Reason 1: Data Plan Expired or Used Up
Many users finally discover that their device shows a successful connection but still can’t access the internet, which is often due to a depleted data plan.
When your data plan runs out, most carriers impose speed limits. While you remain connected, the speed slows down drastically, making it almost unusable.
So, once this happens, check your account details to see if your data limit has been reached or if your plan has expired at the very beginning. If the plan should be responsible for it, simply recharge your plan to restore internet access.
Reason 2: SIM Card Issues
A faulty SIM card can also prevent your portable WiFi from establishing a stable internet connection. Some typical symptoms of SIM card problems include:
- Frequent "No SIM card detected" alerts
- Temporary restoration after reinserting the card
- Visible oxidation on metal contacts
In such cases, the device may show a network connection, but it is unable to establish a functional data link.
Reason 3: Weak WiFi Signal
Portable WiFi devices have limited coverage areas. If you're outside the coverage zone or there are obstacles like walls and buildings, the signal may weaken, affecting connectivity. Signs of weak signal strength include:
- Only 1-2 signal bars displayed
- Fluctuating internet speeds
- Frequent buffering while streaming
- Notable connection issues in underground garages or elevators
Reason 4: Incorrect APN Settings
The Access Point Name (APN) settings are crucial for connecting to the carrier’s network. If the APN settings are incorrect, the device may appear connected but won’t have internet access. Different carriers have specific APN settings that must be correctly configured.
Reason 5: Device Overheating or Malfunction
Hardware issues such as motherboard or chip damage can also cause connection problems. Additionally, prolonged high-load usage may cause the device to overheat, triggering automatic performance throttling to protect the hardware, which may disrupt internet access.
