iPhone Showing Charging But Battery Percentage Not Increasing
By Robert Jones · 2021-08-13
My iPhone's showing it's charging, but the percentage won't budge. We've all been there, haven't we? Let's sort out why your phone's being stubborn and how to get that battery topped up properly.
 *iPhone Showing Charging But Battery Percentage Not Increasing — tested in the SpeakersMag workshop.* ## iPhone Showing Charge, But No Actual Juice? Let's Get It Sorted. Right, who hasn't been there? You plug in your iPhone, see that familiar charging icon pop up, and then... nothing. The battery percentage just sits there, stubborn as a mule. It's frustrating, isn't it? Especially when you're about to head out and desperately need a bit more power. Or worse, you've left it on charge overnight, expecting a full tank, only to wake up to a measly 30%. Happens more often than you'd think. I've seen this countless times over the years, not just with my own gear but with what friends and family bring over too. "Bob, my phone's broken!" they cry. Most times, it's something daft, a quick fix. Sometimes, though, it's a bit more involved. But let's get one thing straight: it's not always the phone itself that's on the blink. Often, it's the bits and bobs you're plugging into it. ### **Quick Verdict: Start with the cable and charger. 9 times out of 10, that's your culprit. If not, clean the port. Still no luck? Then we get into software and potential hardware issues.** #### Who it's for: * Anyone with an iPhone that's showing the charging icon but not gaining battery percentage. * Those looking to troubleshoot common iPhone charging problems without a trip to the repair shop. * People who want to avoid shelling out for a new phone or expensive repairs unnecessarily. #### Who should skip it: * If your iPhone isn't even *showing* the charging icon, this might not cover your specific issue (though some initial steps are still relevant). * Those who've already tried *everything* mentioned here and are certain it's a major hardware fault. * If you're terrified of poking around with a toothpick, maybe get a tech-savvy friend to help. ### The Obvious Culprits: Cables and Power Sources First things first, let's rule out the simple stuff. It sounds daft, but often it *is* the simple stuff. Back in the day, I had an old iPod Classic that did this. Drove me mad. Turned out, it was just a dodgy cable. Had me pulling my hair out, thinking I'd have to replace the whole thing. Lesson learned. #### The Cable: Not All Wires Are Created Equal Honestly, not all cables are created equal, eh? Those dirt-cheap ones you find at the market or the service station? Probably best avoided. They might look the part, but the internal wiring can be shocking. I've seen enough melted connectors and failed charging sessions to know. They might work for a week, maybe a month, then fizzle out. Or worse, they don't deliver consistent power, leading to exactly the problem you're having. I always recommend using the original Apple cable if you can, or at least a certified MFi (Made for iPhone) one. You'll spot the "Made for iPhone/iPad/iPod" logo on the packaging. Brands like Anker, Belkin, and Native Union usually do a decent job; I've used their stuff for years. I keep a few spares in my workshop, all good quality, just for testing my various bits of kit. Sometimes a cable just wears out, too. Fraying near the connectors is a dead giveaway, but sometimes the breaks are internal. Give your cable a good look-over. If it's seen better days, try a different one if you have one handy. If you're still using that tired old cable that came with your iPhone 7, it might just be time for an upgrade. You can pick up a decent MFi cable for a tenner or so. #### The Power Adapter: Is It Powerful Enough? Similar to cables, not all chargers are built the same. If you're using a weak adapter, say, one designed for an old flip phone from 2005, it might not be putting out enough juice to charge your iPhone effectively, especially newer models. They draw more power, particularly the Pro models. A little 5W cube that struggles to keep an old iPhone SE topped up definitely won't be doing the business for a new iPhone 14 Pro Max. I've got a few multi-port chargers here for all my various bits of test gear, and you quickly learn which ports are fast and which are just trickle chargers. Make sure your adapter matches your phone's needs. Modern iPhones (since the iPhone 8) can fast charge, needing at least an 18W USB-C power adapter (though 20W or 30W is better for the newer ones). If you're using an old USB-A adapter, it's likely only 5W or 10W. That might show "charging" but just can't pump enough power in to actually *increase* the percentage while the phone is awake, or even when asleep if the battery is particularly low or old. Try a different, more powerful adapter. Borrow one from a mate, or splash out a bit – a decent 20W USB-C adapter from a reputable brand will set you back about £20-£25. Well worth it. #### The Power Source: Wall Socket vs. Computer vs. Car Where are you plugging it in? A wall socket using a dedicated power adapter is generally the most reliable. Charging from a computer's USB port, especially an older one, can be slower and less powerful. Some USB ports on laptops barely put out enough power for basic data transfer, let alone charging. Same goes for car chargers – some cheap ones are woeful. I had a rubbish one in my old Transit van that took about 5 hours to add 10% to my phone. Pointless. Try a different wall socket, too. Just in case the one you're using is on the blink, though that's less common. ### The Pesky Port: Lint, Dust, and Debris Right, if you've swapped cables and chargers and tried different sockets, and you're still stuck, it's time to look at the phone itself. And usually, the first place to check is the charging port. This is a big one, happens