If you’re a Galaxy Note 7 owner, you’ve probably spent the last few weeks wondering whether your handset is at risk of exploding. Now there’s an easy way to tell, according to Samsung Australia. Here’s what you need to look for.

Samsung maintains that only a small percentage of the 2.5 million Galaxy Note 7 handsets sold so far are affected by the battery issue that can cause devices to explode while charging. But even so, you need to know if your handset is safe.

According to Samsung Australia, you can tell by checking out the label on your Galaxy Note 7’s packaging. New handsets, which do not have the battery fault, have a “small black square on the white barcode,” and a round sticker with the letter ‘S’ on it.

It should look a little something like this:

If the label on your Galaxy Note 7 box does not contain these markings, then it’s an original unit that could be at risk. You are advised to contact Samsung or the carrier or retailer you purchased it from to arrange a replacement.

If you didn’t keep the box for your Galaxy Note 7, you will soon be able to run its IMEI number through Samsung’s website to find out if it’s safe or not. The database will go live once replacement units become available.

Until your Galaxy Note 7 is replaced, you can continue using it. However, it’s best that you do not leave it charging unattended, or charging overnight.