After installing the sim card and subscribing to a 30 day data plan, my Note 4 did not directly connect to the data service. I followed the "data settings" from the speakout7eleven.ca support page but I was not getting any data connection until I made a setting change (thanks to another forum user). The main change I made was to change the "APN protocol" and "APN roaming protocol" to use "IPv4 only" (instead of "IPv4/IPv6"). Now I get the 3G data connection!

Here are my exact Samsung Galaxy Note 4 settings and I hope this solves your data connection issue.

From your Samsung Note 4 phone:
(1) Settings (icon) --> More Networks --> Mobile Networks --> Access Point Names (APN)
(2) Select the APN name you created and it will open up a page called "Edit access point" that corresponds to your APN name. Set all the fields to match these settings. I left my comments in round brackets below too. It worked for my unlocked Samsung Galaxy Note 4 in the Toronto area. Good luck!

Name: speakout7eleven
("speakout7eleven" does not have to be this name, give it any name you want)
APN: rogers-core-appl1.apn
Proxy: Not set
Port: Not set
Username: Not set
Password: Not set
Server: Not set
MMSC: http://mms.gprs.rogers.com
Multimedia message proxy: mmsproxy.rogers.com
Multimedia message port: 80
MCC: 302
(302 was auto assigned in my case)
MNC: 720
(720 was auto assigned in my case)
Authentication type: Not set
APN type: Not set
APN protocol: iPv4
APN roaming protocol: iPv4
Turn APN on/off: APN turned on.
Bearer: Unspecified
Mobile virtual network operator type: None
Mobile virtual network operator value: Not set