Apple, HTC, Motorola and Samsung boasted their flagship smartphones as the best in the world, but they have left problematic impressions from battery issues to overheating crisis that contributed to more than 13,000 reports at Fixya.com.

Apple's iPhone 5S

The iPhone 5S has been reported with two major problems - battery life and Touch ID fingerprint scanner. The iPhone 5S is a high-powered mobile device and battery issues can come up anytime but complaints on the security and general privacy of the Touch ID system is unique. It seems like Apple needs to do some work on how the system works and how safe the feature is.

HTC One

The HTC One is widely known with its acclaimed Beats audio technology and dual speakers, but owners reported problems in battery life problems, camera quality and audio. This was despite more time spent on screen display quality and industrial design, notes Fixya.

Motorola X Phone

Generally, the Moto X gained positive reviews due to its hands-free functionalities, intuitive systems and long lasting battery life but those things didn't make it perfect - no microSD card support. Owners have complained on how to expand the lack of storage for tons of files, videos or music. Fixya commented that cloud storage is the only way to expand the limitation but may become troublesome if a user is off the grid, roaming or needs larger storage space.

Samsung Galaxy S4

The upgrade of the Galaxy S3 to the Galaxy S4 includes powerful processor, better screen quality, thin bezel and slimmer design. But overheating is the most common report against Samsung's current flagship smartphone. Due to its high-power design, the Galaxy S4 can heat up to the point of uncomfortable usage.

The following are the major trends according to Fixya's report:

1. Samsung Galaxy S4 users may experience overheating and battery issues due to powerful processing power, as is the case with other smartphones.

2. The Moto X's lack of storage expansion slot and low internal storage space earned complaints as the only solution is to get cloud storage option.

3. The iPhone 5S features powerful processing and unique Touch ID fingerprint scanner, but it suffers from battery issues and, as shown by the recent NSA scandal, the fingerprint password feature is also an obvious concern.

4. The HTC One claims the new "ultrapixel" camera technology received complaints and it is not surprisingly with the obvious focus on screen display and impeccable design.