Go abroad sim card shows no activation.

dial 186 to switch to manual operation, and ask the business personnel to help activate it.

just send a short message to a friend to activate it.

call a toll phone at will, and it will be activated when you get through.

activation should not be activated, but it can be used. Global roaming should be enabled.

If the display of your Unicom mobile phone number activated SIM card is invalid, there may be the following reasons:

1. The contact between the SIM card and the metal contact of the mobile phone is poor or the battery is loose, so it is recommended to remove the SIM card and re-insert it into the mobile phone to try;

2. The SIM card doesn't match the mobile phone. It is suggested to put the SIM card into someone else's mobile phone for a trial. If it can be used normally, please take the maintenance card and mobile phone to the mobile phone after-sales service provider to test the mobile phone. If it can't be used normally, it is suggested that the owner bring his valid ID and SIM card to Unicom business hall to test the SIM card.