Hi madfer & welcome to the community! 
In order to function, your phone must be compatible with the Fido network, which uses GSM, UMTS, HSPA and HSPA+ at 850 MHz and 1900 MHz. To access LTE network, the phone must be compatible with:
- 700 MHz on Band 17;
- 1700/2100 MHz on Band 4;
- 2600 MHz on Band 7.
Since your phone is unlocked, it is very possible that you will need to configure your settings in order to use data. Here's how to do it on an Android phone:
- Tap on Settings > Wireless & Networks > Mobile Networks > Access Point Names;
- Once on the APN screen, press the Options button on the device;
- Tap on New APN
- Enter a name into the APN Name field.
- Please insert the following APN settings:
APN Settings:
- APN: Fido-core-appl1.apn
- If you have a LTE device, use the following setting: LTEMOBILE.APN
MMS (Picture & Video Messaging Settings):
- MMSC: http://mms.fido.ca
- MMS Proxy: 205.151.11.13
- MMS Port: 80
- Leave the following fields blank: Proxy, Port, User Name, Password, Server
- Press the Options button on your device, tap on Save in order to save the APN settings.
- Restart the phone and try browsing the Internet.
NOTE: The created APN will show up on the APNs screen. To activate the APN, tap on the radio button located in front of APN.
Hope this helps!
Cheers!
