- Technology > Network report
- All traffic > Source/Medium report
- Site Content > Landing Page report
- Mobile > Devices report
With this (Mobile > Devices report) report, you can find out how many users you acquired on one type of device convert on that same type of device, how many convert on a different type of device, and how many don’t convert at all.
Learn more here: https://support.google.com/analytics/answer/3123672