连接，本该如此纯净 The Internet, As Pure As It Should Be

Absolutely not. GreenTea VPN enforces a strict zero-log policy. Here’s a detailed breakdown:

1. Step 1: Understand the zero-log commitment. GreenTea VPN is architected with a RAM-only server infrastructure from day one. All data vanishes upon power loss or reboot, leaving no trace. We never log your browsing history, visited websites, DNS queries, connection timestamps, or IP addresses — this is our solemn promise to every user.
2. Step 2: Independent third-party audits. We commission annual security audits by renowned firms like Cure53 to verify our zero-log claims. Audit reports are publicly available on our transparency page, ensuring accountability that anyone can verify.
3. Step 3: Open-source transparency. Our core client code is open-sourced on GitHub, allowing global security researchers to inspect our codebase anytime. Open-source means no hidden backdoors — community scrutiny is our strongest trust foundation.
4. Step 4: Anonymous payment options. For privacy maximalists, we support cryptocurrency payments (Bitcoin, Monero) combined with anonymous email registration, achieving full-chain anonymity from payment to usage.
5. Step 5: Legal protection in our privacy policy. Our privacy policy clearly outlines data handling practices in plain language, bound by strict privacy laws. We pledge never to sell, share, or disclose your personal information to any third party — this is a legal obligation enshrined in our terms of service.

Installation is incredibly simple with no technical background required. Follow these steps:

1. Step 1: Visit the official website and select your platform. Open the GreenTea VPN website — it automatically detects your operating system (Windows, Mac, iOS, Android, or Linux) and highlights the recommended version. You can also manually choose from the download page with detailed compatibility notes.
2. Step 2: Download and install. Click the download button and the installer will save to your device. Windows users double-click the installer and follow the wizard; Mac users drag the app into the Applications folder; iOS and Android users are redirected to the official App Store or Google Play for the verified app.
3. Step 3: Create an account or log in. Open the app after installation. You can register with an email or choose anonymous registration. The process requires minimal information and takes under 30 seconds. Existing users simply log in with their credentials.
4. Step 4: Choose a plan or start your free trial. Upon first login, the system guides you through plan selection. New users enjoy a 7-day free trial with full feature access — no upfront payment required. After the trial, choose monthly, annual, or 2-year billing.
5. Step 5: One-click connect and customize. After logging in, tap the “One-Click Connect” button — the app automatically selects the optimal node and establishes an encrypted connection. Advanced users can enter settings to manually choose specific country servers, enable split tunneling, or configure auto-connect rules.

Yes. GreenTea VPN uses advanced obfuscation technology optimized for complex network environments. Details below:

1. Step 1: Understand how obfuscation works. GreenTea VPN includes multiple obfuscated transport protocols that disguise VPN traffic as regular HTTPS web browsing, effectively evading Deep Packet Inspection (DPI) systems. This ensures stable connections even in regions with strict network censorship.
2. Step 2: Choose the appropriate obfuscation mode. In the app settings, we offer “Auto,” “Standard Obfuscation,” and “Deep Obfuscation” modes. For complex network environments, we recommend “Deep Obfuscation,” which disguises traffic more thoroughly — with a slight latency trade-off for maximum stability.
3. Step 3: Use smart node recommendations. The GreenTea VPN client automatically recommends the most stable and fastest nodes based on your real-time network conditions. These recommended nodes are specifically optimized for regional restrictions, with significantly higher connection success rates.
4. Step 4: Keep your client updated. Network environments evolve constantly, and our technical team continuously develops new obfuscation algorithms. Always keep your GreenTea VPN client updated to the latest version for cutting-edge circumvention capabilities and security patches.
5. Step 5: Utilize backup connection options. If a node occasionally has connection difficulties, the built-in “Quick Switch” feature can try alternative nodes within seconds. We recommend saving 2-3 frequently used nodes as backups to handle unexpected situations and ensure uninterrupted connectivity.

