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Hello Axon 7 enthusiasts!
Tried to do WiFi calling in Cancun back in October, got " REG99 - Unable to Connect". Now, I'm getting this message home too. I'm not using on the regular basis the WiFi calling, but It is useful overseas.
Please note, I'm using UltraMobile service with SIM 1 and ProjectFi data only with SIM 2.
Anyone dealt with this REG99 issue?