If you're running into any issues with your Backbone One for iPhone, you'll want to always make sure that both your iPhone's operating system and the Backbone App are up to date. To do so, please follow the instructions from Apple on keeping your operating system and apps up to date:
Checking and updating your iOS
Checking and updating your iPhone apps, including the Backbone App
Still having issues? Check out this article on troubleshooting your Backbone One for iPhone.