Use of a blacklisted phone
1. A blacklisted phone cannot make use of the SIM slot of your phone. With Wifi around, Textme can provide you with a local Canadian # (in my case a 647 #)
2. Texting (incoming and outgoing) is free. That part it excels.
3. Calling out (for Textme) is around 2 cents/min. Incoming call is free. Call quality is at par with Hangout Dialer. Call quality wise, I think Skype happens to be the best. But it charges for outgoing/incoming call and it can only allocate a US# at a monthly cost. Skype sms also costs extra too (unlike Textme)
Nowadays, getting a cheap phone/tablet with a good data plan (e.g. 3 Gb $15 a month for Fido plan) is easy. With that, one can easily generate a wifi hot spot wherever wifi is not around.
Overall it is workable even though it is not the best scenario. At least the victims of those Kijiji /Craiglist victim can make good use of their valued phone which otherwise would have been an expensive paper weight.
Fido $0 3Gb LTE + overage plan until Feb 2019