The malfunction that is preventing an Android phone from charging falls along a short chain, which includes the wall socket, charger, cable, phone port, or battery. You can track down the faulty link by swapping out one component at a time and monitoring how the phone behaves before spending money on a replacement. Similarly, the official troubleshooting page from Google also follows this approach. For example, it suggests that you charge another device using your adapter and cable, try different wires or adapters, and look in the phone’s port for any dust or lint.
Charging icons are often misleading, because as Android Authority describes, “any item that draws power will diminish [the battery’s] ability to reach full charge.” Each manufacturer also has different menus. The examples below are from Google and Samsung’s own support sites and may not represent all the menu items on other brands; therefore, you may need to search through your Settings app to find something similar to the example below. One rule applies universally: you should never insert any metal object into the charging port. The first place to start troubleshooting your device is to complete the lint that could be obstructing the bottom of your port and making it difficult for you to charge your device.
The “Wiggle” Problem: Clearing Pocket Lint Safely
If your phone only charges when you position the cable at an angle or if it only charges while you hold the cable in a certain position; the first thing you should check is whether there is dirt trapped inside your phone’s charging port. T-Mobile’s charging guidelines identify both a dirty port or a faulty charging cable as possible causes of having to “hold your charging cable at a certain angle.” iFixit explains how it happens: dirt, lint, or other foreign objects are trapped inside the charging port after they are repeatedly compressed when the phone is being charged.
This is likely the reason why you can get your phone to charge by moving your charging cable back and forth. This explanation, while not explicitly tested, is based on the premise that angling the charging plug may help push down on the internal electrical contacts to make contact with the port contacts even though dirt is keeping the charging plug from seating fully. To check this for yourself, you will need to examine your charging cable. Once you are able to connect your charging cable, the top of the charging plug should be level with the bottom of the phone. If there is any misalignment between the two, or if there is still metal exposed, then the charging port should be cleaned. Additionally, according to Samsung’s support page, dust and debris may cause the charging port to become blocked for safety reasons. In other words, it is possible your phone was intentionally not allowing you to charge your device.
Before starting the cleaning process of any device, the primary precaution to take into account is what iFixit warns regarding the risks of damaging the metal pins inside the device. According to them, there is a risk of “electrical damage” occurring if you inadvertently bridge these pins together. Therefore, items such as needles, safety pins, paper clips and SIM ejector tools are not suitable tools for cleaning. The following steps represent the most gentle method through to the most invasive method; after each step, the device should be plugged in and examined for a flush fit.
- Turn the phone off. T-Mobile’s cleaning steps start this way, so you aren’t working on a live port.
- Shine a torch into the port. iFixit’s port-cleaning guide starts with a flashlight check for blockages. If you see burn marks or green or white corrosion, iFixit says to skip cleaning and treat it as a damaged port, which the last section covers.
- Tap it out. Google’s Pixel help suggests holding the phone with the port facing down and tapping it gently against your hand to remove debris.
- Use air, not your breath. iFixit’s guide says to put a dust blower or compressed air nozzle at one corner of the port and give a few puffs. It also warns against blowing with your mouth, because moisture from your breath can damage the contacts.
- Brush it gently. The same guide suggests a dry toothbrush, with the bristles around the small black tab in the middle of the port, turned in small circles to break up clumps. A dry wooden or plastic toothpick, which T-Mobile recommends, can lift out a stubborn wad if you go slowly and don’t lever against the middle tab.
When discussing liquid cleaning methods, there is much disagreement amongst the sources. iFixit’s last cleaning suggestion involves using a very thin swab with a few drops of isopropyl alcohol (greater than 90% concentration) and allowing it to dry prior to plugging the device back in. T-Mobile, on the other hand, does not recommend using any liquids in the cleaning process. Therefore, liquid cleaning methods should only be attempted after all of the previous dry cleaning methods have failed; moreover, never use water in cleaning any device.
If you now experience a flush button click and the device is charging properly without needing to be held, you have located the problem. If the button continues to feel loose following a thorough cleaning, iFixit says the port itself may have loose connections. If the button clicks properly, yet the device continues to fail to charge, there is likely a more serious problem within the charging system beyond the button/power connection.
