If your location is well covered by Etisalat network, you might still be unable to browse with your mobile device or PC, if your device is not configured with the correct apn settings for Etisalat Nigeria, even after you might have subscribed to an Etisalat data plan.
Code To Get Etisalat Internet Settings Via SMS
You can request for Etisalat's internet browsing settings (also referred to as APN settings or packet data settings on some phones) by typing the word SETTINGS as an SMS and send to 790, free of charge.
If your device allows over-the-air updates, you will receive an SMS notifying you to save setup information that the network will send to you. Save the settings as soon as they are delivered to your phone to avoid deleting them in error.
For devices that need to be configured manually, you will need to configure the data settings on your device with the settings information provided below:
Etisalat Internet Data Settings
→ Account Name = Etisalat Internet
→ Username = (Please leave it blank)
→ Password = (Please leave it blank)
→ Access Point Name (APN) = etisalat
→ Home Page = http://mobile.etisalat.com.ng
***Note: No username or password is required to use Etisalat's data settings.
You can learn how to configure Android phone with Etisalat settings here.
Source: Etisalat Internet, WAP and MMS Settings