We’ve already seen a few leaked renders of the LG G4, but this morning the first alleged real photos of the device have surfaced. Shared online through the XDA-Developers forum, these four new images may be our best look yet at the upcoming flagship phone.

The most exciting photo of the four shows the device from the back. There’s no G4 branding, but LG’s logo is clearly visible along with the stern warning that this unit is “NOT FOR SALE.” We’re guessing this is a mostly-finished prototype, and it packs the full set of rear buttons, flash modules and what looks like a built-in extending antenna—common in South Korea where this device was likely made.

Meanwhile, three images of the G4’s front offer a look at LG’s unique take on Android 5.0 Lollipop. The device sports onscreen navigation buttons and what looks like a pretty simple take to Google’s mobile software. The settings menu appears clean and easy to use. Hopefully that applies to the rest of the UI as well.

We’re expecting the LG G4 to sport a powerful 20.7-megapixel camera, a beefed up 3K display and a plastic design similar to the G3. We’ve also heard rumors the device could feature a slightly curved display, though today’s leak makes the new phone look pretty flat.

LG is expected to unveil the G4 sometime this spring, roughly a year after the G3 made its debut. With April just a few days away, it may not be much longer before we get an official look at what’s shaping up to be one of the best new phones of 2015.

Update: A new image was posted that allegedly shows the stylus, creating some suspicion that we might be looking at the G4 Note instead of the G4. It still looks like a metal antenna to us, as Droid-Life speculates, too, but we’ll let you judge. Here’s the shot: