Symptoms
- Charging starts only when the cable is held or taped at a specific angle
- Charging cuts in and out when the cable moves
- Problem follows the cable to other devices
- Connector end feels loose or wiggly
Likely causes
- CommonInternal wire break near the connectorRepeated bending fatigues the thin wires inside, so only one exact angle keeps them touching.
- CommonWorn or bent connector pinsThe metal contacts can bend or wear down from years of insertion.
- PossibleDirty or corroded connectorA thin film of grime can make contact unreliable until pressure is applied.
- Less commonDamaged charging port on the deviceIf the same cable behaves fine on another device, the port itself may be the problem.
What to do
- Test the cable on a second device to confirm the cable, not the device, is at fault.
- Look closely at the connector for bent pins, corrosion, or visible cracking near the plug.
- Wipe the metal connector with a dry cloth or a cotton swab lightly dampened with isopropyl alcohol.
- Flex the cable gently along its length while plugged in to find the exact failure point.
- Stop using a cable with an internal break; taping it in place is a temporary workaround, not a fix.
- Replace the cable rather than repairing it, since internal wire breaks cannot be safely fixed at home.
Tools and parts
- Flashlight
- Cotton swab
- Isopropyl alcohol (optional)
Replacement charging cableSearch: “USB charging cable replacement”
When to call a pro
No professional needed for the cable itself; if a brand-new cable shows the same symptom, have the device's charging port inspected.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.