Can Wi-Fi work while LTE internet is down?
Yes. Wi-Fi is the local connection to the router. The router still needs a working SIM, signal, APN and plan to reach the internet.
LTE routerLTE routerWi-FiAPN settingsSouth Africa
Huawei router reset in South Africa
Use this LTE router guide for common South African home internet problems, including APN profiles, SIM detection, red lights and connected-but-no-internet symptoms.
Quick Answer
Meaning
The router, SIM, APN profile or Wi-Fi network needs a basic connection check.
Most likely cause
The router may need a restart or factory reset after incorrect settings or forgotten login details.
First thing to try
Try a normal power restart before any factory reset.
Contact
Contact your mobile network or router provider if the SIM, plan, account, device lock or hardware warranty may be involved.
Reviewed by Riccardo Vallaro, Telecom & Mobile Services Specialist
Last reviewed: 20 May 2026
Sources we check: General consumer troubleshooting patterns, DataCost internal guide links, public provider self-service concepts, and South African prepaid user needs.
Why trust this: Guides are based on public operator pricing, USSD flows, official support pages, and South African prepaid user needs.
Found outdated info? Send a correction.
What It Usually Means
- A router can have Wi-Fi working locally while the LTE internet connection is still down.
- SIM status, APN profile, signal, plan status and router firmware can all affect browsing.
What to Try First
- Restart the router and wait for all lights to settle.
- Check whether the SIM has active data and is inserted correctly.
- Test near a window or higher signal area.
- Log in to the router dashboard only if you know the admin details.
Step-by-Step Fix
- Check the router lights and note whether the issue is power, SIM, LTE, internet or Wi-Fi.
- Connect to the router Wi-Fi and open the router login page printed on the device label where available.
- Check SIM status, network mode, signal bars and APN profile.
- Create a new APN profile only when you know the correct network APN.
- Test with one device close to the router before judging speed or coverage.
- Contact the network or router provider if the SIM is not detected, the account is inactive or hardware appears faulty.
When to Contact the Provider
- The SIM works in no device or the router reports SIM not detected.
- The router is network-locked or asks for an unlock code.
- The dashboard shows account, registration or activation errors.
- A reset does not restore the router or admin login details are unknown.
What Not to Do
DataCost is not the provider. Do not share OTPs, banking passwords, card details, PINs or personal identity documents with unofficial support channels.
- Do not factory-reset the router before noting the Wi-Fi name, admin login and APN profile.
- Do not share router admin passwords, OTPs or account details with unofficial support channels.
- Do not force SIM adapters or damaged SIM cards into the slot.
Related DataCost Guides
Related Fix Pages
FAQs
Should I reset my router first?
A power restart is safer as a first step. Factory reset only when you have the router login details and know how to restore APN and Wi-Fi settings.
Who should I contact if the router still fails?
Contact the mobile network for SIM, plan and APN issues, or the router seller/manufacturer for hardware and warranty issues.
Official Support Reminder
This is a general troubleshooting guide for South African consumers. Always confirm billing, payment, activation, meter, token, subscription and account-specific issues with the official provider.
Author and review notes
Written by Riccardo Vallaro
Telecom & Mobile Services Specialist
Mobile services and telecom professional with experience across VAS, carrier billing, mobile content, and African operator partnerships.
Reviewed / updated: 20 May 2026
Why trust this guide: Written as independent consumer help for South African mobile, electricity, decoder and router problems. Provider-specific account actions should be confirmed through official support.
Found something outdated? Send a correction.