Hosting & Performance
Website Works on Wi-Fi but Not Mobile Data
A site loads from the office or home connection but fails from a phone using cellular data. Resolver caches, IPv6 records, firewall rules, CDN routing or a local cache can produce network-specific behaviour.
website works on Wi-Fi but not mobile data can be frustrating because several causes produce the same visible symptom. A site loads from the office or home connection but fails from a phone using cellular data.
Domain, DNS, hosting, TLS and email are separate systems that meet at public records. A change can look complete from one network while caches or an overlooked record still direct other visitors elsewhere.
What the symptom tells you
Resolver caches, IPv6 records, firewall rules, CDN routing or a local cache can produce network-specific behaviour.
The useful question is not “which tool should I install?” but “where does the first confirmed failure occur?” Keep the original state available long enough to answer that question.
Checks to make in order
- Record the authoritative nameservers and current DNS records before changing them.
- Check the response from more than one network and resolver, including the exact hostname involved.
- Keep the previous service available until web, email, TLS and scheduled tasks are verified.
- Issue-specific action: Compare DNS answers and HTTP status from both networks, check A and AAAA records and review security logs for blocked address ranges.
How to verify the result
Repeat the original journey using a fresh session and a representative device or account. Check the expected result, nearby functions and any logs or messages that should accompany success. Record what changed so a later incident does not require the same discovery work.
Before closing the task, confirm who owns the system, where the relevant configuration is documented and what monitoring would reveal a recurrence. That small handover step turns a one-time repair into a more dependable operating practice.
A shortcut to avoid
Do not keep restarting the web server when only one network path fails.
When specialist help is sensible
Ask the host or DNS provider for help when routing or IPv6 configuration differs.
Related questions
- Mixed Content After Moving a Website to HTTPS
- Hosting Storage or Inode Limit Reached: Symptoms and Recovery
For authoritative background, read MDN domain-name guide. If you would rather have someone investigate the evidence with you, review SoftNSM’s hosting and migration support or send the team the symptoms and affected URL.