How to Fix Galaxy S26 Charging Slow After Update

Galaxy S26 Charging slow after update usually means the update changed a key setting, left broken temporary data behind, or caused the affected app or service to stop loading correctly.

Follow the fixes below in order. Test the exact problem after each step so you can stop when the issue is resolved.

For more help, also visit the Galaxy S26 hub.

Fix #1: Confirm fast charging is enabled

Slow charging often starts when the fast-charging toggle changed after an update.

Open Settings > Battery > Charging settings.
Make sure fast charging is enabled.
Reconnect the charger and compare speeds.

Fix #2: Try another cable, adapter, and wall outlet

The update can expose a charger that was already failing under load.

Use a known working Samsung-compatible cable and adapter.
Plug directly into a wall outlet.
Check whether charging speed improves.

Fix #3: Inspect the USB-C port for debris or moisture

The phone will charge slowly on purpose when the port is dirty or damp.

Disconnect the charger.
Inspect the USB-C port carefully.
Let the phone dry and clean loose debris gently before charging again.

Fix #4: Let the phone cool down before charging

Heat can force the phone to slow down charging after an update.

Remove the case if it traps heat.
Stop gaming or camera use while charging.
Retry charging after the phone cools down.

Fix #5: Reset battery settings or update again

A follow-up patch may be needed if slow charging started immediately after the update.

Install any pending software update.
Reset all settings if needed.
Test charging speed again with the original charger.