To obtain a free VPN on your iPhone 6,consider the following organized approach:

1. NordVPN: Check if NordVPN offers a free version or a trial period. NordVPN is a popular choice for its user-friendly interface and features. If it doesn't, explore paid services like EvenK现 or Cypherlink.

2. Browser Extensions: Install a browser extension like uBlock Origin or AdBlock Plus to block trackers and ads. This option is quick and doesn't require Wi-Fi, ideal for users who prefer simplicity.

3. Wi-Fi VPN: Use Wi-Fi as a VPN if you find it convenient. It offers a fast and secure way to mask your internet connection without additional software.

4. Paid VPN Services: For more security and features, consider paid services like NordVPN, EvenK现, or Cypherlink. These services often offer unlimited streams and global coverage.

5. Evaluate Security and Features: Research reputable VPN services based on their features, such as encryption, limits on data transfer, and ad-blocking.

6. Cost Consideration: Use a free trial if possible to assess the service's value before committing to a paid plan.

7. Location and Privacy: Ensure the VPN service provides global coverage and doesn't target specific countries to protect your privacy.

By evaluating these options, you can choose the best VPN service that meets your needs, whether it's for browsing, security, or convenience.