yes, PM give you date every 90 days and you have to pay every 90 days. you mentioned 20gig with monthly(30days) plan is 60gig with 90 plan. the only difference 90 days price is cheaper than monthly plan.
Nothing on PM customer.I have 3 fido accounts of my family, they didn't like use PM. So I transferred the lines from Koodo to Fido by myself. It was little complicated than PM. Otherwise I saved 180 plus tax for 3 lines. but you don't need to pay 60 ...
you are same as me. I didn't understand this plan, and understood it. I have this plan because it is cheaper than monthly plan. PM give you 60 gig for 3 month at once and you get 5 dollars discount per month. As you have enough money and use PM long...
when I went to south korea last year I used the small wifi device from korea sim card. i thought it was cheapest than other company. but I found one of company at amazon nowdays. you should search it amazon. it is good price and easy.