all the time. Think about it: your phone lives in your pocket, your bag, on dusty workshop benches (mine certainly does!). Over time, all sorts of fluff, lint, dust, and general crud gets crammed into that little Lightning port. It compacts down, making it look almost like part of the port itself. This buildup can stop the cable from making a proper, full connection to the charging pins inside. When the cable isn't fully seated, it might make *some* contact, enough for the phone to register "charging," but not enough for a robust power transfer. It's like trying to drink a pint through a straw that's mostly blocked – you'll get a bit, but not the full flow. You'll see the charging icon, but the actual electrical current simply isn't getting through properly to charge the battery. #### How to Clean It (Carefully!) This needs a delicate touch. You don't want to damage those tiny pins. I use a wooden or plastic toothpick, or a very fine, non-metallic tool. A SIM ejector tool is too blunt and metallic; you could short something. A plastic dental floss pick can work too. The key is to be gentle. Gently scrape along the inside bottom of the port, then along the sides. You'll be amazed at the amount of compressed lint that comes out. I've seen phones practically cough up half a jumper's worth of fluff. Once you've dislodged it, give it a puff of air (don't blow directly into it with your mouth, as moisture can be a problem; use a can of compressed air if you have one, but be careful not to use it too close or too hard as that can damage things too). After a good clean, try plugging your cable in again. Does it click in more securely? Does it feel like it goes in further? If so, you might be onto a winner. ### Software Glitches: A Quick Reboot Can Work Wonders Sometimes, it's not a physical problem at all. Software can be a bit… temperamental, can't it? Just like your old PC playing up, an iPhone can sometimes get its wires crossed, metaphorically speaking. A simple software glitch can cause the phone to misreport battery status or mishandle charging protocols. #### The Restart/Force Restart Method Before you dive into anything more drastic, try a good old-fashioned restart. Turn your iPhone off completely, wait 30 seconds, then turn it back on. This clears out temporary software hiccups. If that doesn't work, a force restart can sometimes be more effective. The method varies by model: * **iPhone 8 or later (including iPhone SE 2nd and 3rd gen, X, XS, XR, 11, 12, 13, 14, 15 series):** Press and quickly release the Volume Up button. Press and quickly release the Volume Down button. Then, press and hold the Side button until you see the Apple logo. * **iPhone 7 or iPhone 7 Plus:** Press and hold both the Volume Down button and the Sleep/Wake button at the same time. Keep holding them until you see the Apple logo. * **iPhone 6s, iPhone 6s Plus, or earlier (including original iPhone SE):** Press and hold both the Sleep/Wake button and the Home button at the same time. Keep holding them until you see the Apple logo. Once it's rebooted, try charging again. Sometimes, that's all it takes. I've sorted more than a few odd tech gremlins with a simple power cycle. It's the first thing I do when something electronic starts playing up. ### Battery Health & Optimised Charging Right, let's talk about the battery itself. iPhone batteries, like all rechargeable batteries, degrade over time. After a few years, or hundreds of charge cycles, they just don't hold as much charge as they used to. Even if your phone *is* charging, if the battery health is poor, it might not seem like it's gaining much percentage, or it might drop quickly once unplugged. Go to `Settings > Battery > Battery Health & Charging`. Look at the "Maximum Capacity" percentage. If it's well below 80%, say 70% or less, then your battery is probably on its way out. You might even see a message recommending a "Service" for the battery. A knackered battery can also mess with how the phone reports its charge, leading to the situation you're seeing. #### Optimised Battery Charging Apple introduced a feature called "Optimised Battery Charging" to prolong battery lifespan. What it does is learn your daily charging routine and, when you charge overnight, it holds the charge at 80% and only finishes charging to 100% just before you usually wake up. This reduces battery ageing. If you plug your phone in during the day and expect an instant 100% charge, this feature might make it seem like it's not charging past 80%. You can disable it temporarily in `Settings > Battery > Battery Health & Charging` to see if that's the cause. If it is, consider leaving it on – it's good for the long-term health of your battery. ### Is it a Heat Issue? If your iPhone gets too hot, it will deliberately slow down or stop charging to protect the battery and internal components. This is a safety feature, not a fault. Are you charging your phone under a pillow, in direct sunlight, or while running really demanding apps? Take it out of its case, close any heavy apps, and let it cool down for a bit. Once it's at a normal temperature, try charging again. I've had old laptops overheat and refuse to charge until they've cooled down; phones are no different. ### Compare It: Cables, Chargers, and Ports Let's lay out the common issues and their usual remedies in a simple table. This might help you quickly pinpoint where your problem lies. Sometimes seeing it all in one place makes it clearer. | Component Issue | Signs You'll See | What To Do | Price to Fix (Approx.) | |:-----------------|:-----------------|:-----------|:-----------------------| | **Faulty Cable** | Frayed wires, loose connection, intermittent charging, works with some wiggling. | Try a different, certified MFi cable. | £10-£25 | | **Weak/Faulty Charger** | Slow charging, phone stays at same percentage, hot charger unit. | Use a