I have installed a brand new sim into a moto g 2nd gen. This is a new sim card for an already existing account that needs to be activated.
The instructions that were emailed through with the new sim say to either text READY to 789678 or go to the "Plan & Device" menu on the youraccount page.
The phone is in "emergency calls only" mode and will not send the text message, it is stuck on sending with no signal, I've had a wander and can not get it to get any signal. I'm guessing if it can not send the message it will not activate.
I am also not sure what to do on the "Plan & Device" section of the website. I'm not sure whether I need to register the phone against the sim as it currently show's the old phone, or how to activate the sim and where the options are within the Plan & Device section of the website.