Oh no @lmantini1! I understand how frustrating it must be that your device isn't charging properly right now. Let's see if we can get this sorted for you.
First, inspect the device and charger. Verify that the phone, tablet, charger, and USB cable have no physical or liquid damage. If they do, it could prevent proper charging. Perform the following:
Check the USB connections for corrosion and bent pins.
If the device has recently gotten wet or if an alarm related to moisture in the charging port was displayed, wait 1 to 2 hours for the moisture to evaporate from the charging port. If any liquids other than water enters the device's charging port, you must rinse it in fresh water and dry it thoroughly with a dry, soft cloth.
If your device supports wireless charging, you can try charging it that way. Wireless charging is not affected by moisture or foreign materials in the charging port. Make sure to thoroughly dry the device before placing it on the wireless charger.
The USB cable should be secured firmly in the charging port of the device and charger with very little mobility.
Also check for liquid damage. To determine if the phone or tablet experienced liquid damage, you can check the Liquid Damage Indicator. The LDI is either inside the SIM card tray slot for newer devices or on the removable battery for older devices. To eject the SIM card tray, insert the ejector tool that came with your device into the hole on the SIM card tray. Next, push the tool until the tray pops out. Look inside the slot to access the LDI. Or, if you have a removable battery, you will need to take out the battery and inspect it. LDI indicators should be solid white or white with visible pink or purple X's. If the device has been exposed to moisture, the LDI will be solid pink, purple, or red.
Next, attempt to perform a soft reboot. Press and hold the Power button and Volumedown button simultaneously until the device restarts. This can take up to 60 seconds. If the device enters Maintenance Boot Mode instead of restarting, use the VolumeUp or Down buttons to highlight NormalBoot, and then select it by pressing the Side button or Bixby button.
Also, make sure your charger is authentic. Using third-party chargers may invalidate your warranty and cause damage. Samsung does not recommend using any chargers other than Samsung chargers, especially chargers that are uncertified or counterfeit. These can hinder the charging of your device and may cause battery issues if used long term.
Then charge your phone or tablet for at least 1 hour using the charging cable that came with it and an appropriate charger. It can take up to 10 minutes for the charging indicator to appear on the screen if the battery is completely drained, or if you've just gotten a new device.
Make sure to securely connect one end of the charging cable into the charging adapter, and then plug the adapter directly into a wall outlet. Do not plug the adapter into an extension cord or power strip.
If your phone or tablet still will not charge, visit our Support Center to request service. Thank you for posting, I hope this helps.
I asked Gemini why my S25+charging speeds are in the toilet following an update to OneUI 8.5, and it said this is a known issue with the update? I've been checking it and it'll get to to 5W here and there, but it's just so bad now. I drained the battery to 7% to be able to see how much it would take in when it would pull the most power, and I see... This. Just nuts.
This is on a 45W charger and a 3A cable, as the S25 series added a new profile that let it charge at full 45W speeds with even a 3A cable... and up until the update it was getting the full 45W easil. I was so excited.
Now I'd just be happy to see it stay at 5W ๐ตโ๐ซ. Please tell me there's a patch or a fix coming for this, this is just ridiculous. And I was very excited for the update, I love how it looks and it is really slick and all, but I definitely need faster charging speeds.
Gemini's response below:
The OneUI 8.5 update is currently causing widespread charging and thermal issues for S25 series users, with many reporting speeds dropping to **2.3W** (identical to your screenshot) due to aggressive thermal throttling or software bugs.
Your diagnostic shows a **Current Flow of 1,145 mA** and a **Voltage of 3.67 V**, which confirms the device is barely pulling any power despite the low **9% battery level**, where speeds should normally be at their peak.
Why this is happening:
OneUI 8.5 Thermal Bug: The update has introduced a bug where the phone inaccurately detects high temperatures (even at your safe **32.0ยฐC**), causing the power management system to "throttle" the speed to prevent damage.
Knox Matrix Conflict: Reports indicate that the new Knox security features in this version are causing high background CPU usage, which generates internal heat and blocks "Super Fast Charging" protocols. * **Handshake Failure:** The "Protocol: Charging" status in your app (instead of "PD" or "SFC 2.0") suggests the phone is failing to communicate with your wall charger to request higher wattage.
