Joke Collection Website - Blessing messages - Why can Unicom's 4G card make phone calls and send text messages but not surf the Internet?

Why can Unicom's 4G card make phone calls and send text messages but not surf the Internet?

You can call 100 10 and dial 0 to check whether the Internet access function is enabled. If it is not enabled, you can apply. If enabled, you can see whether the data connection of the mobile phone is enabled. If it is enabled, try putting the mobile phone card in another mobile phone. If you still can't access the Internet, please bring the owner's valid certificate and mobile phone card to the local business hall to test the mobile phone card.