OnePlus has launched its much-hyped smartphone, the OnePlus 3. Unlike earlier flagships from the company, this device may well turn out to be a flagship killer. It is a well-balanced handset with rich features and could give a tough competition to devices that are even double its price, but it has a few flaws like all mobile phones.

The OnePlus 3 is priced at just Rs. 27,999 ($399 in the United States and £309 in the UK) despite featuring best technology currently available in the market. But there are a few gray spots as well that the fans will be upset with.

Here are four most disappointing features of OnePlus 3:

Storage:

The biggest disappointment of the OnePlus 3 is its 64GB internal memory, and that too without a microSD card slot. Google's LG Nexus 5 was one of the best devices at the time of its launch but its internal storage was just not enough for many. Fans of the OnePlus might have expected more from the latest device in terms of storage.

Display:

The OnePlus 3 sports a 5.5-inch Full HD Optic AMOLED display with 1,920x1,080 pixels (401 ppi pixel density). Most devices at present have a 2K display but the OnePlus 3 has a Full HD display, the same seen in its predecessor. Many might have expected more than the 401 ppi in the flagship device.

LED Flash:

The device mounts a 16MP Sony IMX 298 Sensor main camera with f/2.0 aperture, OIS, LED flash, 1.12 µm, and an 8MP Sony IMX179 front-snapper with 1.4 µm and f/2.0 aperture. The sensor pixel size was decreased to 1.12 microns from 1.3 microns seen in the OnePlus 2, but that's not a point of worry because the company has brought noticeable upgrade to its camera. However, photography enthusiasts will be disappointed with a single LED flash.

Colour:

Some may say colour doesn't matter but it does. Those looking for bright and colourful handsets will be in for a disappointment as the OnePlus 3 is currently available only in grey. Gold colour handsets are expected to come at a later date.

There are a few departments that OnePlus could have improved on in its flagship device but one has to know that no mobile phone is perfect. With features like Qualcomm Snapdragon 820 quad-core processor, Android Marshmallow, 6GB RAM, and 3,000mAh battery with quick charge technology dubbed as the Dash Charge (5V 4A), the OnePlus 3 is one of the best devices currently available in the market. It is perhaps the best device in the Rs. 25,000-Rs. 30,000 bracket, and may even give flagships from major technology compamies a run for their money.