Stop if the phone is hot, swollen, or wet
Disconnect power. Do not press a lifting screen back into place, keep retrying a wet connector, or puncture a swollen battery. Seek an evaluation.
Try a known-good charging set
Test one known-good cable and adapter appropriate for the device. Inspect both for bent contacts, damage, heat, or looseness. Avoid forcing the plug.
Look—do not dig—into the port
Pocket debris can block a connector, but sharp tools can damage pins or compact material further. If the connector will not seat normally, let a repair professional inspect it.
Watch for the useful clues
Note whether wireless charging works, the cable sits loosely, charging cuts in and out, the battery percentage changes, or the computer recognizes the phone. Those details help isolate the fault.
When to ask for diagnosis
Visible port damage, liquid exposure, heat, a drop, repeated disconnects, or a phone that remains completely dead are reasons to stop experimenting and get the device evaluated.