The device works best with brand new, out of the box SIM cards.
Canada – Rogers, Bell, Telus, Tbaytel, MTS or Sasktel
USING ALTERNATE SIM CARDS
Network carrier’s main band; SIM cards must be compatible with at least one main frequency band to work.
SIM cards work on multiple frequencies, the more bands and frequencies your SIM card has in common with the devices listed frequencies, the better. It means your lone worker device will be able to pick up either the carrier’s 3G or 4G LTE more readily, in more places.
You want to especially make sure your device works on the carrier’s primary bands, as they represent the majority of the network signal they put out. Check with your local carrier to find out their main frequency band in your area.
*USA CANADA, SOUTH AMERICA – Comparable SIM cards must use UMTS / HSPA 850 / 1900 MHz (3G) and/or B2/B4/B12 (4G)
**EUROPE/UK, AFRICA & ASIA – Comparable SIM cards must use UMTS / HSPA 900 / 2100 MHz (3G) and/or B1/B3/B7/B8/B20 (4G)
OCEANIA AU/NZ -Comparable SIM cards must use 850/1900MHZ (3G) and/or B1/B3/B5/B7/B28 (4G)
Please check with your local cellular carrier to see if their SIM cards work on the correct frequencies or visit here for an updated list of possible carriers