Error 628 often points to VPN tunnel or PPP negotiation failures—reboot, recheck credentials, try another protocol, or reinstall the dialer profile. See the Chinese article for carrier-specific notes.

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Different protocols trade off speed, stealth, and compatibility. Use the table on the Chinese page to pick one for your network; “compat password” behaviour is explained there.

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We focus on connection quality over quantity. Some providers list hundreds of servers, but only a few work. It wastes your time and increases the chance of blocking. Our nodes use premium Chinese transit (like CN2), with high cost but excellent stability in mainland China. We display real-time online user counts so you can choose better servers. If one feels slow, just try another. Compared to free services, we provide a long-term, ad-free, and faster VPN experience — so you save time and get more reliable access.

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公司简介与发展历程

本服务最早起步于 2010 年，最初由一批技术爱好者发起，致力于为用户提供稳定、高速的网络加速与匿名访问服务。

公司最初注册于美国，部分运营团队位于中国大陆。随着业务的逐步拓展，我们持续优化服务质量、增加服务器节点、拓展访问协议类型，积累了丰富的技术与服务经验。

在 2025 年，我们正式完成公司主体迁移，注册地由美国变更为 新加坡，并启动全面国际化战略。新加坡作为亚洲重要的网络枢纽，将进一步提升我们服务全球用户的能力。我们目前服务对象已从最初以中国大陆为主，扩展至全球多个国家和地区的用户。

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域名沿革

自创立以来，由于 GFW 不断封锁,我们经历了多个阶段性域名的更新与变更，以下为部分历史域名记录（截至 2016 年 9 月，不完全统计）：

2010年

5uf.net  网站档案链接

2011年

5uf.us   档案链接

5uf.me  档案链接

5uf.mobi    档案链接

my5uf.com  档案链接

my5uf.net   档案链接

2012年

my5uf.me   档案链接

my5uf.mobi  档案链接

2013年

we5uf.com   档案链接

we5uf.net    档案链接

we5uf.org    档案链接

we5uf.mobi    档案链接

2014年

5uf1.com   档案链接

5uf2.com   档案链接

2015年

5uf3.com   档案链接

5uf.cc   档案链接

5uf7.com   档案链接

2016年

8.20   5uf8.com

10.17 5uf9.com   公告地址

11.24 5uf10.com 公告地址  

目前主要域名:

5ufvpn.com

5uf5.com

wyfvpn.com

技术与服务演进

从最初几台部署在美国的数据中心的服务器起步，我们不断优化节点质量。目前拥有超过十台稳定运行的高质量服务器，并坚持精细优化而非数量堆砌的原则，力求为每一位用户提供快速、稳定、安全的连接体验。

我们支持多种主流协议，包括但不限于：

• PPTP、L2TP/IPSec（早期）

• OpenVPN、SSTP、IKEv2

• 智能 Web 代理（Smart Proxy）

此外，我们也持续开发自有客户端与平台工具：

• Windows 客户端

• iOS 客户端

• 独立开发的 iOS 越狱插件 AutoVPN

• 曾推出的“无忧府浏览器”（已停运）

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走向全球 · 服务更多用户

2025年起，我们进入全新发展阶段：

• 注册地迁往 新加坡

• 服务对象由 中国大陆用户 拓展至 全球用户

• 网络布局更具全球视野，兼顾隐私、安全与速度

感谢大家多年信任与支持，未来我们将继续以用户体验为核心，服务全球自由访问需求。

如需了解最新动态，请关注我们的[新闻公告页面] http://www.5ufvpn.com/news/。

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This article covers manual routing or adapter steps specific to Windows 10. Follow the numbered steps on the Chinese page; prefer the official app when possible.

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On very old PPTP setups, encryption mismatches can cause random disconnects. The Chinese article describes how to adjust encryption or migrate to a modern protocol.

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When email or chat is not enough, we may use secure remote assistance. Please follow the Chinese instructions to prepare your device and privacy settings before a session.

