The Samsung Galaxy S5 is a top smartphone with a lot to shout about, but with increased pressure from HTC, Sony and LG, there are suggestions that Samsung is looking to give its flagship another boost.
Compare the build quality of the Galaxy S5 to the HTC One M8, Sony Xperia Z2 and iPhone 5S and the Samsung flagship feels cheap in comparison, while the full HD display is unlikely to be a match for the QHD offering on the upcoming LG G3.
To tackle these two points head-on, the Samsung Galaxy S5 Prime is apparently being readied in South Korea - with a bumped up screen and shiny new chassis.
These issues may see the Galaxy S5 Prime release date shifted to late June or even early July - it's difficult to say at the moment. But we're in June now and there's still no firm sign of it, so we're increasingly sceptical about that particular date.
An alternative and at this point probably more likely release date is September. Twitter leaker @evleaks received a tip claiming as much. Or more specifically claiming that the Samsung Galaxy F (which is believed to be one and the same as the Galaxy S Prime) will be launching then.
If it does then it will likely be going head to head with the iPhone 6, but that could be the whole point. While most manufacturers get out of the way of an Apple launch, Samsung is perhaps the only one which has the muscle to compete, so it may be a tactical move to steal away some would-be iPhone buyers.
The reasoning behind this decision is questionable, as the current Galaxy S5 has an eye-popping display which has been dubbed the best performing smartphone screen by independent benchmarkers.
A key factor in the S5 Prime potentially sporting a QHD display is what's happening over at Samsung's fierce Korean rival.
LG has confirmed it will slap a QHD screen on its next flagship smartphone - the LG G3 - and the S5 Prime could be Samsung's response in an attempt to stay relevant in its national market.
That said, more recently a handful of videos from TK Tech News have appeared on YouTube apparently showing a pre-production version of the S5 Prime with a full HD, 1080p display - matching that of the original S5.
Chassis, power, OS and more
Samsung Galaxy S5 Prime chassis
The second major upgrade which could find its way onto the Galaxy S5 Prime is the all metal chassis, as Samsung looks to bring the same appeal to its flagship smartphone as the likes of the iPhone 5S and HTC One M8.
We've also seen the model IDs SM-G870A and SM-G850F pop up in various places recently, although these are though to be linked to the Galaxy S5 Active, rather than the S5 Prime.
Interestingly TK Tech News claims to have of a pre-production version of the SM-G870A which it's billing as the S5 Prime due to its aluminum rear cover.
The site has posted several YouTube videos showing off the handset in question, and although it is referred to as the Prime, the thicker dimensions and more heavy-duty seal around the rear plate all seem to suggest it's actually the rumored S5 Active.
PhoneArena also reckons it's got some details on the Galaxy S5 Prime frame, with a set of images showing a dimpled back just like the S5 - although the site claims that the handset in these shots sports a metal rear.
It's difficult to tell from the photos what material is in use, but it appears the internal speaker may be moved from the rear of the Galaxy S5 to the base of the S5 Prime - a better position if you ask us.
Samsung Galaxy S5 Prime power
The Galaxy S5 sports a 2.5GHz quad-core Snapdragon 801 processor, but the Galaxy S5 Prime may be in for a bit of a treat.
Some reports are suggesting the S5 Prime will pack the newer 2.5GHz quad-core Snapdragon 805 chip, which would make it one of the first smartphones to do so.
As well as the improved processor, the Galaxy S5 Prime is also tipped to come with 3GB of RAM and an Adreno 420 GPU - up from 2GB of RAM and an Adreno 330 GPU on the S5.
Samsung Galaxy S5 Prime operating system
The Galaxy S5 Prime could go one better than the S5 again, with the currently unreleased Android 4.4.3 KitKat platform leaked as the version apparently coming with the handset.
That's a slight step up from Android 4.4.2 which comes on the Galaxy S5, and you can expect Samsung to slap its TouchWiz UI over the top of 4.4.3 on the S5 Prime.
Samsung Galaxy S5 Prime battery
If the Samsung Galaxy S5 Prime really does arrive boasting a QHD display it's going to need some excellent battery performance to ensure you're not dashing to a plug after just a few hours.
The rumored Snapdragon 805 chip should provide some additional power efficiency, but reports also point towards a 3000mAh battery which is slightly larger than the 2800mAh offering in the S5.
We also saw Samsung include an extreme power saving mode on the Galaxy S5, and we expect the same function to appear on the S5 Prime to help battle the drain from that screen.
Samsung Galaxy S5 Prime more specs
In terms of cameras the Galaxy S5 Prime looks set to adopt the same 16MP rear and 2MP front snapper of the S5 with 4K video recording on board and a host of options and effects we've become accustomed too on Samsung's high-end devices.
The heart rate monitor on the back and fingerprint scanner under the home key will apparently also make the jump.
It will also apparently pack Bluetooth 4.0 Low Energy, if a listing on Bluetooth SIG is to be believed, although it does come with yet another model ID: SM-G906L.