is unlock transferrable to a new phone?

[Sam Sharma]

If so, are there instructions somewhere?

[Brenda Ketchel]

I don't know about specific to this program, but with most apps (including ones you buy) you just log in to google play store on the new device with the same account where you purchased the app, select your new device from the drop down by clicking where it says app is compatible with your devices (or some of your devices). That's usually under where it says things like Contains ads or Offers in-app purchases, whatever is relevant to the app. Follow the prompts, after you choose your device, to install.