As the celebrations of LG Optimus G Pro's release were still to come down, one more thing brought the South-Korean mobile maker in headlines once again.

A leaked picture, allegedly of LG's Optimus F7 and Optimus F5 started doing rounds on the Internet after being posted in a Twitter post.

This is the first time we are hearing about both the devices, but it looks like that the emphasis given on 'F' in LG's latest MWC video has been decoded.

The latest video has shown punch-lines like "The StyLe", "The Freedom", "The View", and "The Greatness" putting emphasis on characters L, F, V, and G.

It is expected that LG will go ahead and make big announcements at this year's Mobile World Congress in Barcelona, and mobile phones under the series starting with L, F, V, and G will be shown.

The image of said to be Optimus F7 and Optimus F5 is released by evleaks on its Twitter account. Where the right one is of F5 and left one is of F7.

Evleaks had earlier posted the pictures of high-profile devices like HTC One and BlackBerry Z10.

Going by the picture one can't confirm any of the specs of the phones but the difference between the devices is clearly visible.

The picture does indicate that F7 is going to be a bigger device with a physical home button, whereas F5 is going to be a smaller one without a physical home button.

The display, according to the image, of F7 looks little dull, but F5's display looks sharper in comparison of F7's. However, both the devices are surely going to be running on Android OS.

The biggest thing we can identify in the picture is the wallpaper and the date on the wallpaper. The wallpapers of both the phones show Wednesday, May 1.

People can also assume that the F series of LG Optimus may be announced during the MWC in Spain, but it might be made available on or before May 1.