copay/public/views/includes/available-balance.html

<div>
  <span class="db text-bold">
    <span translate>Available Balance</span>:
    {{index.availableBalanceStr }}
  </span>
  <span class="text-gray" ng-show="index.lockedBalanceSat">
    {{index.lockedBalanceStr}}
    <span translate>locked by pending payments</span>
  </span>
</div>