iPhone (7 or 11) Won’t Charge Or Turn ON Solutions
By Robert Jones · 2022-07-17
Got an iPhone 7 or 11 that's gone quiet, refusing to charge or turn on? Don't despair just yet. Robert Jones here, and I've seen enough dead tech to know a few tricks to get your phone back on its feet.
Right, so you've got an iPhone, probably an old 7 or 11, and it's gone belly up. Won't charge, won't turn on. Frustrating, isn't it? Happens to the best of us, and while I spend most of my days fiddling with crossovers and impedance, even I've had my fair share of dead phones. It’s like a silent speaker; you know it *should* be working, but it’s just… not. ### **Quick Verdict:** **Most iPhone charging and power issues are simple fixes, but don't rule out a faulty battery or port.** ### Who it's for: * Anyone with an iPhone 7 or 11 that's not charging or turning on. * DIY types who want to try fixing things before spending money. * Folks looking to squeeze a bit more life out of an older phone. ### Who should skip it: * Those who are already planning to upgrade their phone. * Anyone uncomfortable with basic troubleshooting. * If you've already tried everything and suspect serious internal damage.  *iPhone (7 or 11) Won’t Charge Or Turn ON Solutions — tested in the SpeakersMag workshop.* ## The Dreaded Black Screen: What's Going On? I've seen countless bits of kit, from monstrous subwoofers to tiny tweeters, just refuse to play ball. And phones are no different. When your iPhone just sits there, blank, like it's given up the ghost, it’s usually one of a few things. It’s rarely catastrophic, mind, but it can feel like it at the time. You think, "Bloody hell, that's a new phone I need to buy," when often, it's a simple fix. Most often, it's down to the power delivery. Just like a good amplifier needs a clean, steady supply of juice, your iPhone does too. Anything interrupting that, be it a dodgy cable, a clogged port, or even just a software hiccup, and you're left with a brick. So, let's start with the easy stuff, the low-hanging fruit, before we start thinking about sending it off for repairs or, god forbid, buying a new one. ## First Things First: The Obvious Culprits Before you start tearing your hair out or booking an appointment at the Apple store, let's tick off the really simple things. You'd be surprised how often it's something daft. ### 1. The Charger and Cable Conundrum Right, hands up if you've got a drawer full of old phone chargers and cables. Yeah, thought so. I'm the same with speaker wire offcuts. The thing is, not all cables are created equal, and they don't last forever. That cheap knock-off lightning cable you picked up for a quid from the market? Probably the first thing to suspect. * **Swap it out:** Always, always try a different cable first. Grab one you *know* works, perhaps one from another Apple device, or a friend's genuine one. I've seen plenty of charging issues resolved by just getting rid of a frayed, unreliable cable. It's the most common problem, honestly. * **The Power Brick:** Don't forget the wall plug, either. Just because it powers your old Kindle doesn't mean it's delivering the right current for your iPhone. Try a different power adapter, ideally one that came with an Apple device or a reputable third-party one. I keep a few known-good plugs and cables in the workshop just for testing, saves a lot of head-scratching. * **Wall Socket Woes:** And yeah, while we're at it, try a different wall socket. Sounds daft, but I've known plenty of people spend ages debugging something only to find the socket was dead. Happens. ### 2. The Mighty Hard Reset This is the phone equivalent of turning your amp off and on again when it's crackling. It sounds too simple, but it clears out any software glitches that might be stopping your phone from recognising power or even just booting up. It won't erase any data, so don't fret about that. * **iPhone 7:** Press and hold the **Volume Down** button and the **Power button** (on the right side) simultaneously. Keep holding them until you see the Apple logo appear. This might take 10-20 seconds. Don't let go until you see that logo! * **iPhone 11 (and newer):** This one's a bit different. Quickly press and release the **Volume Up** button. Then, quickly press and release the **Volume Down** button. Finally, press and hold the **Side button** (that's the power button on the right) until you see the Apple logo. This sequence needs to be fairly quick, so practice a couple of times if you're not getting it. If it works, fantastic! If not, don't despair. We've only just started. ## Diving Deeper: Inspection and Cleaning Okay, so the easy stuff didn't work. Now we get a bit more hands-on. Your phone's charging port is a magnet for all sorts of crud, especially if you carry it in your pocket or a bag all day. Think of it like a clogged speaker port – air can't move properly, sound gets muffled. Same principle, but with electricity. ### 3. Clean That Charging Port! This is a big one. I've seen iPhones declared dead only to spring back to life after a good clean. Pocket lint, dust, bits of biscuit – it all gets rammed in there and stops the charging cable from making proper contact. It's a tiny, fiddly job, but worth it. * **The Right Tool:** Forget metal paperclips; you'll damage the pins. Grab a non-conductive tool. A wooden toothpick is perfect, or a plastic dental pick. Something thin, stiff, and non-metallic. * **The Method:** Gently, and I mean *gently*, scrape out any gunk from the charging port. You'll be amazed what comes out. Shine a torch in there if you can to get a better look. Be careful not to bend or break any of the tiny pins inside. That's proper repair shop territory if you do. * **A Blast of Air:** Once you've scraped, a