After the frenzy of anticipating and finally buying the Apple iPhone 5S and 5C, iPhone users are now reportedly growing disappointed over the gadget's problems, especially its Touch ID feature, Forbes reports.

A lot of iPhone veteran users have chosen to upgrade to iPhone 5S for its Touch ID feature. However, now it seems that the new featurehas become more of a liability instead. Users observed that the feature works, but only initially. In the very second and succeeding uses, the feature becomes erratic or non-responsive. As a result, users will have to resort to punching in their passcode. Instead of a breezy one-touch ID to access the iPhone 5S, the owner will have to key in the passcode every time, reports Forbes.

Another setback, according to Daily Finance, is that the Apple gadget is susceptible to the so-called "blue screen of death" -- the dreaded system crash that plagued Windows users for years. In fact, the iPhone 5S unfortunately has the tendency to crash twice more often in comparison with earlier iPhone models.  This is only understandable, tech geeks say, as its 64-bit processor is certainly a step-up from 32-bits in older models, but compatibility issues are sure to crop up.

Forbes reveals that in Apple's support discussions, there are specific instructions to follow in order to achieve 100% reliability in the Touch ID feature. The problem is that users find the procedure too fussy, and the entire process seems to be too tedious and very user-unfriendly.  For example, users have to, "start by putting the meat of the finger being registered on the button for the first picture taken. Then put the finger back down and before it hits the button, roll it up on the left edge, at about a 45 degree angle, and then put it on the button, then repeat by rolling up the right edge at a 45 degree angle. Then tip up the front of the finger and place it down (not too angled up). Then start the 4 step cycle again until it states it is now ready for you to adjust your grip," according to Forbes.

Meanwhile, the iPhone 5C is reportedly not doing well in the market, and that Apple has cut production by half, according to the Daily Finance.