Sony D6503 ‘Sirius’ Rumour Mill

UPDATE (22/02/14): AnTuTu benchmark info shows that the D6503 will only have 2 GB of RAM rather than the prototype’s 3 GB.

While Sony managed to very impressively keep the Z Ultra Google Play Edition’s existence under wraps until launch, it seems that their next device will not be protected by an as strong veil of secrecy. While it has been just 4 months since the launch of their current flagship the Z1, it has been nearly 8 months since the Z Ultra released and 11 since the ZL launched.

Still, over the past month, leaks of a new Sony device have been circulating, and we’re here to bring you a leak round-up (we also did a piece on the Samsung Galaxy S5 rumour round-up).


Thanks to iRimas from XDA, we now know that the new device’s model number will be D6503. He has also graciously provided us with the following leaked photos.

Looking at the first image, it seems that the microSIM card slot and microUSB slot share the same cover on the left side of the device. Nothing else has changed there – the only other port is the magnetic charging port which seems to be the same size as that of the Z1, Z1 Compact and Z1S.

Looking over to the right, you see that the microSD card slot has been shifted there, but nothing else is different. The large aluminium power button, volume rocker and hardware shutter key are in the same place.

At the bottom seems to be a largely different case – instead of the large speaker grille of the Z1, it has been replaced with three semi-large holes instead. The lanyard eyelet position has also been shifted over to the left side.

There is nothing of news at the top of the device save for the microphone. The 3.5mm headphone jack and notification LED light reprise their locations from the Z1.

The back seems to share the same design as the Z1 as well, and the camera module seems to still be a 20.7 MP one with a 1/2.3 inch sensor and Sony’s G Lens.


The D6503 will be having identical internals as the Z1.

It will be coming with a variant of the quad-core Qualcomm Snapdragon 800 – the latest and most powerful mobile processor available. It will be clocked at 2.3 GHz. Accompanying it will be the Adreno 330 graphics. It will also have the same amount of RAM as the Samsung Galaxy Note 3 – 3 GB. The D6503 will be coming with 2 GB of RAM.

It will also be featuring Sony’s superb 20.7 MP G-Lens camera (1/2.3 inch image sensor). The screen size will be slightly increased to 5.2 inches, and if it’s anything to go by on, the D6503 has much reduced bezels compared to the Z1.


It will also be packing a 5.2 inch 1080p IPS LCD display, unlike the foolish 2K resolution figures that were being thrown around before.

The D6503 might be the first non-Nexus device to launch with Android KitKat 4.4, so that will be an interesting touch.


The device is also following the ZL’s naming scheme, whose model number was C650x. Similarly, ‘Sirius’ will also be using the -650x naming scheme.


Below are some screenshots of the UI that surfaced, but they are for an older build. As said above, the D6503 will be launching with 4.4 KitKat. The reason it says 4.86″ and 1776 x 1080 is because it does not take into account the navigation and notification bars.

From what it looks like, there has been little change in the UI, and it looks as great as ever.


In one word – no. Sony is not a foolish company that it will go about releasing flagship devices every 4 months. What this probably is, is a refresh of the Xperia ZL, which launched last year in March. Unlike the Z, it was not waterproof and was thus cheaper, being aimed at emerging smartphone markets where purchasing power is lower.


With the 22nd January update that it will be have 2 GB RAM, this gives it identical specs to the Z1. This makes it without doubt a ZL refresh, rather than the Z2.

While there is barely and difference between the Xperia ZL and Xperia Z, it seems that Sony will be continuing this tradition in 2014, modeling the ZL refresh’s specs after the flagship, adding slight tweaks and removing some features like waterproofing to cut down the cost.

Currently Samsung stands uncontested in the phablet category, and it is entirely possible that Sony wants to go up against them here.


Right now, without an official announcement about this device and any competitor devices, we would recommend you to wait. When released, it will probably be priced the same as the Z1 was on launch – S$998 off contract.

It is possible that the D6503 will be overshadowed in terms of buzzwords by the clever marketing of Samsung, who will be releasing their S5 in April, however it will probably be a much more superior device.

Stay tuned for more information about the D6503 ‘Sirius’!

3 thoughts on “Sony D6503 ‘Sirius’ Rumour Mill

  1. Double fail! It definitely is the Z2, and even the D6503 is going to have 3 GB of RAM, despite the update’s claim.

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