Steps to fix it: 1. **Wipe Cache Partition:** This is the most effective fix for post-update bugs. * Turn off your phone. Connect it to a computer via USB-C. * Hold **Volume Up + Power** until the recovery menu appears. * Select **Wipe Cache Partition** (using volume keys to navigate, power to select), then **Reboot**. 2. **Toggle Fast Charging:** Go to **Settings > Battery > Charging settings**. Toggle "Fast Charging" and "Super Fast Charging" **OFF and then ON** again to reset the software toggle. 3. **Check "Battery Protection":** OneUI 8.5 has more aggressive protection settings. Ensure it isn't set to a mode that limits charging speed at low percentages. 4. **Cooling Down:** Even though your battery is at 32ยฐC, the processor might be hotter. Try charging with the **case off** or while the phone is powered down completely to see if the wattage jumps back up.
If these don't work, you may need to wait for a hotfix update from Samsung, as this has been a known issue since the April/May 2026 rollout.
Same here on my S25 Ultra after the June patch! They definitely messed up the 5A charging profile. Swapping to a 3A cable is the only thing that makes things better, but still not stable. (A factory reset didn't help btw)
AI conclusion :
The Conflict:
The phone can pull 45W in two ways:
- Augmented PPS (10V x 4.5A): Requires a heavy-duty 5A cable with an internal E-Marker chip.
- Fixed USB-PD / PPS (15V ร 3A): A higher-voltage path that only uses 3 Amps and does not require a special chip.
The Glitch:
When you use a 5A cable, the phoneโs glitched firmware gets trapped in an "indecision" loop trying to choose between the 10V and 15V profiles. The handshake continuously crashes, causing the charging loops or severe throttling.
The Fix:
Swap to a standard 3A USB-C cable. Because a 3A cable lacks an E-Marker chip, it physically forces the phone to skip the broken 10V path entirely. The firmware instantly locks onto the 15V / 3A profile, allowing you to get your full, stable 45W Super Fast Charging 2.0 back immediately.
I was using my old 3A cable with a new 45W block before the software glitch hit and it was working great, then I tried every troubleshooting step and workaround I could find including buying new 3A and 5A cables and I even bought new charging blocks like people recommended and I tried all the button press tricks, absolutely nothing helped, it just went away for a while then came back hard. Might try getting the charging port replaced and see if it helps even though it's a software glitch, maybe a new port will be less sensitive and go back to normal but having to go through all of that when the software messed it up is ridiculous. I bought this phone hoping to get away from all the glitches my old S23 Ultra had, but wow.
Sorry to hear this I would suggest trying a new 25 / 45watt charger and cable rated for the wattage. You can run diagnostic tests in the support tab at the bottom of the Members app. I would also suggest contacting a service center to have it full tested. https://www.samsung.com/us/support/service/locations/
try cleanN ur chargeN port wit a plastic toothpick ,might have lint trapped in there & disconnect plug a few minz then plug it back in or reset outlet, I hope this helpz gl
I have similar issues and I was thinking I might have a damaged battery or charging circuit, but after reading the above sounds more likely to be a software issue.
These cable charging issues usually appear when I am getting very low level of battery, under 10 %. If I put my phone to charge while it's at 20-30% capacity it works fine.
Selected Answer
SamsungMod
Community Manager
06-24-2026 05:47 PM
in
ยOh no @lmantini1! I understand how frustrating it must be that your device isn't charging properly right now. Let's see if we can get this sorted for you.
First, inspect the device and charger. Verify that the phone, tablet, charger, and USB cable have no physical or liquid damage. If they do, it could prevent proper charging. Perform the following:
Check the USB connections for corrosion and bent pins.
If the device has recently gotten wet or if an alarm related to moisture in the charging port was displayed, wait 1 to 2 hours for the moisture to evaporate from the charging port. If any liquids other than water enters the device's charging port, you must rinse it in fresh water and dry it thoroughly with a dry, soft cloth.
If your device supports wireless charging, you can try charging it that way. Wireless charging is not affected by moisture or foreign materials in the charging port. Make sure to thoroughly dry the device before placing it on the wireless charger.
