After analysis, the causes of this problem may be the following:Device lightning port contains impurities such as fiber and debris, resulting in poor contact.The voltage of the wall charger is too low or unstable, resulting in insufficient power supply.The lightning end is corroded/stained, resulting in poor contact.Circuit logic problems/system problems with charging equipment.The chip or mainboard of the cable is damaged.You can try the following solutions:You can use a pushpin to clean out the pocket lint or debris from the charging port.Wipe the Lightning end with a tissue to remove dirt and oxidation marks on the lightning end.Use the original charger or MFi authorized charger, because some laptop USB output ports may have insufficient power output.CompatibilityiPhone 12 12 Pro Max 12Mini iPhone 11 11Pro Pro MaxiPhone Xs Max Xs X, iPhone 8 Plus, iPhone 8, iPhone 7 Plus, iPhone 7iPhone 6s, iPhone 6, iPhone 6s Plus, iPhone 6 Plus, iPhone 5C, iPhone 5S, iPhone 5iPad Air Air 2, iPad mini mini 2 mini 3, iPod nano (7th generation), and iPod touch (5th generation)Nylon Braided CableStrong military fiber, the most flexible, powerful and durable material, make tensile force increased by 200%.High QualityAccording to experimental results, the newly added SR design allows the connector to undergo at least 30,000 bending and insertion tests to provide additional protection and durability. The upgraded 3D aluminum connector and unique laser welding technology can ensure that the metal parts will not be broken, and the connection will be stronger, even if there is a protective cover, it can be fixed and will never be loose.Premium nylon braided adds additional dura