You can stake TRX inside Klever Wallet to earn rewards paid in KLV token. When you stake TRX, your TRX will be locked for 3 days. You cannot unstake or transfer the staked TRX during the 3 days period. After 3 days, you can unstake your TRX any time.
You can unstake TRX inside Klever Wallet as follows:
Tap on TRX token from your Portfolio screen, then switch to the desired Account.
Inside the TRX Account, tap on STAKING icon.
Inside staking screen, tap on Withdraw button at the bottom of the screen.
Tap on Confirm button to approve the unstaking process.
At the end, sign the transaction by providing your PIN code or using your biometrics.