iOS - (mobile browser)
To connect the Trust wallet to a browser on your mobile phone use the 'WalletConnect' option.
In a mobile browser, go to https://app.1inch.io/;
click on 'connect wallet', accept the Terms of Service, select WalletConnect and click on the Trust wallet icon;
you will be thrown to the Trust wallet app, confirm connection there;
return to the browser, your wallet will be connected.
How to Interact with 1inch from your mobile browser and confirm transactions in your Trust wallet.
Android
Open your Trust Wallet;
click on the browser icon at the bottom;
click the header and type app.1inch.io in the URL field;
on https://app.1inch.io/, click 'connect wallet', accept the Terms of Service and select the first connection option, 'trust'.
Use the Trust Wallet internal browser for interaction with 1inch.
WalletConnect to a desktop browser
To connect the Trust Wallet app on your mobile phone to a browser on your desktop, use the ‘WalletConnect’ option. Do not use this option to connect to a browser on your mobile phone.
In a desktop browser, go to https://app.1inch.io/;
click on 'connect wallet', and select "Trust Wallet. A QR code will be displayed on the screen;
on your mobile phone, open Trust Wallet;
open the scanner within your Trust Wallet app
point your phone camera to the QR code.
Interact with 1inch from your desktop browser and confirm transactions on your phone.