Unable to activate my iPhone

Click on this link to learn how to Set up cellular service on iPhone – Apple Support (AU)

Update your iPhone, iPad, or iPod touch - Apple Support

"If your iPhone can't be activated or an alert says the activation server is unavailable [or cannot be reached] or the SIM card is unsupported," read this support article to learn what to do. "If you can't activate your iPhone [or iPad]" - click here --> https://support.apple.com/HT201407

- Note the special link at the end of the document for contacting Apple if there are still problems.

'If you can‘t make or receive calls on your iPhone' click here --> https://support.apple.com/HT204027

'If you see No Service or Searching on your iPhone or iPad' click here --> https://support.apple.com/HT201415

With an iPhone 7 look at this document:

iPhone 7 Repair Program for "No Service" Issues - Certain US and Asian models

https://www.apple.com/support/iphone-7-no-service/

BUT:

"The program covers affected iPhone 7 devices for 4 years after the first retail sale of the unit." iPhone 7 sold September, 2016 - September 2019 so eligibility will depend upon when exactly you bought your iPhone 7.