If your Qoolline eSIM appears connected to a network but isn’t providing internet access on 4G/LTE/5G, there may be several reasons behind the issue. You might encounter problems such as:

• Extremely slow download/upload speeds
• Only "E" (Edge) appearing in the status bar, instead of 4G/LTE
• Inability to use the internet despite an active eSIM connection

Possible Causes and Solutions:

Android

1. APN Settings: Verify that your APN (Access Point Name) settings are correctly configured for Qoolline. Incorrect APN settings can prevent a stable data connection. Check the APN details provided by Qoolline and ensure they are accurately entered in your device settings.

2. Network Compatibility: Some regions or networks may have limitations on eSIM connectivity. Ensure that your device and location support 4G/LTE/5G for eSIMs. Switching to a different network mode in your device settings might help.

3. Device Software Update: Outdated software can sometimes interfere with network compatibility. Make sure your device’s operating system is up-to-date to avoid connectivity issues.

4. Restart Your Device: A simple restart can often resolve temporary network glitches and reconnect your device to a stable data network.

5. Check Carrier Coverage: In areas with limited network coverage, data connection may be impacted. Verify that Qoolline provides coverage in your current location.

iOS

1. APN Settings: Verify that your APN (Access Point Name) settings are correctly configured for Qoolline. Incorrect APN settings can prevent a stable data connection. Check the APN details provided by Qoolline and ensure they are accurately entered in your device settings.

2. Network Compatibility: Some regions or networks may have limitations on eSIM connectivity. Ensure that your device and location support 4G/LTE/5G for eSIMs. Switching to a different network mode in your device settings might help.

3. Device Software Update: Outdated software can sometimes interfere with network compatibility. Make sure your device’s operating system is up-to-date to avoid connectivity issues.

4. Restart Your Device: A simple restart can often resolve temporary network glitches and reconnect your device to a stable data network.

5. Check Carrier Coverage: In areas with limited network coverage, data connection may be impacted. Verify that Qoolline provides coverage in your current location.

Conclusion:
If your Qoolline eSIM isn’t providing a reliable data connection, ensure that your APN settings are correct, update your device software, and check coverage in your area. If issues persist, Qoolline support is here to assist you with additional troubleshooting steps.