Hello Curious,
You should be able to test your SIM in a different device.
I think the WF723 version might be the better option. As far as I can tell, both the WF720 and WF721 are only compatible with the 2G and '3G' networks (see here and here). On the other hand, it appears as though the WF723 version is also compatible with voice-over-LTE (voLTE) and LTE networks (see here). The additional LTE compatibility might be relevent as Rogers is in the process of decommissioning the GSM networks (see here). While there has been some delays to that timeline, I would expect the full GSM sunset to occur in the near future. You can view the updated band/frequency compatibility here. Going forward, I'm not sure if there will be plans to decommission the UMTS (WCDMA) networks in favour for LTE and 5G in the future.
With regards to Name Display, you are correct in that functionality was not available with the WF720 model. However, I believe it was available with the WF721 model. When that version was first introduced, there was discussion whether old grandfathered plans also had Name Display included. I think it should be available with grandfathered plans as well (see here). I think the newer model should also be compatible with Name Display.
If you would like to verify whether old grandfathered plans include Name Display, you would need to contact customer service. They can also be contacted via Live Chat, Facebook, or Twitter. Those methods can be accessed via the contact page posted above.
Hope this helps 😀
Cheers
