@KerriC
Lucky you! You have an extremely sought after and coveted plan. I dont think there has ever been offered such an innovative and reasonably priced Canada/US Roaming plan by a Canadian provider prepaid or postpaid. At the time your plan was offered for an extra $10 you are recieving $70 worth of US Roaming services based on pm's 10 day US Roaming add on prices.
Other than not being able to access your 8gb of Canada only data plan while roaming in the US other providers charge $10 a day capped at $120 per month on top of the monthly plan price to roam in the US and access the customers monthly plan services and charge expensive roaming overage fees if they exceed their monthly plan allotments.
Hold onto this grandfathered pm plan as long as you can but be aware that holders of pm's $10 50/50 plan grandfathered at the same time as your plan are facing a 30% rate hike from $10 to $13 scheduled to take affect April 28th 2022. Even if your plan faces a similar rate hike from $60 to $78 it's still a good deal at that price but doesn't make a 30% rate acceptable or ethical. Especially on the lower end of the scale of what the $10 plan offers....50 outgoing texts and 50 anytime (in/out) minutes which is an increase of $0.03 per text and minute used or not.
Currently pm customers have found voice calling is still widely available via at&t despite their 3G network decommissioning deadline being passed. T-Mobile's 3G network decommissioning deadline is July 1st 2022. All other pm services are unaffected as data and texts have always been able to use both the 3G and 4G LTE networks. Once both of pm's US Roaming partners fully decommission their 3G networks and if pm/telus do not enable voLTE calling for pm customers at that time (eventually they have to but when...?) you will lose voice calling while roaming in the US.
However due to the nature of the plan you have you are in the best position for the following workaround for voice calls while roaming in the US. Your feedback should you choose to test any limitations to this workaround when you do travel to the US will be invaluable to regular pm customers who often travel to the US and use either pm's 10 day US Roaming add ons or are lucky enough to have the same plan as you.
Download a voip provider such as textnow or fongo. Call forward your pm phone number to your voip provider using your conditional and/or unconditional call forwarding options such as busy/declined. Do this in Canada before you leave but you should also be able to do this in the US because of your plan and/or connecting to a US cell tower should not cancel your call forwarding.
Now if you enter an area of the US with no 3G service your calls will call forward to your voip provider for you to answer. They will be "free" on wifi and use about 0.5mb/min while on mobile data. When calling out with no 3G service call display will show your voip provider number but you can also test if fongo's number transfer option will work in the US as it does here to display your pm phone number if that matters to you. (**will add link to @dabr 's post)
**Edit:
Oops....lol...I mean @kselmak 's post. I can't remember everything?!!😉
https://productioncommunity.publicmobile.ca/t5/Get-Support/Made-a-call-while-at-home-on-wifi-no-minu...
Testing these call forwarding options as a workaround until pm enables voLTE calling for its customers will be of particular interest to @Nezgar and a few other regular members such as @sheytoon @Dunkman that I can think of offhand that excites their techie brain endorphins....lol!🤓
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