Earning $4 from Binance without investment requires taking advantage of promotions, giveaways, or reward programs. Here are some strategies:

### 1. **Binance Learn & Earn**

- Binance often offers a **Learn & Earn program**, where you can watch educational videos or take quizzes about blockchain and cryptocurrencies to earn free crypto.

- Check the [Binance Learn & Earn page](https://www.binance.com) for current opportunities.

### 2. **Referral Bonuses**

- Refer friends to Binance. When they sign up and trade, you can earn a commission or bonus.

- Share your referral link with your friends or on social media.

### 3. **Binance Quests**

- Binance sometimes offers tasks or quests where you complete simple activities (like trading or exploring features) to earn rewards.

- Keep an eye on Binance's "Task Center" in your account.

### 4. **Airdrops**

- Participate in Binance-hosted or partner airdrops. These are often free and only require completing simple actions like signing up for a newsletter.

### 5. **Staking Free Trials**

- Binance occasionally provides free trial staking vouchers that let you earn rewards without committing your own funds.

### 6. **Daily Rewards (P2P or Giveaways)**

- Join Binance promotions like **P2P trading challenges** or other giveaways announced on the platform.

Make sure to follow Binance's official social media channels or check the "Promotions" section on the app/website for updates. Always verify offers to avoid scams.