If you have an iPhone or Android smartphone, the UK O2 blacklisted phone unbarring service is temporarily back online to remove it from carrier blacklist.
Many bargain hunters are regularly caught by surprise when purchasing a used iPhone or Android phones such as a Samsung Galaxy due to the device being blocked or blacklisted by the carrier.
In the UK and most countries in Europe have been blocking or blacklisting devices if they’re reported lost, stolen or missing. It was done much earlier than USA.
In the UK, the blacklist database check is called checkmend. It’s a paid service to query the status of any device to determine its status.
Each device has a unique identifier which is called the International Mobile Equipment Identity or IMEI. Whenever a carrier blacklists a device, the IMEI will be used.
When the iPhone or Android phone tries to connect to a UK network, the carrier will cross check the IMEI on the database. If it’s marked as blacklisted, the phone will show as ‘no service.’
This is one of the most common issues encountered by people who buy used devices. It can be an expensive lesson for them because normally there’s no way to remove the blacklist of the device unless it’s done by the carrier.