I have small group of U260 and U270 Electrons in New Zealand. The U260s are to connect to Spark while the U270s connect to 2 Degrees. However, as you can see from the console, One U270 device is provisioned to Spark - and is experiencing connection issues. I assume this is because there is a mis-match between the 2G frequency bands and the U-BLox U260 modem.
I have opened a help desk ticket but wanted to see if anyone has suggestions.