For Iranian Users: Install sing-box and Import Your Univista…
Updated
Before you start
Get your subscription URL from the dashboard or digital card; install a sing-box capable client from a trusted source (mature builds exist for iOS / Android / Windows / macOS; names vary by version). Keep the OS reasonably up to date, allow the VPN configuration permission, and make sure the device time and time zone are correct to avoid TLS / certificate errors. In Iran's filtered environment, prefer a node that supports VLESS + Reality so your traffic looks like ordinary HTTPS.
Solution: what you need
You need: a valid Univista subscription; a network that can reach the subscription server (for the first client download); and basic familiarity with clipboard or QR import. Univista offers a free quota and a pay-as-you-go data pack on the plans page; avoid third-party top-ups.
Step-by-step
- Copy the subscription URL from the dashboard (typically
https://univista.me/sub?token=…). - Open the sing-box client, choose “import from URL” or scan the QR code, and paste the URL.
- After import, tap “Update subscription” and wait for the node list to refresh.
- Pick a low-latency, healthy node (prefer an exit region close to Iran) and turn the connection on; if you use TUN mode, disable other conflicting VPNs.
- Open a browser or your target app to verify; if it fails, switch nodes, check DNS, or restart the network.
- For richer step-by-step help see the matching platform panel in the Help center.
Troubleshooting
- Subscription update fails: check for a truncated URL or extra spaces; copy again from the dashboard.
- Connected but some sites break: review routing rules; try global mode to isolate the issue.
- TLS / certificate errors: verify system time and time zone; disable conflicting security software.
- For protocol background read What is VLESS + Reality.
Follow local laws and the service terms; this is a technical tutorial and you are responsible for safe, lawful use.
FAQ
- What is the difference between sing-box and Clash?
- Both are clients / rule engines. sing-box has good VLESS+Reality compatibility and a consistent cross-platform experience; choose based on your platform and habits.
- No nodes after importing the subscription?
- Tap “Update subscription” and wait; if still empty, check the URL is complete and the network can reach the subscription server.
- How does the free quota work?
- You get a free data quota after registering; buy a data pack when you exceed it. Quota and pricing are on the plans page.
- Is VLESS + Reality guaranteed unblockable?
- No solution can guarantee that. Reality makes the handshake look like a real website to lower detection, but results still depend on node quality and operations.
Related guides
How to Use Telegram Reliably in Iran (VLESS+Reality / sing-box)
What Is VLESS + Reality? The Anti-Censorship Protocol Explained (2026)
Android: Full Univista Setup Guide
VPN for Chrome: The Right Way
VPN Cat and free mobile VPNs: limits for Telegram and ChatGPT
VPN Chrome Extension vs a Real VPN: What's the Difference?
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View plansThis article is for technical education only. Comply with local laws when using network tools. Univista is not liable for how you use the service.