We offer multiple payment methods with a transparent refund process. Details below:

1. Step 1: Explore all available payment channels. GreenTea VPN supports international credit cards (Visa, Mastercard, American Express), PayPal, Alipay, WeChat Pay, and various cryptocurrencies (BTC, XMR, ETH). Whether you prefer traditional payments or privacy-focused crypto, we’ve got you covered.
2. Step 2: Select a payment method and complete subscription. After choosing your plan on the pricing page, the checkout page displays all available payment options. Select your preferred method and follow the prompts — all transactions use bank-grade encryption to keep your payment information secure.
3. Step 3: Understand the 30-day money-back guarantee. GreenTea VPN offers a 30-day no-questions-asked full refund on all plans. If you’re unsatisfied within 30 days of purchase for any reason, you can request a full refund — no explanation needed. This reflects our absolute confidence in our product quality.
4. Step 4: How to initiate a refund request. To request a refund, submit a ticket via the “Contact Support” page on our website, send an email to our support address, or use the 24/7 live chat. Provide your registered email and order number — our support team responds within 2 hours.
5. Step 5: Confirm refund processing times. Once approved, funds are returned to your original payment method. Credit card refunds typically arrive within 3-7 business days, PayPal refunds are instant, and crypto refunds complete on-chain within 24 hours. We track the entire process and notify you via email.

The number of devices depends on your chosen plan. Here’s the detailed device policy for each plan:

1. Step 1: Understand monthly plan device limits. Monthly plan users can connect up to 5 devices simultaneously. These can be any combination — for example, 2 phones, 1 laptop, 1 tablet, and 1 desktop — flexibly meeting daily personal needs.
2. Step 2: Explore annual plan expanded benefits. The annual plan increases simultaneous devices to 10 and includes a dedicated static IP address. This covers core devices for your entire family — phones, computers, smart TVs — protecting the whole household with one account.
3. Step 3: Discover the 2-year plan’s unlimited device privilege. Our most generous 2-year plan supports unlimited simultaneous devices. No matter how many smart devices you own — from phones and computers to gaming consoles and smart home gadgets — all get comprehensive protection under one account.
4. Step 4: Manage connected devices. In the “Device Management” section of the GreenTea VPN app or web dashboard, you can view all currently connected devices anytime. If you spot an unfamiliar device or need to free up a slot, you can remove any device with one click, ensuring account security and fair slot allocation.
5. Step 5: Upgrade your plan to expand device capacity. If your current plan’s device limit isn’t enough, you can upgrade to a higher tier anytime in account settings. Upgrade costs are prorated based on remaining days — you only pay the difference to immediately enjoy more simultaneous device connections.

GreenTea VPN employs a multi-layered security architecture for comprehensive data protection. Technical details below:

1. Step 1: AES-256-GCM encryption — bank-grade protection. We use AES-256-GCM as the default encryption algorithm, widely recognized as the strongest symmetric encryption standard, adopted by global banks, governments, and military institutions. A 256-bit key means even the world’s fastest supercomputer would need billions of years to brute-force it — your data is virtually impenetrable.
2. Step 2: 4096-bit RSA key exchange secures the handshake. During the initial VPN connection handshake, we use 4096-bit RSA asymmetric encryption for key exchange. This ensures the session key negotiated between your device and the server cannot be intercepted or tampered with by man-in-the-middle attacks, laying a secure foundation for the entire encrypted session.
3. Step 3: ChaCha20 backup encryption for flexibility. For mobile devices or processors without AES hardware acceleration, GreenTea VPN automatically switches to ChaCha20 encryption. ChaCha20 is a lightweight, high-performance cipher that runs efficiently on mobile chips while maintaining security strength equivalent to AES-256.
4. Step 4: SHA-512 hash verification ensures data integrity. Every transmitted data packet includes a SHA-512 hash checksum. The receiving end verifies this hash to ensure data hasn’t been tampered with during transmission. Any single-bit alteration causes a hash mismatch, and the system immediately discards the packet and requests retransmission, eliminating data corruption.
5. Step 5: DNS leak protection and WebRTC blocking. GreenTea VPN takes over all DNS queries at the system level, ensuring all domain resolution requests are sent through the encrypted tunnel to our private DNS servers — never leaked to your ISP. We also automatically block WebRTC protocol leaks that could expose your real IP, providing an additional protection layer at the browser level.