You put your phone on charge overnight, and in the morning it's at zero percent. Or it charges, but agonizingly slowly: it gains 15% in an hour and stops. We get asked about this a lot, and the first question is always the same: what's broken—the cable, the adapter, or the port on the phone itself? Let's break it down.

Why your iPhone stops charging

There are several reasons, and they vary greatly in severity. The most harmless is dirt in the port or a dead cable. The most unpleasant is a faulty charging board or a swollen battery. Between these extremes, there are plenty of options.

Most often, the cable is to blame. Lightning and USB-C cables are fragile things, especially near the connector. Bend it once over the edge of a table, wrap it around the charger a second time—and the wires inside are already fractured. Outwardly, the cable might look intact, but there's no contact.

The adapter breaks less often, but it happens too. Especially cheap, uncertified "chargers"—they can simply stop delivering the required voltage. The charging indicator might appear on the phone, but the battery percentage doesn't go up.

The port itself is a different story. Pocket lint, dust, and crumbs get packed inside. The connection is lost, and the phone doesn't detect the cable. Or the port is mechanically damaged—the cable was yanked out, and something inside shifted.

What to check yourself—step by step

  1. Try a different cable. Preferably an original Apple or MFi-certified one. If it starts charging with another cable, you've found the culprit.
  2. Try a different adapter and a different wall outlet. It sounds cliché, but we've had cases where someone couldn't charge their phone for two days just because of a tripped circuit breaker.
  3. Clean the port. Take a toothpick or a wooden skewer and gently scrape inside. You'd be surprised how much compressed lint can be in there. Do not use metal objects—you will scratch the contacts.
  4. Restart your phone. It rarely helps, but sometimes iOS simply loses connection with the power controller. It's a quick check and costs nothing.
  5. Check wireless charging. If you have an iPhone 8 or newer, place it on a MagSafe or Qi charger. If wireless works but wired doesn't, the problem is in the port or the cable, not the board or the battery.

Real-life examples

Recently, someone brought in an iPhone 13—the owner said it wasn't charging at all and thought the battery was dead. We looked inside the port—there was lint as dense as a winter coat. We cleaned it in five minutes, and the phone came back to life. Diagnostics are free, port cleaning starts from 300 rubles.

Another case: an iPhone 12 Pro was charging, but very slowly—gaining only about 40 percent overnight. It turned out that a cable with a tear near the base was causing an unstable connection. We replaced the cable, and the problem was solved. But sometimes the cable is fine, and slow charging is due to a degraded battery that can no longer handle a normal current. You can't figure this out without proper measurements.

When you definitely need a technician

If you've changed the cable, the adapter, and cleaned the port, but it still won't charge or behaves strangely, you shouldn't dig any deeper on your own. Especially if you notice any of the following:

  • the phone gets hotter than usual while charging;
  • the charge level jumps—from 50% to 30%, then back to 50%;
  • the iPhone shuts down at 20–30% charge;
  • the port is loose or you heard a crunch when plugging it in;
  • the phone has been exposed to water—even if it worked fine afterward.

This points to a battery, power controller, or hidden port damage. You can't diagnose this without proper equipment.

Come to iClub.pro—diagnostics are free, and we'll tell you honestly what the issue is and how much it costs to fix. We are located at Kommunisticheskaya, 35 in Novosibirsk.