iphone 6s call forwarding not working

As per the title. Attempted setup from backup and as a whole new device. Reset, hard reset and full factory reset did nothing. Multiple SIM cards were essayed to no effect. Multiple PHONES were tried, with the exact same problem. Went through all level tech support both with the carrier (Bell Canada) and Apple. The latter took the relevant diagnostic data and submitted it to engineering.

I offer this information for anyone else suffering the same issue.

Has invited:

howapple - hello

Favor from:

My iPhone 6S with AT&T (GSM) has call forwarding that works just fine.

You have not told us who your cellular carrier is. Sorry, you did say Bell Canada. Not all carriers support call forwarding. See this:

iPhone: Understanding phone features - Apple Support

Nope, it appears Bell Canada is not a GSM carrier.

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