 9, 2018
37
20
Running in to a very similar issue, on my Mi Max 3 I was only able to have VoLTE working, and I figured VoWiFI just wasn't possible, but on my Mi Note 10 the global ROM had both working out of the box, this was on the exact same sim.
Only after I switched to xiaomi.eu did both stop working. Since my max 3 was working I'm thinking it could either be a change from miui 11 -> miui 12 (didn't try xiaomi.eu miui 11) or a difference between global and China/xiaomi.eu.

I tried the PDC tool but couldn't get the right profile for tmobile US to appear, and the modem settings through the kernel version and activity launcher both were fruitless.