Samsung has announced a dual-SIM version of the Galaxy S4 packing the coveted 8-core Exynos 5 processor. The handset, which will sadly be a China only affair, should be the most-powerful iteration of Samsung's flagship smartphone available.

The official tag of the dual-SIM SGS4 is I9502. It is 2 grams heavier than the normal version of the phone, but the rest is the same. That means a 1080p screen, top of the line camera and all the bells and whistles you would want from a Samsung flagship. We love it, just read our review to find out why.

There is a rumoured waterproof version of the Galaxy S4 due for release. Whether the tougher handset will contain the top of the line Exynos chip though remains to be seen. 

Getting hold of an 8-core Galaxy S4 in the UK is going to be problematic. The company hasn't been able to get the Exynos 5 working properly with LTE, so 4G regions will get only quad-core phones for the time being. It could come later, but right now the majority of handsets will be getting the 1.9 GHz quad-core Snapdragon processor.