Access already-existing wallets by entering your 12-word backup phrase into the "Pair/Restore Existing Wallet" feature. You can do this in two ways:
Pairing an existing wallet with a new wallet
1. Download the latest version of Jaxx Liberty
2. Read and Agree to "Terms of Service"
3. Select language
4. Select "Restore Interface"
5. Select "Enter Backup Phrase" or "Scan Backup Phrase QR code"
6. Select "Restore Wallet" after you entered the backup phrase
Pairing from an existing install
1. Select the "Menu" icon from the upper right corner of the screen
2. Under "Tools", select "Pair/Restore Existing Wallet"
3. Enter security password If you have it enabled
4. Select "Enter Backup Phrase" or scan a QR code by selecting the "camera" icon (available for mobile devices only)