Touch Problem-
In the starting few months the smartphones run's well but after few months Touch doesn't work properly. The touch doesn't respond properly and user gets frustrated. User spend lot's of money again and again to maintain the touch of the phone but it doesn't work.
Hanging Problem-
Cheap smartphone doesn't comes with great RAM and Processor. As due to this phone hangs again and again. Today maximum app developer are designing apps for heavy usage and Cheap smartphones can't handle these high memory consuming apps. So this is a major problem of Cheap smartphones.
Update Problem-
Cheap smartphone doesn't get update which is a big problem as company doesn't send updates to smartphones so they doesn't get latest security updates, memory and battery optimization updates and many more.
Battery and charging problem-
Problems related to batteries are common in cheap smartphones. After few month so many problems with battery like- various problems while charging, battery heating problem, poor battery backup etc. User gets irritated while handling the smartphone with poor battery life.
Charging point and headphone jack problem-
So many times a user insert headphone/earphones in headphone jack and it doesn't respond. This is a big problem as cheap smartphone uses cheap and rejected hardware in the phones so problem occurs many time.
Unsatisfied user service-
So many cheap smartphone manufacturing company's doesn't have their service centers and those who have service canters doesn't provide satisfactory services. A user always gets disappointed by their service.