Nokia 8110 4g volte option is not showing after recent update due to this unable to make calls.
Same thing happens to me (Nokia 8110 4G VOLTE missing)
Very disappointed! 😣
Why don't you temporarily swap a 3G/4G simcard from a friend to see whether you assumption that "uppgrading your phone number subscription to 3G/4G" works? That would be interesting.
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