::
Hello, thank you for reaching out.
Please correct me if I’m wrong but you have purchased a new device and setting it up for the first time. Please note that you are only able to do so on PC (all setups and firmware update require a PC, as its the safest and most secure method to perform firmware related processes), after completing the setup (Pin code > generate 24 words > genuine check) You will install apps and add accounts. After that, you will be able to use your device with your mobile phone.
Download Ledger Live on desktop: Windows 8.1+, macOS 10.14+, Linux. 64-bits desktop computers excluding ARM processors. Use a USB cable to connect your device: https://www.ledger.com/ledger-live/download
I hope this solves your issue
I remain available shall you have any further questions.