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Automatic configuration imports server settings into the app or system profile so you do not enter nodes manually. The Chinese tutorial covers Mac as well as iPhone/iPad flows with screenshots.

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Yes. A VPN does not replace your phone's internet connection. It works as an encrypted tunnel built on top of your existing network connection.

That means:

• If you are using mobile data, the VPN works through your mobile data connection.
• If you are using Wi-Fi, the VPN works through Wi-Fi.
• If your phone has no internet access at all, the VPN cannot connect either.

A VPN encrypts and routes your traffic. It does not replace your carrier connection, and it cannot give you internet access when the device itself is offline.

If you are a new user, we recommend using the latest 5UF VPN app for a simpler and more stable experience.

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Some Windows 7 editions omit the Telnet client. Enable it under “Turn Windows features on or off”, or use alternative tests shown in the Chinese guide (e.g. PowerShell or third-party tools).

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This article describes the legacy 5UF browser-related offering. For current products please use the main site or the 5UF VPN app. Full details remain on the Chinese page.

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Sign in on our website, download the mobile profile, open it on your iOS device, and install the VPN payload when prompted. The Chinese article includes step-by-step illustrations in Safari and Settings.

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5UF VPN Terms of Service & Privacy Policy

Version: June 18, 2025

Applies to all products and services provided by 5UF VPN, including users who subscribe via App Store, Google Play, Alipay, WeChat Pay, or credit card.

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1. Our Commitment: Privacy First, Minimal Data Collection

5UF VPN is committed to providing a no-log, no-tracking, and interference-free internet experience.

We adhere to the common industry practices of VPN services:

• No logging of browsing history, DNS queries, connection contents, or communication data

• No behavior profiling or data analysis

• No sale, sharing, or misuse of user data

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2. What We Collect (Minimal Required Data)

We only collect two essential pieces of information at registration:

• Username (for account identification)

• Email address (for service notifications and password recovery)

We do not actively collect or store any personally identifiable information such as real name, physical address, or phone number.

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3. What We Record During Usage

We do not record:

• Websites you visit

• DNS queries

• Content of traffic or packet data

We only record aggregate bandwidth usage per account to help manage system resources.

Regarding IP Addresses:

• Older protocols (e.g., PPTP, IKEv2, and outdated configurations) may temporarily log your IP for abuse prevention. These logs are retained for no more than 30 days and then permanently deleted.

• For newer protocols (e.g., Trojan, Hysteria), used in Android App 3.0+ and iOS App 7.0+, we do not log IP addresses at all, and it is technically impossible to reconstruct the connection.

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4. Device & Bandwidth Usage Policy

• All plans support unlimited speed and cross-platform usage (mobile, tablet, desktop)

• Daily data limit is 10GB, automatically reset every day

• We limit simultaneous online devices, not total device count

• Each additional simultaneous device increases the monthly price by 10%

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5. Payment Methods & Processing

Third-Party Payments (Stripe, PayPal, Paddle)

• All credit card transactions are processed via PCI-DSS compliant platforms

• We do not access, log, or store any payment information such as credit card number, CVV, or billing address

Alipay & WeChat Pay

• Integrated via third-party payment aggregators (e.g., Ping++ and similar)

• We only receive confirmation of success/failure; we do not know your Alipay or WeChat account

• Aggregators may retain limited transaction records, but 5UF VPN does not store or access them

Apple App Store / Google Play

• All purchases, subscriptions, and refunds are managed by Apple/Google directly

• We only receive metadata about subscription status or duration

• Subscriptions auto-renew unless cancelled at least 24 hours before the end of the billing period

• Renewal charges are processed within 24 hours before the next billing cycle begins

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6. Auto-Renewal Policy (App Store Subscriptions)

Applies to 5UF “Premium Membership” purchased via App Store:

• Monthly billing cycle (approx. 30 days, not calendar month)

