You need to place Surfroam SIM in Android or iPhone first for initial region setup.
First, you need to put Surfroam SIM in any unlocked smartphone or tablet and wait up to 10 minutes to constant signal, it is needed to get auto settings to SIM according to your current location.
Then take Surfroam SIM out and put it in your mobile router.
Please refer to your router manual how to:
1. enable Roaming
2. set APN, it should be globaldata (all lowercase and written as one word) in the APN field, no need for username and password)
Check data after few minutes.