The Swap Test: Isolating the Cable, Brick, or Socket
For charging to happen, every connection must be functional: the socket must properly connect to the charger, the charger must connect to the cable, the cable must connect to the port, and the port must connect to the battery. If any one of those elements has a poor connection, then you won’t be able to charge your phone. Therefore, guessing which piece of hardware is faulty is a very expensive way to diagnose the problem. If you replace both the cable and charger and the phone starts charging, you still don’t know whether the issue was with the cable or the charger, or even if they both were faulty. Keeping track of each part that you have tried and the outcome allows you to replace only the part or parts that you are certain will resolve your charging issue.
An example of this lack of discipline is an old forum post on Android Central where a member noted that they have “tried several chargers and a new battery,” yet were still unsure if the logic board was failing, if the charging port was damaged, or if there was a software issue. Although this thread was created in 2015 regarding an older micro-USB Samsung phone, the confusion described in it demonstrates what can happen without keeping a written log.
Get three things right before you start. First, “known-good” means a cable or charger that charges another phone properly right now, not one from the drawer that you hope works. Second, test at the wall. iFixit and Android Authority both say laptop and car USB ports often don’t deliver enough power, and T-Mobile advises plugging straight into a wall outlet instead of a surge protector or extension cord. At home, that means taking the extension box out of the test. Third, stop testing any cable or charger that’s frayed, cracked or burnt. Google’s Pixel guidance says to stop using a cable that looks damaged, and iFixit notes that damaged or low-quality chargers can cause battery damage or even fire.
Watch what shows up on your screen during every step. If you receive a “Check charging accessory” notification, according to Google, this means “Your cable or adapter may be damaged or is not supported by your phone.” This can cause your phone to charge very slowly or sometimes not charge at all. This notification is important evidence that needs to be noted. Google says a “Check charging accessory” notification means your cable or adapter “may be damaged or not supported by your phone,” which can make the phone charge very slowly or not at all.
| Step | What you change | What stays the same | Record in your log | If the phone now charges normally |
|---|---|---|---|---|
| 1. Baseline | Nothing: your usual socket, charger and cable | — | Icon shown? Percentage after 10 minutes? Any notification? | — |
| 2. Socket | Plug into a different wall socket, with no extension box | Your charger and cable | Same three observations | Your first socket, or the extension box, was the problem |
| 3. Charger | Swap in a known-good charger | Your cable, the socket that works | Same three observations | Your charger was the problem |
| 4. Cable | Swap in a known-good cable | Known-good charger and socket | Same three observations | Your cable was the problem |
| 5. Port bypass | Try a wireless charger, if your phone supports it | — | Does it charge wirelessly but not with a cable? | Points to the port rather than the battery |
With step 5, both iFixit and T-Mobile recommended using wireless charging to test the connection to your phone because it bypasses the port altogether. In addition, if you have a Samsung device, there is another way to check if the charging problem is with the charger, the cable or the battery. The Samsung support page describes the Phone diagnostics test that can be run via the Samsung Members app which includes separate tests for Cable charging, Wireless charging and Battery status and is designed to determine the source of any problem.
A slow charging device doesn’t necessarily mean it’s defective. As Android Authority explains, there are types of chargers that will only charge newer devices at the slower speeds (charging typically being from 18 watts – 65 watts) associated with older technology used in older models. iFixit adds that while there are some inexpensive chargers that claim to be fast chargers, they do not provide fast charge speeds when connected to newer phones. If you’re experiencing slow charging, check the wattage rating of your charger before assuming it’s defective.
Once your log is filled in, work through it like this:
- It charged after one swap. The part you swapped out is the faulty one. Replace only that part, then run the baseline again with the new part to confirm.
- Nothing changed with any swap, but it charges wirelessly. The external chain and the battery are working, so the wired path into the phone is the suspect. Go back to cleaning once more, then see the port signs in the last section.
- The icon appears in every test but the percentage barely moves or falls. The phone is getting power but using it as fast as it arrives, or a setting is holding it back. The next section covers this.
- Nothing works: no icon, no wireless charging, not even a red light. The problem is likely inside the phone. Go straight to the last section.
“Plugged In” But Not Rising: Software and Power Draw
iFixit explains that if your phone is in charge mode but not charging at all, there’s power reaching your phone but that power isn’t going into the battery. If your phone uses a lot of power, you’ll probably notice that it charges very slowly — or maybe not at all because “the charge rate and power consumption rates are very close to one another” and the phone may also get very hot while you’re using it. T-Mobile’s list of causes for this symptom includes Background Apps, a low-wattage charger such as an old USB port, and over-heating.
