How to Fix a Samsung Galaxy That Won't Charge
By Betterbuyclub: The Ultimate Solutions for Electronics, and ... | Published: 2026-10-21
Category: How-to Guides
A step-by-step guide to diagnosing and fixing charging issues on Samsung Galaxy phones, including the Galaxy A23 and S21 Ultra.
Quick Answer
Start by checking the charging cable and adapter, then inspect the phone's charging port for debris. If the port is clean and the accessories work on another device, the battery or charging IC may need professional repair.
Why Samsung Galaxy Phones Stop Charging
Charging issues on Samsung Galaxy phones often stem from a few common causes: a blocked or damaged charging port, a faulty cable or adapter, or a software glitch. Less common but possible are battery degradation or a failed charging IC. The good news is that most problems can be diagnosed at home without special tools.
If you own a renewed Samsung Galaxy like the A23 or S21 Ultra, the charging port may have accumulated lint over time. The Galaxy A23's long-lasting battery is great for daily use, but a dirty port can stop it from charging. Similarly, the Galaxy S21 Ultra's powerful 108MP camera won't help if the phone can't power on.
When to Consider Professional Repair
If you've cleaned the port, tried multiple cables and adapters, and the phone still won't charge, the issue may be internal. A faulty charging IC or a degraded battery often requires a repair shop. For renewed phones, check your warranty before opening the device.
Diagnosis Steps
- Symptom: The phone does not respond when plugged in, or it shows a charging icon but the battery percentage decreases. If the battery percentage drops while plugged in, the phone is using more power than it receives.
- Likely Cause: A blocked charging port, damaged cable, or faulty adapter. Less common: a software bug or failed charging IC. Start with the simplest cause: check the cable and adapter with another device.
- Corrective Action: 1. Try a different USB cable and wall adapter. 2. Inspect the charging port with a flashlight; use a wooden toothpick to gently remove lint. 3. Restart the phone in safe mode. 4. If none work, back up data and consider a factory reset. If the phone charges with a different cable and adapter, replace the original ones.
- Stop or Choose Another Option: If the phone still won't charge after cleaning the port and trying multiple cables/adapters, the issue is likely internal. Do not attempt to open the phone yourself—seek professional repair or contact the seller for warranty service.
Product Facts
- Samsung Galaxy S21 Ultra 5G, US Version, 128GB, Phantom Black (factory renewed): Versatile Photography: Capture high-quality stills directly from 8K video with just one tap. This feature is useless if the phone can't charge, so resolving the charging issue is the first step to unlocking its full camera potential.
Samsung Galaxy S21 Ultra 5G, US Version, 128GB, Phantom Black (factory renewed) - Samsung Galaxy A23 5G SM-A236U Factory Unlocked 64GB Black (factory renewed): Long-lasting Battery: Work and play longer with a… A long-lasting battery is a key benefit, but a charging problem can make it seem like the battery is failing. Proper diagnosis can save you from unnecessary battery replacement.
Samsung Galaxy A23 5G SM-A236U Factory Unlocked 64GB Black (factory renewed)