quick blast of compressed air (from a can, not your breath!) can help dislodge anything stubborn. Hold the can upright to avoid moisture. Don't stick your mouth on it and blow; you'll just get spit in there. After cleaning, try plugging it in again and see if the charging symbol appears or if it boots up. Sometimes, it just needs a good connection. ### 4. Inspect for Damage While you're poking around, give the phone a quick once-over. Look for any obvious signs of physical damage: * **Water Exposure:** Check the Liquid Contact Indicators (LCIs). On an iPhone 7 or 11, these are tiny white stickers that turn red when they come into contact with water. On the iPhone 7, the main one is inside the SIM tray slot. On the 11, there are a few, including one in the SIM slot and another in the headphone jack (if it still had one, which the 11 doesn't, but you get the idea for older models). If they're red, water's probably involved, and that's a whole other can of worms. * **Port Condition:** Are the pins inside the lightning port bent or corroded? If they look mangled, that's likely your problem. You can try to *gently* straighten them with a toothpick, but this is risky. Best left to a professional if you're not confident. ## The Charging Ritual: Patience is a Virtue Sometimes, even with everything looking fine, a completely dead battery needs a bit of tender loving care to wake up. It's like trying to kick-start a car that's been sitting for months – it needs a bit more oomph. ### 5. Leave it on Charge (for a long time) If your phone was completely drained, it might need more than just a few minutes on charge to show any signs of life. Don't expect it to spring back instantly. * **Give it Hours:** Plug it into a *known good* charger and leave it for at least 30 minutes, ideally an hour or two. Some really depleted batteries need a good long soak to get enough charge to even show the charging symbol or turn on. I've seen some take an afternoon. * **Observe:** After an hour or so, check for the charging screen (a battery icon with a lightning bolt) or the Apple logo. If nothing, try the hard reset again while it's still plugged in. ## When Software Goes Rogue: DFU Mode If your phone is completely unresponsive, even to hard resets, and you've ruled out hardware issues like cables and ports, it might be a deeper software problem. This is where things get a bit more involved, but it's still something you can try at home before sending it off. DFU (Device Firmware Update) mode is like a super-deep reset. It allows you to restore your iPhone's firmware without loading the operating system first. Think of it as reinstalling the operating system on a computer from scratch. You'll need a computer (Mac or PC with iTunes/Finder) for this. **IMPORTANT: This will erase all data on your phone.** Make sure you've tried everything else first, and only proceed if you're willing to lose your data (unless you have a recent backup). ### Entering DFU Mode: * **Connect to Computer:** Plug your iPhone into a computer with iTunes (Windows) or Finder (Mac). * **iPhone 7 DFU Mode:** 1. With the phone connected and off (or pretending to be off), press and hold the **Side button** for 3 seconds. 2. Still holding the Side button, also press and hold the **Volume Down button** for 10 seconds. The screen should remain black. If you see the Apple logo, you've held it too long; start again. 3. Release the Side button but continue to hold the **Volume Down button** for another 5 seconds. Again, the screen should stay black. If you see the "Connect to iTunes" screen, you've held it too long. 4. If the screen remains black and iTunes/Finder detects a device in recovery mode, you're in DFU mode. * **iPhone 11 DFU Mode:** 1. Connect the iPhone to your computer. 2. Quickly press and release the **Volume Up button**. 3. Quickly press and release the **Volume Down button**. 4. Press and hold the **Side button** until the screen goes black (this can take 10-20 seconds). 5. Once the screen is black, continue holding the Side button, and *also* press and hold the **Volume Down button** for 5 seconds. 6. Release the Side button but continue holding the **Volume Down button** for another 10 seconds. 7. If the screen remains black and your computer detects a device in recovery mode, you're in DFU mode. Once in DFU mode, iTunes/Finder will prompt you to restore your iPhone. Follow the on-screen instructions. This downloads and reinstalls the iOS software. It's a bit drastic, but sometimes it's the only way to revive a truly stubborn phone. ## When All Else Fails: Hardware Headaches If you've tried everything above and your iPhone is still a lifeless brick, then it's likely a hardware issue. At this point, unless you're confident with micro-soldering (and who is, really, apart from dedicated repair techs?), it's time for professional help. Or, dare I say it, a new phone. ### 6. Battery Replacement Batteries don't last forever. After a few years, they lose their capacity and can even become completely unable to hold a charge, especially on older models like the 7 or 11. If your phone was showing signs of poor battery life before it died, this is a prime suspect. * **Symptoms:** Rapid discharge, phone shutting down unexpectedly even with charge, extreme slowdowns. * **Cost:** A professional battery replacement from a reputable shop (or Apple themselves) will usually be somewhere between £50-£100, depending on the model and where you go. Sometimes, this is worth it to get a few more years out of an otherwise perfectly good phone. I've seen plenty of decent bits of audio gear given a new lease of life with fresh components; batteries are no different. ### 7. Charging Port Repair/Replacement If you found damaged pins or