The easiest way to test this will not require any setting changes at all. Simply close any apps you may have upon your device, lock your screen, lay your phone down on a cool spot on a good quality charger, like the one you normally use, and plug it into a wall outlet. Leave it here for at least 20 minutes. If the percentage rises when you’re not using the device, that means that the charger is functional, and you’re using the device faster than the charger can provide the energy. Android Authority indicates that using the device while charging, notably while playing games, will decrease charging speed and increase the heat produced while charging.
If your device stalls without any interaction, it may be caused by an app that is consuming too much battery. To determine which app is draining the battery on a Pixel 8a running Android 16, follow the steps on Android Authority: First, go to Settings and select Battery. Then select Battery usage. Once you see the list of applications and how much battery they are using, look for any applications that are using more than they normally would. If an application is consuming more than it normally would and is a system application, change the View by apps menu to View by systems and check the system tasks. If you started experiencing this issue recently and haven’t changed anything else, iFixit suggests checking your most recent app updates. To do this, open the Play Store and select the profile icon at the top right corner of the screen. Next, select Manage apps & devices from the list. Then, open the Manage tab and select Recently updated from the Sort by drop-down menu. If you see the app that is using too much battery on both lists, that is most likely your culprit.
Heat is another major cause of stalling. According to Android Authority, phones automatically slow down their charging rate to protect themselves from becoming too hot. Samsung says that if your phone or the area around your phone is too hot or cold, it may limit the maximum charging speed of your phone. Google recommends charging your Pixel phones when the environment temperature is approximately 25°C (77°F) or cooler. If your phone is being charged in direct sunlight, under a pillow or in a hot car, it may be purposely pausing while charging.
If the percentage always stops at the same number, check for a charge limit before blaming the battery. On Samsung Galaxy phones, Samsung’s Protect battery feature is under Settings > Battery > Protect battery. It’s off by default, limits charging to 85% when turned on, and shows “Charging paused. Protect battery limits you to 85%.” On Pixel 6a and later, Google’s Limit to 80% option is under Settings > Battery > Battery health > Charging optimisation. Pixels also limit charging to about 70–80% on their own after hours of charging in high heat or several days of constant charging. You’ll see a “Protecting your battery” notification, and there’s a Charge to full link in the Battery settings to override it. On other brands, iFixit suggests looking in battery settings for something called Hold Charge or Battery Protection.
Only restart the phone after checking to see whether or not it is set to a charge limit. Although performing a restart is helpful, it will not provide any diagnostic assistance. Google’s instruction is to press and hold the Power button for five to seven seconds. When performing a soft reboot on a Samsung, Samsung says to press and hold the Power and Volume Down buttons together until the phone restarts. Note that the location of these buttons may differ slightly by model.
The factory reset represents the final software opportunity with a smartphone and should be approached with a great deal of caution as it will completely delete all of your content, so be sure to create backups for your photos, conversations and data prior to doing so. According to Android Authority, if you perform a full device wipe and notice that the device continues to charge very slowly, it could indicate an issue with its components instead of software related issues. If you are unable to create backups, it is best to forgo performing a factory reset and have your device’s hardware diagnosed by a professional first.
Signs of Battery or Port Failure
After determining that there are no issues with the external connection between the phone and accessory chargers and ruling out any potential defects or problems with any of the accessories themselves, the next step in troubleshooting the phone charger is to inspect the internal connection. The most obvious signs of a damaged or failing connection will be visible evidence within the phone. According to the iFixit guide, if there is visual indication of heat or damage to the charging connection, or if you have performed a thorough cleaning of the charging connection, or if it was already free of debris and dirt, and the charging connection still seems to be loose and requires constant re-positioning, then it is possible that the internal charging connection may be defective. Based upon your swap log and the fact that your phone is able to charge wirelessly, but is unable to charge using several confirmed working charging accessories through a clean connection, you are correct to conclude that the problem is with the phone and not the battery. This conclusion is based upon your testing and can be confirmed by a technician using a USB ammeter, which is referenced in the iFixit guide for measuring the power being delivered through the charging connection.
