This iOS VPN guide starts with getting a client and then covers subscription import, system authorization, node connections, and verification. During a first setup, the confusing part is usually not where to tap, but how the client, subscription link, node, and protocol relate to one another. Understand those pieces first, then follow the steps in order so you can tell whether a problem is in the app, configuration, or route.
The client is the connection tool installed on your iPhone; the subscription link is a configuration endpoint generated by the service; the node is the specific connection exit; and Shadowsocks, VMess, Trojan, VLESS, Hysteria2, and TUIC are protocols that both the client and server must support. A subscription service is not the same as a client: after obtaining the link, you still need a compatible app to read its configuration.
Before you start: understand clients, subscriptions, and routes
Whether a subscription can be imported into a particular client depends on the configuration formats and protocols that client supports. A service page saying “iOS supported” usually means that a compatible option exists; it does not mean every network tool can read the subscription. Before getting the app, check the service’s guide or client instructions to confirm that the app name, download source, and import method match.
- ✅ You have a subscription link that is still valid, and you confirmed that nothing was missing when you copied it.
- ✅ You confirmed that the subscription’s protocols are supported by the target iOS client.
- ✅ You have an Apple Account environment that can access the App Store normally, and you verified the app publisher.
- ✅ You closed other connection tools using the system VPN channel to prevent configurations from switching unexpectedly.
- ❌ Do not share the subscription link in public chats, forums, or support screenshots; it usually contains access credentials.
- ❌ Do not get the client from unknown configuration profiles, enterprise certificate pages, or mirrored installation packages.
Terms such as “direct,” “relay,” or “IEPL” in a route name describe how data travels between the local network and an overseas exit, not the client protocol. A direct route generally connects the local network straight to an overseas server; a relay route first reaches an intermediate entry point before continuing to the exit; IEPL refers to an enterprise-grade international private-line transport service. These routes can carry different protocols, but they do not replace the protocol’s own authentication and encryption.
Get an iOS client: check compatibility before installing
Use a client explicitly listed by the subscription service whenever possible. Open the service’s download page or guide, find the iOS section, note the app name and developer, and then search the App Store. App Store results may differ by region; if you cannot find the app, return to the service instructions to check the requirements instead of substituting an app with a similar name.
After installation, the client will usually show local profiles, subscriptions, or a server list on first launch. An empty list is normal because the app has not received any node information yet. Do not start by entering a server address manually in system settings; subscription-based clients generally create the required configuration automatically after import.
- Check the subscription service’s download guide for the recommended client and supported protocols.
- In the App Store, verify the app name, icon, developer, and description—not just its search ranking.
- Install and open the app, then look for options such as “Subscriptions,” “Import from URL,” or “Import from Clipboard.”
- Do not connect to an empty profile or enable unknown public node lists.
Clients differ mainly in protocol coverage, rule engines, subscription updates, and debugging tools. Some handle only specific protocols, while others can read combined subscriptions; some support routing by domain, IP, or process, while others offer only a global connection. Menu names may differ slightly from this guide, but the objects remain the same: add a subscription, update the configuration, choose a node, and enable the connection.
| Protocol or route term | What it does | What to check during import | Common limitations |
|---|---|---|---|
| Shadowsocks | An encrypted proxy protocol; the configuration usually includes a server, port, encryption method, and credentials | Whether the client supports the encryption method provided by the subscription | The client implementation and server parameters must match |
| VMess / VLESS | Common in proxy configuration ecosystems; it can work with different transports and TLS settings | Whether the transport, TLS, server name, and path were read completely | Copying only the server address is not enough to restore the full configuration |
| Trojan | A TLS-based proxy protocol that depends on the correct certificate and server-name configuration | Whether the domain, port, TLS, and authentication details are complete | An incorrect system time, certificate, or domain match can cause the handshake to fail |
| Hysteria2 / TUIC | A transport approach based on UDP- and QUIC-related mechanisms | Whether the client version and server both support the protocol | Some networks restrict UDP, so connection behavior may change with the access network |
| Direct / Relay / IEPL | Describes the route’s transport path, not the client protocol | Choose according to the node name provided by the service | The name alone cannot predict actual performance on the current network |
Import a subscription: generate a node list from the complete link
After signing in to the subscription service, find “Copy subscription,” “One-click import,” or the entry for your client. If the page provides a client-specific link, use it first because the general subscription format may differ from the format your client supports. Return to the client immediately after copying; do not paste the link into Notes, a browser address bar, or another app that may sync its contents.
Clients usually support importing from a URL, reading the clipboard, or using the system share menu. Choose the method specified by the service guide, give the subscription an easy-to-recognize name, and update it. A successful import should produce a node list, not just an unexpandable link record.
- Copy the subscription entry that matches the iOS client from the service panel.
- Open subscription management in the client and choose import from a URL or clipboard.
- After pasting, check the beginning and end of the link and remove any accidentally included spaces or line breaks.
- Save the subscription and update it, then wait for the node names to appear in the local list.
- Choose a node from the list and leave other advanced parameters at the values supplied by the service.
If one-click import does nothing, the redirect protocol used by the webpage may not be registered with the current client. Use the manual copy method instead. If the app reports an unsupported format, do not keep pasting the same content; return to the download guide to confirm the client type, or check that you copied the subscription URL rather than the webpage or plan URL.
