How to setup Testnet wallet

Tonkeeper

Go to the settings menu, tap the logo at the bottom of the screen five times, then switch Dev Mode to “ON”

Go back to the main screen, select “Add Wallet”, and then choose “Testnet Account” to add a testnet wallet. You'll need to re-enter your seed phrase.

MyTonWallet

Go to the settings menu, tap the logo at the bottom of the screen five times, then switch Network to “Testnet”. You'll need to re-enter your seed phrase or create a new wallet.

Tonhub

Go to the “More” menu, tap the logo at the bottom of the screen five times, then switch Network to “Testnet”