To be honest,the iPhone can be used for several years without any problem.However,if your iPhone shows the following 5 signals, you may have to start thinking about changing it. Because these signals indicate that your iPhone is likely to running to an end.1.The screen flickersIf the mobile phone screen flickers frequently, it proves that the performance of the mobile phone has declined, and the main reason for this are that the screen is aging, damaged, defective, etc. Of course, accidental damage to the monitor or a disconnected internal cable may also cause the screen to flicker. 2.Screen failureSometimes there is no response when you click on the screen, and the screen automatically performs when you do not click on the screen. This is a common screen failure phenomenon. The reason for this may be caused by damage to the screen or internal failure, especially when the phone temperature becomes higher, the screen failure will be more frequent. When it reaches a certain level, it will directly become an unresponsive screen. 3.Automatic restartDuring normal use, your phone will automatically restart frequently. As for the reason, it is mainly caused by the bad battery conditions. When the battery health is too low for a long time, it may adversely affect the mobile phone hardware and cause it to automatically restart. In addition, defective mainboard or loose connections may also cause the phone to automatically restart. 4.Cannot be chargedThe mobile phone has been charged for a whole day, but it can't charge at all, and it can't be charged by changing the charger or the cable.The reason is probably due to the bad battery and mainrboard problem. 5.The screen protrudes or separates from the frameWhen the screen protrudes or separates from the frame, it proves that your phone is already in a very dangerous state. This is caused by the swelling of the battery. Once the swollen battery ruptures, it may cause the battery to fire and burn the phone, or even cause the battery to explode. Therefore, if you encounter this situation, you should send it for repair as soon as possible to avoid safety accidents.It should be noted that the above situations do not necessarily mean that the mobile phone is completely useless. It is recommended to send it for repair first to find out the problems, and then consider whether to replace the mobile phone or not. In addition, the above five signals also apply to Android phones. About OriwhizWe are committed to manufacturing and selling high-quality LCD screens to professional repair stores, foreign wholesalers and distributors, refurbishment companies, insurance companies, etc.Our goal is to become a respected enterprise, provide caring products for customers, and help customers solve problems 24 hours at any time，welcome inquiry/order,OEM/ODM is acceptable.Our main products include:iPhone LCD,iPhone Charging Port,iPhone Front Camera,iPhone Back Camera,iPhone ear speaker,iPhone Battery,etc.