Is there a way to do the following on a dual-SIM phone?
- receive a call at SIM 1
- forward the received call to a specified number using SIM 2
Most apps use call forwarding feature of the mobile network, so they use the same SIM card.
Most dual SIM phones are dual-standby only. When one SIM is "in call" the other is not available. Because of this I think the first issue is finding a phone with two separated active radios. After this it all comes down to software.