corrosion in the charging port, or if you've tried cleaning it thoroughly and it still won't charge, the port itself might be faulty. These little connectors take a beating over time. * **Symptoms:** Intermittent charging, only charges if the cable is wiggled or held at a certain angle, no charging at all despite a good cable and power source. * **Cost:** A charging port repair can be a bit more involved than a battery, often ranging from £60-£120. Again, depends on the model and the repair shop. ### 8. Logic Board Issues This is the big one. The phone's main circuit board, where all the magic happens. If there's damage here, perhaps from a severe drop or water ingress, it can cause all sorts of problems, including complete power failure. Sometimes, specific components on the logic board related to charging (like the Tristar IC, a common culprit) can fail. * **Symptoms:** Phone completely dead, no response to anything, no charging indication, even after new battery/port. * **Cost:** Logic board repairs are significantly more expensive and specialised. They can range from £150 up to the cost of a new phone. At this point, you're often better off putting that money towards an upgrade, especially for an older iPhone 7 or 11. It's like trying to rebuild a blown amplifier from scratch; sometimes, it's just not economical. ## Preventative Measures: Keeping Your iPhone Alive As with any bit of kit, a little bit of care goes a long way. I've got speakers in my workshop that are decades old because they've been looked after. Your phone's no different. * **Good Cables & Chargers:** Invest in genuine or MFi-certified (Made For iPhone) cables and power adapters. They might cost a bit more, but they're safer and more reliable. That £2 cable from the petrol station is a false economy. * **Keep Ports Clean:** Make it a habit to periodically check and gently clean your charging port. A quick poke with a toothpick every few months can save a lot of grief. * **Avoid Extreme Temperatures:** Don't leave your phone baking in the sun on the dashboard or freezing in the shed overnight. Batteries hate extreme temperatures. * **Don't Drain it Completely:** Try not to let your phone die completely all the time. Keeping the charge between 20% and 80% is generally good for battery longevity. * **Proper Cases:** A good case can protect against drops, which can damage internal components, including the battery and logic board. ## Troubleshooting Table: Quick Reference | Issue/Symptom | Potential Cause | Quick Fix | Professional Help? | | :------------------------------------------ | :---------------------------------------------- | :----------------------------------------------------------------------------- | :---------------------------------------------------- | | **Won't charge, no power, black screen** | Dead battery, faulty cable/charger, dirty port, software glitch, logic board. | Try different cable/charger, hard reset, clean port, leave on charge for hours. | Battery replacement, port repair, logic board diagnostic. | | **Charges intermittently/only at angle** | Dirty/damaged charging port, faulty cable. | Clean port, try different cable. | Charging port replacement. | | **Shows charging but doesn't turn on** | Deeply drained battery, software issue. | Leave on charge for several hours, then hard reset. Try DFU restore. | Battery replacement. | | **Turns on but dies quickly/slow** | Worn-out battery. | Battery health check (if possible), try optimising apps. | Battery replacement. | | **Apple logo appears then disappears** | Software crash, deeply depleted battery, logic board. | Hard reset, DFU restore. | Battery replacement, logic board repair. | ## FAQ: Your Burning Questions Answered ### Q: Can a really cold iPhone refuse to charge or turn on? A: Yeah, absolutely. Batteries don't like the cold, and very low temperatures can temporarily stop them from working properly. Bring it indoors, let it warm up to room temperature for a good hour or two, then try charging and a hard reset. Don't try to warm it up quickly with a hairdryer, though; you'll just make things worse. ### Q: I only use genuine Apple cables. Can they still fail? A: Oh, without a doubt. Even the best kit can pack up. I've had £500 interconnects fail on me. Cables get bent, twisted, stepped on, and generally abused. Internal wires can fray, and the connectors can wear out. Always worth trying a different cable, even if your current one looks fine. ### Q: My phone got a bit wet, but it's working now. Should I still worry? A: You should be wary, definitely. Water damage can be insidious. It might work for a bit, but corrosion can slowly creep in and cause problems weeks or months down the line. Keep an eye on it. If it starts playing up, assume water damage is the culprit and get it checked by a pro. Better safe than sorry, as they say. ### Q: Is it safe to try DFU mode if I'm not tech-savvy? A: It's a bit more advanced than a simple hard reset, but it's generally safe if you follow the instructions carefully. The main risk is losing your data if you haven't backed up. If you're genuinely uncomfortable, don't force it. There's no shame in taking it to a professional. ## Final Word Look, nobody likes a dead iPhone. It's like having a speaker system that won't make a peep. But more often than not, the solution isn't as dire as you think. Start with the basics: check your cables, clean the port, and give it a good long charge. Most times, one of those straightforward steps will bring your faithful old iPhone 7 or 11 back from the brink. If not, then you've narrowed it down, and you know what to ask for when you take it to a repair shop. Don't just throw it away; give it a fighting chance. There's life in the old dog yet, usually.