• Can be cancelled at any time in iOS Settings

• After cancellation, service continues until end of current cycle

• If cancelled during the trial period, membership ends immediately

• Renewal charges are deducted from your iTunes balance

• Subscription benefits sync across all your devices

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7. Refund Policy

App Store / Google Play Subscriptions

• For refunds, contact Apple or Google support directly

• We cannot initiate refunds for in-app purchases

• Once a refund is approved, the associated VPN account will be immediately disabled

Credit Card / Aggregator Payments

• Credit card payments are eligible for a 7-day no-questions-asked refund

• Refunds beyond 7 days require customer service review and approval

• If a chargeback or payment dispute is filed with your bank, the account will be permanently banned

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8. Legal Cooperation Policy

We comply with the law, but only within strict limits:

• We only cooperate with formal court-issued orders, not administrative or police requests

• We will not cooperate with authorities from: China, Iran, Russia, North Korea

• Even when cooperating, the only data we can provide is email, username, and registration time

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9. Compliance with Singapore PDPA

As a company registered in Singapore, we fully comply with the Personal Data Protection Act (PDPA):

• We collect only the minimal data necessary for service delivery

• Users may request access, correction, or deletion of their data

• All data is stored in data centers that comply with PDPA standards

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10. Compliance with EU GDPR

We are fully compliant with the General Data Protection Regulation (GDPR):

• All user data is encrypted in storage

• We do not use automated profiling or AI-based decision-making

• Users can request account/data deletion at any time

• We do not sell, transfer, or share user data with any third party

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11. Industry Standards & Legal Disclaimer

• We use industry-standard encryption protocols such as AES-256 and TLS 1.3

• We do not encourage or condone any illegal usage of the service

• Users are responsible for complying with local laws

• We are not liable for any losses arising from user misconduct or device security vulnerabilities

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12. Contact Us

Customer Support Email: [email protected]

Official Website: https://www.5ufvpn.com

Please contact us for requests related to data access, correction, deletion, or refunds.

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5UF VPN’s core values: No Logs, No Tracking, No Unlawful Cooperation.

We exist to protect your freedom, privacy, and digital autonomy.

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This guide walks through manual L2TP configuration on Apple mobile devices. L2TP is a legacy option—when possible we recommend the official 5UF app. See the Chinese article for exact field values and screenshots.

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This article combines several older billing FAQs so you can quickly understand renewal, upgrades, traffic reset, and what “unlimited” really means.

1. How does billing work?

5UF VPN plans are billed by plan period. After purchase, your current billing cycle starts immediately. If you renew, your service time is extended.

2. Why did renewal not restore my service immediately?

If you only renew, the system usually extends your membership time but does not reset the traffic or quota already used in the current billing cycle.

3. What is the difference between renewal and upgrade?

• Renewal: extends the current plan period and does not reset the current quota.
• Upgrade: takes effect immediately, recalculates the billing cycle, and resets the current traffic or quota.

4. Will I lose the value of my current plan when upgrading?

No. The system converts the remaining value of your current plan according to the upgrade rules.

5. Why can an “unlimited” plan still have restrictions?

“Unlimited” means normal personal use is not quickly blocked by total usage, but the platform still applies a fair usage policy to prevent account sharing, resale, or long-term abnormal bandwidth usage from affecting other users.

6. What if I hit a limit by mistake?

If you are a normal personal user and a short burst of traffic triggers a restriction, contact support for review.

For the most stable long-term use, we still recommend the latest 5UF VPN app and suggest avoiding old clients or old protocols whenever possible.

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Connection failures on iPhone or other phones are usually caused by network restrictions, wrong protocol settings, outdated software, or temporary server issues. Follow the troubleshooting section on the Chinese page step by step, or contact support with screenshots.

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Slow VPN speed may come from Wi-Fi congestion, ISP shaping, far-away nodes, or local software conflicts. Use the optimisation checklist on the Chinese page.

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Many sites offer free proxies or “free VPN” tools. Paid services like 5UF fund real servers, support, security updates, and long-term reliability. This article explains our value in more detail—please refer to the Chinese page for the full text.

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