If you owe, the network will announce that your mobile phone is shut down, and all the activities involving your mobile phone mobile or Unicom network will be forced to stop, so even if there is traffic, the mobile phone can not be used.
Until the card is charged, the system will restart your card to restore all the original functions. Just reboot your phone.
After receiving a successful recharge message, you can surf the Internet (if you do not owe money).
1, re-switch the machine once, because you were in arrearage state before, you need to refresh the state after successful recharge.
2, you can also turn on the airplane mode, and then turn off, you can also surf the Internet.
3, or can not access the Internet may be the problem of mobile phone Settings, directly call customer service can ask.