Introduction: My Phone Started Charging Slowly
A few weeks ago, I noticed that my Samsung Galaxy M33 running Android 13 started charging much slower than usual.
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Plugged in at 10%, it would take almost 4–5 hours to reach full charge.
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The phone got slightly warm while charging, and notifications lagged.
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I initially thought the charger was faulty, but I wanted to see if I could fix it without buying a new charger.
After testing multiple solutions, I discovered several real fixes that worked, improving charging speed without spending money or changing hardware.
Step 1: Clean the Charging Port
Dust, lint, or debris in the charging port can prevent the cable from making proper contact, causing slow charging.
Steps I followed:
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Power off the phone.
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Use a soft brush or toothpick carefully to remove dust and lint.
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Blow lightly to remove remaining debris.
After cleaning, the phone connected better to the cable and charging speed improved immediately.
Step 2: Check for Cable and Charger Issues Without Replacing Them
Sometimes, cables or chargers may be partially faulty due to bends or wear, even if you don’t replace them.
Steps:
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Inspect the cable for fraying, kinks, or broken wires.
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Plug it into a different power outlet to rule out socket issues.
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Avoid charging through low-power sources like laptops or old power banks.
After doing this, the phone began charging faster, even with the same charger.
Step 3: Avoid Using the Phone While Charging
Using apps, games, or streaming videos while charging can slow down the charging speed, as the battery is being used while charging.
Tips:
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Avoid gaming or watching videos while plugged in.
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Check messages or notifications intermittently instead of running multiple apps.
I noticed a significant improvement in charging speed when I minimized phone use during charging.
Step 4: Enable Airplane Mode During Charging
Enabling Airplane Mode reduces background processes and network activity, allowing the battery to charge faster.
Steps:
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Swipe down and activate Airplane Mode.
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Charge the phone uninterrupted.
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Turn Airplane Mode off once charging is complete.
Charging in Airplane Mode reduced background battery drain and sped up charging noticeably.
Step 5: Disable Fast Charging Temporarily
Fast charging is convenient but can generate heat, which sometimes slows charging if the phone throttles to protect the battery.
Steps:
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Go to Settings → Battery → Charging
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Turn off Fast Charging if the phone heats up
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Allow the battery to charge at a normal rate until it cools down
I found that temporarily disabling fast charging allowed the battery to charge steadily and faster overall in some cases.
Step 6: Close Background Apps and Processes
Heavy background apps can consume power while the phone is charging, slowing down the charge.
Steps:
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Go to Settings → Apps → Manage Apps
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Close or restrict heavy apps like Instagram, YouTube, TikTok, or games
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Enable Battery Saver if necessary
After restricting background apps, my Samsung Galaxy M33 charged significantly faster.
Step 7: Charge in a Cool Environment
Heat affects charging speed. Charging in hot environments may cause the phone to slow down charging to protect the battery.
Tips:
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Charge in a cool, shaded area.
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Avoid leaving the phone on beds, pillows, or under sunlight.
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Keep ventilation around the phone while charging.
I noticed a clear difference in charging speed when I moved the phone to a cool, ventilated surface.
Step 8: Remove the Case While Charging
Phone cases can trap heat, making the phone warm up faster and slow charging.
Steps:
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Remove the case during charging
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Place the phone on a flat surface
Charging without the case reduced heat buildup and allowed the battery to charge faster.
Step 9: Update System Software and Apps
Outdated software can cause slow charging due to inefficiencies in managing battery and power.
Steps:
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Go to Settings → Software Update → Download and Install
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Update all apps via Google Play Store → My Apps & Games → Update All
After updating, the system handled charging more efficiently, resulting in faster charging times.
Step 10: Optional — Calibrate the Battery
Sometimes, slow charging is caused by inaccurate battery statistics. Calibrating the battery can help.
Steps:
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Fully discharge the phone until it powers off
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Charge uninterrupted to 100% using the original charger
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Repeat if necessary
After calibration, the phone showed more accurate battery levels and charged steadily.
Step 11: Avoid Wireless or Low-Power Charging
If your phone supports fast wired charging, avoid low-power USB ports or wireless chargers, which can slow down charging.
Tips:
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Use the official charger and cable
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Avoid laptops or old adapters with low output
Even with the same charger, ensuring the power source delivers adequate output improved charging speed.
What Changed for Me
Before applying these fixes:
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My Samsung Galaxy M33 took almost 5 hours to fully charge
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The phone felt warm and performance slowed while charging
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Notifications lagged slightly
After applying all the fixes:
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Charging time reduced to 2–2.5 hours from 10–15% to full
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The phone stayed cooler
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Background apps didn’t slow the charging process
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All this was achieved without changing the charger
Frequently Asked Questions (FAQs)
1. Can slow charging be fixed without a new charger?
Yes. Most slow charging issues are caused by software, background apps, heat, or dirty ports, which can be resolved without replacing hardware.
2. Does using Airplane Mode really help?
Yes. Airplane Mode reduces network activity and background processes, allowing faster charging.
3. Should I remove the case while charging?
Yes. Cases trap heat, which can slow down charging. Removing it keeps the phone cooler.
4. Does updating apps and system software affect charging?
Yes. Updates often include battery optimization and better charging management.
5. Is battery calibration necessary?
Only if battery statistics are inaccurate. Calibration can improve battery meter accuracy and charging behavior.
Wrap-Up
Slow charging doesn’t always mean the charger is faulty. Most slow charging issues are caused by:
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Dirty charging ports
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Heavy background apps
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Heat buildup from the environment or case
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Network and background activity
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Outdated system software or apps
On my Samsung Galaxy M33, Android 13, I fixed slow charging by:
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Cleaning the charging port
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Avoiding heavy phone usage while charging
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Using Airplane Mode or Battery Saver
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Removing the case and charging in a cool area
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Updating system software and apps
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Calibrating the battery
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Ensuring proper cable connection and power source
With these steps, the phone charged faster, stayed cool, and maintained battery health, all without changing the charger.