Charging problems are often due to issues with the cable, adapter, charging port, or battery health. First, inspect the charging cable for any visible damage; frayed or bent cables are common culprits. Trying a different cable and adapter can help isolate the problem. Additionally, lint or dirt in the charging port can prevent a solid connection; carefully cleaning it with a dry toothbrush or compressed air may restore functionality. If the phone charges intermittently or only at certain angles, it’s a sign the port may be loose and may need professional repair. For wireless charging, make sure both the phone and charging pad are properly aligned and that any case isn't obstructing the connection. If none of these solutions work, the battery itself may be failing, especially in older devices, and may need replacement for reliable charging.