In regards to the solution, it is dependent on the type of phone you own. The iFixit guide points out that certain types of phones will have their charging connections located on a separate soldered connection board that can be easily replaced, whereas other types of phones will have their charging connections soldered onto the main board and require a trained technician to replace them. Android Authority cautions that if you need to replace your charging connection, you should first check to see if your phone is still under warranty or has insurance coverage, because replacing a charging connection can be both a complicated and costly repair. Since this guide is not able to provide verified repair prices for the Nigerian marketplace, you should obtain a quote from the repair service prior to authorizing the service to begin any work on your device.
Battery wear is easiest to check via a device that is reporting it. The Google battery page for Pixel 8a or later is located under Settings > Battery > Battery Health, and its status will indicate “Normal” or “Reduced” (meaning that the battery has less than 80% capacity). Google recommends replacing the battery when it is “Reduced”. The cycle count is found in “About Phone > Battery Information“. Google states that a fully charged Pixel 8a or later will maintain about 80% capacity for up to 1,000 cycles, and for a Pixel 3 through Pixel 8 Pro will maintain about 800 cycles. As for Pixel 6a, 7, 7 Pro, 7a, 8, and 8 Pro, the battery health status is not shown, so the absence of this menu on these models does not indicate any issue with it. For Samsung, “Samsung Members > Phone Diagnostic Test” (via Support, Get Started, then Tap, Battery Status) rates the battery as Normal, Weak, or Bad. If a Samsung battery is rated as Bad, the recommendation for it is to be taken to a service centre. For Other Brands, iFixit suggests looking under Battery for Battery Health or Battery Status section should provide the information needed.
When a phone appears to be completely dead, a flat battery may actually be the cause. Google says to charge the phone with a functional cable, charger, and outlet for one minute. If the light is red, the battery is fully discharged. If the light is blinking, the phone does not have enough power to turn on yet. For this reason, wait at least 30 minutes after connecting the device to power to restart. If there is no battery icon or light does not turn on, Google suggests that the issue may be with the screen.
If your battery begins to swell, you need to stop diagnosing the issue. There are several signs of a swollen battery according to iFixit: the casing may no longer fit on your phone; there’s a gap between the screen and the body; the buttons don’t work properly anymore – stiff or hard to push (sticking); squishy feel to the phone; or a chemical “sweet” smell, like burning metal or acetone. iFixit strongly recommends not charging or using devices with swollen batteries. Google’s guidance on this is considerably less alarming: while swelling of a battery doesn’t represent an immediate safety risk, it will certainly allow moisture and dust to enter through a gap due to an unprotected/unsupported (exposed) battery and may cause overheating that can lead to serious injuries. iFixit and Google have several procedures that you should never do with your device after you notice a swollen battery. They recommend against pressing down on your screen, opening up your phone, performing any battery repairs yourself and throwing your device away in regular garbage. The proper course of action is to take it to an authorised service centre; you should bring your swap log so the technician knows what you’ve already eliminated.
If It’s Still Not Working
If, after doing the swap test with known-good parts, a clean connector port and a silent battery settings screen, your phone still does not function, then there is definitely a problem inside the device, and it will need to be taken to an authorized service center for repair. One of the best things you can provide the technician with is your written log. This should include every charger socket and cable that you tried, as well as the corresponding reaction of your phone to each charger socket and cable that you used. This will help the technician diagnose the issue with your phone more efficiently than if no log was provided and will also help ensure that you do not get charged for a new battery if the problem was actually caused by the charging connector port being defective, or for a new connector port if the problem was caused by a cheap ₦ cable that you could have changed yourself.
Frequently Asked Questions
What does “Liquid or debris in USB port” mean on my phone?
Google says the phone detected moisture or other debris within the phone’s charging port and halted connections until you have addressed the issue. Disconnect the charger from the device and, if your device has wet electrical connections inside of it, please turn off the device immediately and allow it to sit at room temperature until its charging port has fully dried out. If the moisture alert persists for more than two hours, please contact Google Support.
Can I blow into the charging port to clear it?
According to iFixit, “Moisture from the breath can also lead to corrosion on the port connections.” iFixit warns that this can damage the port’s contacts. Therefore, gently tapping the phone on your palm (with the charging port facing downward) or cleaning it with a compressed air blower directed toward one corner will usually help alleviate this issue.
Are apps like AccuBattery useful for this?
“IFixit mentions AccuBattery and Ampere as great applications to monitor charging rates and battery health. Having these types of applications will allow you to add additional data points to your swap logs. If your phone has a built-in battery health display, use those as well.”
