OnePlus 3 have been successfully launched earlier this year, having reports of pausing sales on 23 countries in Europe and Hong Kong because of the unbelievable demands for the smartphone.

The device was able to reach its way on the top spot of the Top 10 Performance Smartphones list of the benchmarking platform AnTuTu, being able to outrun giants like the Apple's iPhone 6s and Samsung's Galaxy S7 edge, International Business Times reported.

But it doesn't end there. In fact, a lot of rumors have been circulating the web that the successor of the OnePlus 3, even if it was just released back in June this year.

However, OnePlus 4 has been remained as a speculation and still falls under the set of rumors. If there is a speck of truth in these gossips, consumer will be able to decipher the direction of the path OnePlus is going to take in the mobile industry.

Rumor has it that OnePlus is looking for ways to improve the features of their flagship phones with a built-in storage and RAM of the smartphone, as the Chinese producers are necessarily motivated with Apple's latest release of the iPhone 7, according to TechPlz.

As of the moment, OnePlus 3 offers a towering 6 GB of Ram, 3 times higher than that of the iPhone 7 and Samsung Galaxy Note 7's 4 GB RAM. For the upcoming OnePlus 4, consumers may imagine that the next OnePlus smartphone will have a staggering 8GB of RAM together with an expandable memory of 256 GB using a microSD card.

One Plus 4's camera is expected to have a more powerful feature in contrast with the OnePlus 3's 16 MP camera. It could be as high as 23 MP, as much as rumors are concerned.

The price of the smartphone could be expected to be a bit over $400 upon launching, in comparison with the 3's $349 and OnePlus 2's $389.