Allow the VPN configuration: understand the system permission prompt
The first time you start a connection, iOS displays a system permission prompt to add a VPN configuration. This prompt comes from the operating system and allows the client to establish a network tunnel through Network Extension. After confirming that the action comes from the client you just installed and verified, tap Allow and complete the device verification requested by the system.
After authorization, the client hands the connection profile over to the system. The connection button becomes active, and the corresponding profile appears under VPN in system settings. You can normally switch nodes inside the client without creating another system profile; a completely different client may add a separate profile.
If the permission prompt does not appear, first confirm that the app actually started a connection rather than merely selecting a node. Also check whether the device is managed by an organization or restricted by Screen Time or a configuration profile. Organization-managed devices may block new VPN configurations; the device administrator must handle that restriction, and reinstalling the app will not change the policy.
Verify the connection: do not rely only on the VPN indicator
A client showing “Connected” only means that the tunnel was established or the connection process is running. To confirm that cross-border access is working, check the exit address, the target website, and the DNS resolution path together. Record your network details before connecting, then connect to a node and open 35VPN’s network test page to see whether the exit changed as expected.
- ✅ The client shows Connected without repeated retries or ongoing handshake errors.
- ✅ The exit region shown by the network test matches the purpose of the selected node.
- ✅ Websites that should use the proxy load normally, including sign-in and page resources.
- ✅ Local services still use direct connections as expected in rule mode instead of being sent to an overseas exit.
- ✅ DNS test results match the current configuration, with no unexpected resolution path still in use.
- ❌ Do not use one webpage loading from cache as the only proof that the connection is working.
During testing, account for browser cache, existing connections, and app-level DNS. A page opened before connecting may continue using its original connection after you switch routes; close it and open it again. Some apps maintain persistent connections, so related requests may need to be restarted after a route change before you can observe the new exit.
A DNS leak occurs when application traffic goes through a proxy or tunnel while domain lookups still use an unexpected path. This may expose the domains being queried or cause a website to resolve to an unsuitable regional address. If the client offers “remote DNS,” “proxy DNS,” or rule-based DNS, configure it according to the service guide. Also check whether encrypted DNS, content filters, or other network extensions in the system conflict with the client.
Routing rules: choosing between global, rule-based, and direct modes
Global mode generally sends all traffic managed by the client through the current node and is useful for temporary troubleshooting: if rule mode fails but global mode works, the problem is often rule matching or DNS resolution. Global mode is not always suitable for daily use because local services may also be sent to an overseas exit, changing regional detection or creating unnecessary detours.
Rule mode uses domains, IP addresses, geographic data, or rule sets to decide between proxy and direct connections. It is better suited to everyday use but depends on rule quality and update status. A new domain may take the wrong path if the rules do not recognize it; one service may also use multiple resource domains, so adding a rule only for the main domain is incomplete.
Direct mode pauses proxy forwarding or helps verify the local network. If the client appears connected but ordinary websites also fail in direct mode, the cause may be Wi-Fi, the cellular network, DNS settings, or a system-level filter rather than the remote node. Change only one condition at a time during troubleshooting; otherwise, switching the protocol, node, DNS, and mode together makes it impossible to tell what actually fixed the problem.
Common troubleshooting: locate the problem layer by its symptoms
No nodes appear after importing the subscription
First check that you copied the subscription link rather than the panel page URL. If the link is complete, update the subscription manually and review the client error. An unsupported-format error usually means the client and subscription formats are incompatible; an authentication or expired-link error means you should return to the service panel and obtain a valid entry again. Do not split the configuration apart and guess at each field.
A node can be selected, but the connection fails immediately
This often results from an unsupported protocol, mismatched TLS parameters, an incorrect device clock, or UDP restrictions on the current network. Refresh the subscription first, confirm that the client is the version recommended by the service, and then try another node in the subscription. If Hysteria2 or TUIC fails on the current network, test another protocol provided by the service to determine whether the issue is related to the UDP path.
The client says Connected, but no pages will open
Disconnect first and confirm that the local network works on its own; reconnect and check the DNS settings and exit address. If other content filters, ad-blocking network extensions, or encrypted DNS profiles are installed, temporarily disable conflicting items and test again. When multiple network extensions are present, the interface may show one as enabled while another still handles the actual request path.
Only some apps cannot access the network
Temporarily switch from rule mode to global mode. If global mode restores access, the target domain, resource domain, or IP probably did not match the correct rule. In the client log, focus on whether the request was ultimately marked proxy, direct, or rejected. If the app uses UDP and the selected node or rules do not handle UDP correctly, websites may work while a specific app fails.
The connection drops after locking the screen or switching networks
iOS manages background execution and the network-extension lifecycle, while the client must also handle path changes between Wi-Fi and cellular networks. Check whether the app offers on-demand connection or automatic reconnection, and make sure those options fit your usage. If every network switch fails, update the subscription, rebuild the system VPN profile, and test another supported protocol. Force-quitting the client repeatedly may interfere with recovery.
Local websites become slower after connecting
Check whether global mode was enabled accidentally. Switch back to rule mode and confirm that local domains and frequently used services are marked for direct connection. If the rules are correct, also check whether DNS is resolving local domains to unsuitable addresses. Route types describe the transport path and cannot replace sensible routing; even with a relay or IEPL, sending local services through an overseas exit adds path length.
Once the setup is stable, keep the service’s original download guide and update the subscription from the client regularly. Node addresses, protocol parameters, and rules may be changed server-side; an old manually saved profile will not update itself. When switching clients, confirm the compatible format again instead of assuming that a local profile exported by the old app can be fully read by the new one.