The USB cable should be secured firmly in the charging port of the device and charger with very little mobility.
Also check for liquid damage. To determine if the phone or tablet experienced liquid damage, you can check the Liquid Damage Indicator. The LDI is either inside the SIM card tray slot for newer devices or on the removable battery for older devices. To eject the SIM card tray, insert the ejector tool that came with your device into the hole on the SIM card tray. Next, push the tool until the tray pops out. Look inside the slot to access the LDI. Or, if you have a removable battery, you will need to take out the battery and inspect it. LDI indicators should be solid white or white with visible pink or purple X's. If the device has been exposed to moisture, the LDI will be solid pink, purple, or red.
Next, attempt to perform a soft reboot. Press and hold the Power button and Volume down button simultaneously until the device restarts. This can take up to 60 seconds. If the device enters Maintenance Boot Mode instead of restarting, use the Volume Up or Down buttons to highlight Normal Boot, and then select it by pressing the Side button or Bixby button.
Also, make sure your charger is authentic. Using third-party chargers may invalidate your warranty and cause damage. Samsung does not recommend using any chargers other than Samsung chargers, especially chargers that are uncertified or counterfeit. These can hinder the charging of your device and may cause battery issues if used long term.
Then charge your phone or tablet for at least 1 hour using the charging cable that came with it and an appropriate charger. It can take up to 10 minutes for the charging indicator to appear on the screen if the battery is completely drained, or if you've just gotten a new device.
Make sure to securely connect one end of the charging cable into the charging adapter, and then plug the adapter directly into a wall outlet. Do not plug the adapter into an extension cord or power strip.
If your phone or tablet still will not charge, visit our Support Center to request service. Thank you for posting, I hope this helps.
Halfbrasilian
Cosmic Ray
05-16-2026 07:24 AM
in
ยHalfbrasilian
Cosmic Ray
06-26-2026 12:31 PM
in
ย0 likes
Duderhino
Constellation
06-27-2026 02:22 PM
in
ยSame here on my S25 Ultra after the June patch! They definitely messed up the 5A charging profile. Swapping to a 3A cable is the only thing that makes things better, but still not stable. (A factory reset didn't help btw)
AI conclusion :
The Conflict:
The phone can pull 45W in two ways:
- Augmented PPS (10V x 4.5A): Requires a heavy-duty 5A cable with an internal E-Marker chip.
- Fixed USB-PD / PPS (15V ร 3A): A higher-voltage path that only uses 3 Amps and does not require a special chip.
The Glitch:
When you use a 5A cable, the phoneโs glitched firmware gets trapped in an "indecision" loop trying to choose between the 10V and 15V profiles. The handshake continuously crashes, causing the charging loops or severe throttling.
The Fix:
Swap to a standard 3A USB-C cable. Because a 3A cable lacks an E-Marker chip, it physically forces the phone to skip the broken 10V path entirely. The firmware instantly locks onto the 15V / 3A profile, allowing you to get your full, stable 45W Super Fast Charging 2.0 back immediately.
Halfbrasilian
Cosmic Ray
06-27-2026 02:58 PM
in
ย0 likes
GaryB82
Galactic Samsung Care Ambassador
06-21-2026 04:42 PM
in
ยhttps://www.samsung.com/us/support/service/locations/
0 likes
Mo174
Galaxy
06-21-2026 06:33 PM
in
ย0 likes
nbgburn
Asteroid
06-24-2026 05:24 AM
in
ย0 likes
Raja1911
Constellation
08-2-2026 12:35 AM
in
ยMe too , same problem with my device z flip 7.
0 likes
s25dave
Constellation
08-16-2026 10:28 PM
in
ย0 likes
Lgibson
Cosmic Ray
08-28-2026 12:16 AM
in
ย0 likes
vladutnea
Constellation
09-16-2026 12:21 AM
in
ยI have similar issues and I was thinking I might have a damaged battery or charging circuit, but after reading the above sounds more likely to be a software issue.
These cable charging issues usually appear when I am getting very low level of battery, under 10 %. If I put my phone to charge while it's at 20-30% capacity it works fine.
0 likes