The right connector does not guarantee the speed you expect. A cable must support the current and protocol used by the charger-and-phone pair, while file transfer has its own separate data-speed specification.
01Five questions to ask
- Which connector is required at each end: USB-C, USB-A, Lightning or another format.
- What power the manufacturer states and whether it suits your charger.
- Whether data transfer is needed and what speed is stated rather than assumed from the connector shape.
- Whether the length suits the setting: excess cable is awkward in a car, while a short one limits socket placement.
- Whether the cable has clear labelling and reinforcement at frequent bend points.
Use it safely
Do not use a cable with exposed conductors, melted housing, intermittent contact or a plug that becomes noticeably hot. Pull the connector rather than the wire. For high power, choose verified specifications instead of relying on a large number printed on the box.