The general rule, it seems, with these "mini" versions is they look almost identical to their big brothers but specs are slashed - quad-core becomes dual-core, full HD becomes 720p at best and cameras also take a bit of a beating.
While they may be "mini" in name, they aren't exactly mini in nature with an average screen size of 4.3-inches making these handsets bigger than the iPhone 5 - so you'll probably still need a decent sized pocket for the HTC One Mini.
Rumours of a One Mini handset first arose in April 2013, with early reports name checking the device as the HTC M4.
To help you get an idea of what you might be able to expect from the HTC One Mini we've rounded up all those unruly rumours into our smartphone pen for your perusal.
HTC One Mini release date and price
The trail is pretty cold when it comes to the HTC One Mini release date with no upcoming HTC event to speak of. Early reports suggesting it'll arrive around the same time as the S4 mini have clearly been proven incorrect.
Bloomberg has tentatively suggested that the HTC One Mini release date may be in August, but as of yet we haven't heard anything from the Taiwanese firm about a possibe event.
What we do have in the calendar however is IFA 2013 in Berlin, which could be the perfect platform for the HTC to launch its next smartphone - it might even show up alongside the HTC One Max.
If Samsung's pricing regime for its mini handsets is anything to go by then you can expect the HTC One Mini to sport a mid to high-end price tag which will see it go head-to-head with the Samsung Galaxy S4 Mini, Sony Xperia SP, BlackBerry Q5 and Nokia Lumia 820.
HTC One Mini screen
A consistency noticeable through all the various leaks we've seen so far on the HTC One Mini is the screen size.
HTC made a big song and dance about the Ultrapixel camera on the One and its low-light performance, but even the rumour mill has been pretty quiet on the snappers that may adorn the One Mini.
It's not clear whether we'll see the Ultrapixel shenanigans again, or if the Taiwanese firm decides to return to the more conventional megapixel setup - but apparently the One Mini will be able to record full HD video and capture Zoes with its rear camera.
You can probably expect to see a front-facing camera on the One Mini too, as this option is becoming an almost default feature nowadays - even on cheaper handsets.
HTC One Mini more specs
The design of the HTC One Mini is expected to mirror that of the HTC One and, with that in mind, rumours that suggest it'll sport the same dual front-facing speakers are likely to be accurate.
HTC may even stuff in its Boomsound technology into the One Mini alongside the Beats Audio tech which adorns all its smartphones.
It's thought that the One Mini will also carry 16GB of internal storage, but if it sports the same metallic chassis as its older brother the chance of a microSD slot being available is pretty unlikely.
That body may prove a barrier for hardcore battery fans, as the rumoured 1700mAh power pack is likely to be sealed inside the One Mini, never to see the light of day.
HTC One Mini design
The trump card the HTC One Mini may hold over its Samsung rival is its premium body, with multiple reports suggesting the cut-down smartphone will inherit the metallic chassis from its big brother.
That certainly seemed to the case in an early render of the One Mini posted online by @evleaks, which showed the handset with just a few minor differences - such as the position of the flash.
A pretty blurry image then cropped up apparently showing the One Mini sitting next to the HTC One, although the quality of the snap doesn't exactly lend itself to being trustworthy.
The design was then mooted for a third time in a couple of snaps claiming to show the HTC One Mini in black, with the layout matching that of the early render.