The PDP Authentication Failure can be related to your settings or eSIM data/validity. Please check if you have experienced the following:
This error can happen whether you're using the new Airalo or the public Airalo — the checks and fixes below apply either way; only where you find your package or eSIM details differ.
How do I know which version of the app I'm using?
- If the app asks you to set up your device once and buy packages, you are using the new Airalo. Simply open the Packages tab (formerly "My eSIMs") to complete setup, and after that, whenever you buy a new package for your desired destination, it will be added to that same device automatically — no new eSIM needed.
- If the app shows individual eSIM installation instructions for each purchase and the My eSIMs tab instead of Packages, you are likely using the public Airalo.
Step 1: Verify APN Settings
An incorrect or missing Access Point Name (APN) is the most common cause of PDP Authentication Failure.
If you're using the new Airalo:
- APN is set automatically.
- If you do not have internet access, check your phone's cellular settings to ensure the APN for your Airalo line is set to Automatic.
- If it does not set automatically, manually type in: globalapn (all lowercase, one word).
If you're using the public Airalo:
- Some eSIMs on the public Airalo require a specific APN. In most cases, it sets automatically.
- To check if a manual APN is required: Go to My eSIMs > View Details > Ready to use your eSIM? > Connect to a Network > How to connect.
- Update your phone's Cellular/Mobile Data settings to match the provided APN exactly (all lowercase, one word).
Step 2: Check Your Data Balance & Network Selection
- Remaining Data Balance: Ensure you still have active data remaining. If your data package is completely used up or expired, the local network will reject the authentication attempt.
- Supported Network: Confirm you are connected to a supported local carrier for your destination.
- New Airalo: Check your package details by going to Packages > select your package > Package Details.
- Public Airalo: Go to My eSIMs > View Details > Install eSIM and scroll down to view supported networks.
3. If Automatic Network Selection connects you to an unsupported network, switch it to Manual in your phone settings and select a supported carrier listed in your package details.
Step 3: Reset Network Settings
If your APN and data balance are correct but you still cannot connect, clear your phone's network cache:
- Go to Settings > General > Transfer or Reset [Device].
- Tap Reset > Reset Network Settings.
- Restart your device once the reset completes.
Note: Resetting network settings will erase saved Wi-Fi passwords and Bluetooth pairings. You will need to reconnect to Wi-Fi manually afterward.
If the issue persists, please contact us for further assistance. If you have any questions, please feel free to contact support.
