Reasons to Buy Lenovo K4 Note(Pros and Advantages):
The first pros is the fingerprint sensor which is one of the cheapest smartphone to have this feature.
Second advantage is that the processor is a 64 bit octacore MediaTek MT6753 chipset. Its insanely powerful when compared with other MediaTek powered devices.
For multitasking the Lenovo Vibe K4 Note is powered with 3 GB of RAM which is one of the highest to have.
16 GB of internal memory which can be expanded up to 128 GB with a microSD card.
The 3300 mAh battery capacity which is enough to last through out the day even for avid gamers.
The 13 megapixel camera which is improved from the previous K3 Note both in terms of image quality and performance in low light conditions.
Currently it runs with Android Lollipop which is stuffed with Vibe UI.
Reasons Not to Buy Lenovo K4 Note(Cons, Problems and Issues):
The first disadvantages or cons is that it has a huge amount of bloatwares. I mean unnecessary apps that runs on the background which consumes the RAM and internal storage. Some of the bloatwares can be uninstalled and while others can’t, technically you can root the K4 Note but that will terminate the warranty terms from the manufacturer.
Another cons is the SAR Value which is not revealed by the manufacturer. Users will assume the SAR Value to be high for not revealing the radiation ratings. Actually cellphone radiation is not a problem, but the issue here is with the high SAR ratings.
Next cons is that although there is no any lagging problems or hanging(hang) issues while game-play or multi tasking the Lenovo K4 Note still heats. Now the heating problem is experienced exactly on the back where the processor is fitted. It is not like some kind of insane heating issues, but fells very warm under normal usage. Moreover the heating is experienced when you use the device for browsing the internet(on 3G) while charging the battery.