Apps work but the browser doesn't

If native apps (Instagram, WhatsApp, etc.) work fine on your Eflexsim cellular but the browser (Safari, Chrome) won't load any website, the cause is almost always one of three things: a captive-portal prompt your browser is silently waiting for, a DNS issue specific to the browser's handling, or a certificate trust problem on the partner network. Captive portal is by far the most common; the fix is usually to navigate to a non-HTTPS site (like example.com) which triggers the portal prompt.

Below: each cause in detail, the fix, and what to do if none of them apply.

Why apps work but the browser doesn't

This pattern is more specific than "no internet" because most apps use a small set of network operations (HTTP/HTTPS to specific servers) while browsers use many more network features. When a layer specific to browsers breaks, apps keep working through their fixed servers but the browser fails on every site.

The three usual suspects:

1. Captive portal not triggering. Some networks (especially hotel Wi-Fi, some airport networks, and rarely some cellular carriers) require a one-time login or terms acceptance via a captive portal. Browsers usually trigger the portal automatically, but if the portal redirect breaks, you get "no internet" in the browser even though direct app traffic works.

2. DNS issue specific to browser handling. Browsers often use DNS-over-HTTPS (DoH) by default, routing DNS through a specific provider's HTTPS endpoint. If that endpoint can't be reached on the partner network, the browser fails while apps using system DNS keep working.

3. Certificate trust issue. Less common: the partner network is doing some kind of HTTPS interception or you've installed a corporate certificate that conflicts with browser security checks.

Fix 1: Trigger the captive portal manually

If a captive portal is the issue, you need to force the browser to load a non-HTTPS site to trigger the redirect.

Try this:

1. Open Safari or Chrome.
2. In the address bar type: http://example.com (NOT https — the http is important).
3. Press Go.

If a captive portal exists, it will redirect you to the portal page. Accept terms, log in, or just dismiss the page if it's already cleared. Browser traffic should now work.

Other useful test URLs (all non-HTTPS):

• http://neverssl.com
• http://detectportal.firefox.com
• http://captive.apple.com

These exist specifically to be plain HTTP and trigger captive portals.

Fix 2: Disable browser DNS-over-HTTPS

If the browser is using DoH and the partner network blocks or doesn't route the DoH endpoint, disabling DoH temporarily falls back to system DNS (which usually works).

Chrome (desktop and mobile):

1. Open Chrome settings.
2. Privacy and security → Security.
3. Find "Use secure DNS" and toggle off.
4. Restart Chrome.

Safari:

Safari doesn't expose DoH controls directly; iOS handles DNS at the OS level. Toggling Settings → General → VPN & Device Management → check for any DNS profile installed and remove it.

Firefox:

1. Settings → Privacy & Security → DNS over HTTPS.
2. Select Off temporarily.

After disabling, try loading a website. If it works, DoH was the problem. You can re-enable DoH with a different provider (Cloudflare, NextDNS) once you're back on Wi-Fi.

Fix 3: Clear browser cache and cookies

Stale browser state sometimes causes weird "won't load anything" behavior. Clearing it removes that variable.

Safari (iPhone):

1. Settings → Safari → Clear History and Website Data.

Chrome (mobile or desktop):

1. Settings → Privacy and security → Clear browsing data → All time.
2. Check Cookies, Cached images.
3. Click Clear data.

This is a sledgehammer approach but rules out a stale-cache issue.

Fix 4: Try a different browser

If Safari fails, try Chrome. If Chrome fails, try Firefox or Edge. If only one browser fails, it's a browser-side issue (likely cache or a setting). If all browsers fail, the issue is below the browser layer (DNS, captive portal, or partner network).

Fix 5: Restart the phone

As with most network issues, a full restart clears the most categories of stuck state. Power off, wait 30 seconds, power back on, and test again.

What this isn't

If apps ALSO don't work, this isn't the right troubleshooting article. See data is on but apps won't connect instead.

If the browser is slow but does load, see why are my eSIM speeds slow.

If specific apps fail (not browser-wide), see app-specific troubleshooting. For example, iMessage and FaceTime have known issues on travel eSIMs documented in iMessage and FaceTime not working with your eSIM.

Country-specific browser blocks

A few countries block specific sites at the network level regardless of carrier:

• China: blocks Google, Facebook, Instagram, YouTube, WhatsApp, many news sites, and most VPNs. Eflexsim plans for China have to work within these rules.
• Iran, North Korea: broad blocks on Western services.
• Russia: rotating blocks on various sites.
• Turkey, UAE: occasional blocks on specific services or VoIP apps.

If a specific blocked site fails but others work, that's the country's policy, not a phone issue. A VPN to your home country usually bypasses, though VPN legality varies by country.

For broader app failures, see data is on but apps won't connect. For slow speeds, see why are my eSIM speeds slow. For total signal loss, see my eSIM has no signal.