more powerful (20W+), reputable brand adapter. | £20-£35 | | **Dirty Charging Port** | Cable feels loose, doesn't click in fully, visible lint/debris inside. | Carefully clean with a non-metallic toothpick. | £0 (DIY) | | **Software Glitch** | Sudden onset of problem, no physical damage, solved by reboot. | Restart or force restart your iPhone. | £0 | | **Bad Battery Health** | Max capacity <80%, "Service" message, quick drainage after charging. | Replace battery (Apple or authorised service). | £70-£100 | | **Overheating** | Phone feels hot to touch, charging stops or slows significantly. | Let phone cool down, remove case, stop intensive tasks. | £0 | ### If All Else Fails: Factory Reset or Professional Help If you've gone through all the steps above – changed cables and chargers, cleaned the port, rebooted, checked battery health, and ruled out overheating – and you're still facing the same issue, then it might be time for more drastic measures. This is where you need to weigh up the cost of repair against the cost of a new phone. #### Factory Reset (Last Resort for Software) Before considering hardware repair, a factory reset can rule out any deeply ingrained software issues. **Back up your iPhone first!** Seriously, back everything up to iCloud or your computer. A factory reset will wipe all your data. Once backed up, go to `Settings > General > Transfer or Reset iPhone > Erase All Content and Settings`. After it's reset, set it up as a *new* iPhone (don't restore from backup immediately, in case the backup contains the glitch). If it charges fine as a new phone, then you know it was a software issue, and you can try restoring your backup. If the problem reappears after restoring, then the glitch is in your backup, and you might have to bite the bullet and set it up from scratch again. #### When to Seek Professional Repair If even a factory reset doesn't sort it, then it's almost certainly a hardware problem. This could be a deeper issue with the charging port, the charging IC (integrated circuit) on the logic board, or the battery connector itself. At this point, I'd recommend taking it to an Apple Store or an authorised Apple service provider. You could try an independent repair shop, but make sure they're reputable and use genuine Apple parts where possible, especially for battery replacements. Some third-party repairs can mess things up further, or use dodgy components that cause more problems down the line. It's worth getting a quote. If the repair is going to be £200-£300+ and your phone is already a few years old, you might be better off putting that money towards a new or refurbished model. Sometimes you've just got to admit defeat and move on. I've had to do it with perfectly good-looking speakers that just weren't worth the cost of new drivers. ### FAQ: Getting Your iPhone Back to Full Power **Q: My iPhone charges slowly, but it *does* charge. Is that the same problem?** A: Not exactly the same, but many of the culprits are similar. A weak cable, a low-power adapter, a dirty port, or an old battery can all cause slow charging. Start with checking your cable and adapter – ensure they're MFi certified and powerful enough (20W+). Cleaning the port can also help immensely. **Q: How often should I clean my charging port?** A: There's no strict rule, but if you work in a dusty environment, or you regularly carry your phone in a pocket full of lint, it's a good idea to check it every few months. If you notice the cable not seating properly, or charging issues begin, that's your cue to grab a toothpick. **Q: Can using non-Apple chargers damage my iPhone?** A: Cheap, uncertified chargers and cables can absolutely damage your iPhone. They might not regulate power correctly, leading to overheating, slow charging, or even frying your phone's charging circuit. Stick to Apple originals or reputable MFi-certified brands like Anker, Belkin, RavPower. Don't skimp on these; it's not worth the risk to your £800+ phone. **Q: My phone charges with a wireless charger, but not with a cable. What does that mean?** A: This is a strong indicator that the issue is specific to your Lightning port or the components directly connected to it (like the charging IC for wired charging). Since wireless charging bypasses the physical port entirely, if that works, it points away from a battery problem and directly towards a wired charging component failure. Definitely clean the port thoroughly, but if that doesn't work, it's likely a hardware fault in the port itself or the charging circuit, requiring professional repair. **Q: What's the ideal "Maximum Capacity" percentage for my iPhone battery?** A: When new, it should be 100%. Apple generally considers a battery to be performing normally above 80%. Once it dips significantly below 80%, you'll likely notice reduced battery life, and the phone might struggle with peak performance. This is when Apple starts recommending a service replacement. ### Final Word: Patience and a Good Cable Are Key Look, it's never fun when your tech acts up, especially something as essential as your phone. But nine times out of ten, these charging woes are down to something fairly simple and easily fixed. Don't panic. Start with the easiest, cheapest fixes first – a different cable, a better charger, a clean port. You'd be surprised how often that sorts it out. I've saved myself and countless mates a few quid over the years by just going through these basic troubleshooting steps. If you've given it a proper go and it's still playing silly beggars, then yes, it might be time for a professional. But at least you'll have done your homework and can walk into the repair shop knowing you've exhausted all the sensible options. And next time, maybe skip that £2 cable from the market, eh? Your phone – and your wallet – will thank you for it. Keep those speakers banging, and your phone charging! Cheers.