If you’re disappointed that your HTC One didn’t come with a microSD card slot, then you’re going to be extremely jealous of users in China. Not only will the device have a removable back cover and a microSD card slot when it launches there, but it’s also have two SIM card slots as well.

In markets where the HTC One is already available, the device is completely sealed like the original One X — you can’t pull off the back to switch batteries or slot in a microSD card. But when the device launches in China, it’ll be slightly different.

First, it’ll come in three variants, named the HTC One 802w, the 802t, and the 802d. One will be compatible with China Unicom’s WCDMA network, the other with China Mobile’s TD-SCDMA network, and the third with China Telecom’s CDMA network.

If you’re wondering, the European version of the HTC One is the 801n.

On the 802w, there will be a removable back panel and beneath it two SIM card slots and a microSD card tray. The device is identical to the original, but the aluminum panel that sits between the two plastic strips on the back of the device pops out — as you can see in the picture up top.

It’s unclear why HTC didn’t give all One devices these features. We assumed that the device was sealed because it was made of aluminum and that it was just easier to keep it in one piece, but if HTC has figured out a way to add a removable back panel to the existing design, why can’t we all have one?

• ViaEngadget