Network blocked by invalid SIM card inserted: Solution

If the notice appears Network blocked by SIM card inserted or something similar, basically it is because you put a SIM from an invalid network on your Samsung cell phone. We explain the cause of this problem, how to prevent it from happening and how to solve it.

In 2013, Samsung implemented a software system that locks its Samsung Galaxy devices when they are turned on with an inserted SIM card that is from a different region than the one the device is destined for.

However, this does NOT mean that you cannot buy a Samsung phone in Europe and use it in America or vice versa. There is a trick to avoid being a victim of this regional blockade. And if it’s too late for you, Samsung could help you with it. SIM card blocked notice.

Network blocked for inserting an invalid SIM

If your cell phone comes with the label of American SIM card only, it means that you must use a SIM from American operators (any country on the American continent). The device will be locked if it is turned on with a SIM card from an operator that does not belong to this region.

The legend European Model O European SIM card only means that the cell phone is only compatible or must be unlocked with a European SIM card.

The idea is the same if you have the sticker European SIM card only. You should only use a SIM card from an operator in any country in Europe to prevent the cell phone from being blocked by the network.

In case of being blocked, you must enter a network unblocking PIN, as seen in the video below.

Samsung stated that this SIM card-based network lock will be present on all devices manufactured from July 2013 onwards that contain the sticker illustrated above. That includes the Samsung Galaxy S, J, Note series, etc.

How to bypass network blocking

The trick is to use a compatible SIM card (from the indicated region) the first time the mobile is turned on. What you have to do is call for at least 5 minutes with that SIM. It can be one or multiple calls that achieve this period of time.

In this way, the network blocking system is permanently eliminated from the device and the SIM from any other region can be used without fear of being blocked. The key is to use the correct SIM the first time the equipment is turned on and to do the indicated procedure.

What do I do if the SIM card has been blocked by network

If you have stayed on the screen with the warning SIM card blocked by network inserted, there is still a solution.

You can contact the Samsung subsidiary in the country where you purchased the phone by email. For instance, this user bought a computer in Spain for use in Argentina, and the advisor instructs you to contact Samsung Spain to lift the blockade, explaining the exact information you must provide. What you will need is the invoice and the purchase details. It is possible that an official Samsung store or service in your area can also help you with this management.