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You plug in your iPhone and… nothing. No charging symbol, or it charges only when you hold the cable at the perfect angle, or it dies at 30% no matter how long it's been on the charger. It's one of the most frustrating phone problems — and one of the most common.
At Cell N Comp Repairs, charging problems are among the highest-volume repairs we handle — roughly 30 to 35 at each of our three Chicago-area stores every month (confirm your exact cadence before publishing). And after thousands of them, we can tell you the cause almost always comes down to a short list: a bad cable, lint in the port, a port damaged by a drop or years of wear, liquid damage, or a worn-out battery.
The good news: some of those you can fix yourself in a few minutes, for free. This guide walks through every cause, from the easy ones to the ones that need a bench — so you know what you're dealing with before you spend a cent.
Before assuming the worst, rule out the simple stuff. A surprising share of "my iPhone won't charge" cases are of this type — and all of them cost nothing.
Charging cables fail far more often than ports do. They fray internally where they bend, often with no visible damage. Try a different cable and a different wall adapter, and plug straight into a wall outlet rather than a computer or power strip. If another cable works, your port is fine — you just needed a new cable.
This is the single most common cause we see that people mistake for a broken port. Pocket lint compacts into the bottom of the charging port over months until the cable can't seat properly. Shine a flashlight into the port — if you see grey or black fuzz packed at the bottom, that's your problem.
To clean it safely: power the phone off, then use a wooden or plastic toothpick, or a short burst of compressed air, to loosen and lift the debris. Never use a metal pin, needle, safety pin, or paperclip — metal can bend the charging pins or short the contacts, turning a free cleaning into a real repair. Reconnect and test. A lot of "dead" ports come right back to life.
Occasionally, the phone is charging, but a software glitch prevents it from showing the charge, or a frozen device won't respond. A force restart clears it: quickly press and release volume up, then volume down, then press and hold the side button until the Apple logo appears (the exact combo varies slightly by model). Harmless to try, and it rules out a software cause.
If none of those brought it back, the problem is hardware — and here's what it usually is.
If a fresh cable and a clean port still won't charge, the port assembly is likely damaged. Two things cause this most often, and we see both constantly:
Drop your iPhone on the wrong edge and the charging port — which sits right at the bottom edge — can take the impact. Pins bend, the connector cracks, or the flex cable that links the port to the logic board tears. Signs include a cable that won't click into place securely, charges only at an angle, or stops working right after a fall.
Every plug-in and pull-out puts a tiny bit of stress on the port. Over three, four, five years, the contacts wear down and loosen. This is why charging problems cluster on older phones — the port simply wore out. It's a normal end-of-life issue, and a straightforward fix.
In both cases, the repair is the same: we test to confirm it's the port, then either repair the existing connector or fit a new charging port assembly. See our iPhone charging port repair page for details and per-model pricing.
Liquid is one of the more serious causes, because it doesn't just block charging — it actively damages components. If your iPhone got wet (rain, a spill, a drop in the sink) and then stopped charging, liquid is the likely culprit, and it works in two ways:
If your iPhone got wet, do this: power it off, don't plug it in, and don't use it. Never charge a wet iPhone — connecting power to a wet port can short and permanently damage the logic board. Dry the outside and let it air out. Skip the bag of rice — it does little and can leave starch and dust in the ports; Apple specifically advises against it.
Liquid damage is time-sensitive: corrosion spreads the longer it sits, so the sooner it's professionally cleaned and inspected, the better the outcome. Bring it in quickly for a free diagnostic — we can clean corrosion from the port and contacts and assess whether the charging circuit was affected.
Sometimes the port is fine and the phone charges — it just won't hold a charge. That points to the battery, not the port. Telltale signs:
A worn battery is one of the most common issues on any iPhone more than two years old, and it's a quick fix. If this sounds like your phone, our iPhone battery replacement page has the details.
Occasionally — usually after a bad drop, liquid, or a power surge from a cheap charger — the charging control chip on the logic board itself fails. The port and battery test fine, but the phone still won't charge. This is a board-level (micro-soldering) repair, more involved than a port swap, and it's the least common cause on our benches. A proper diagnostic tells us whether this is what you're dealing with, so you're never guessing.
After thousands of charging repairs across our three stores, here's the honest breakdown of what's really behind them:
Lint and bad cables account for a big share of the "won't charge" complaints that walk in — and those we'll often clean or diagnose at no charge, because we'd rather send you home with a free fix than sell you a repair you don't need. It's the drops, liquid, and worn ports that genuinely need the bench — and those are most of what we repair.
If you've swapped the cable, cleaned the port, and it still won't charge, bring it to any of our three Chicago-area stores. Our diagnostic is free and carries no obligation: we'll pinpoint whether it's the port, the battery, liquid damage, or the board, tell you exactly what it needs, and provide a quote upfront. Most charging repairs are same-day, backed by our 30-day warranty.
Serving Chicago and the north suburbs, including Evanston, Lincolnwood, Skokie, Niles, and Morton Grove.
