Why Samsung S21 (Plus/Ultra) Charging Slowly? Get Solutions

Samsung S21 Charging Slowly? Fast charging not working on Samsung S21Ultra? Many users have reported a slow charging issue with the Samsung phone, which is quite irritating. The new Samsung flagship phones feature super-fast charging ability to power up the device in less than an hour to 100%, but because of some random issue, fast charging not working on S21.

This article will show you quick fixes to deal with Samsung S21, S21Plus, S21Ultra slow charging issue with easy solutions.

Samsung S21, S21Plus, S21Ultra Fast Charging Not Working

Toggle Super-Fast Charging Mode

To use the Super Fast Charging Mode on Samsung S21, S21Plus or S21Ultra, the option needs to be enabled from the Settings app. By default, the Superfast Charging is turned on, but if in case, you or someone has accidentally disabled it, the Samsung S21 superfast charging won’t work, despite making efforts.

  1. Go to the Settings App.
  2. Tap on Battery and device care.
  3. Tap Battery.
  4. In the end, turn on Superfast charging and Fast wireless charging.

Use Compatible Adapter and Cable

Unlike Samsung S20Ultra, none of the Samsung S21 devices supports 45W Charging Adapter, which means if you’re using 45W Charging Adapter in order to charge the device super fast, it won’t work at all. To get the best charging speed on Samsung S21, S21Plus, S21Ultra use the 18W or 25W Charging Adapter, it’s best if you get Samsung Travel Adapter.

At the same time, the cable plays a vital role in delivering consistent speed to the phone. Get the adapter compatible adapter to get a stable charging speed on Samsung.

You can check the best Fast Wireless Charging for Samsung S21, S21Plus, S21Ultra

Clean Charging Port

Up next is to clean the charging port. Over time, the device collects a lot of invisible dust and debris near the camera, in the charging port, and you may have observed the dust on removing the case after a long time. Therefore, flash the light inside the charging port and see if there anything you can suspect, and blow some air with your mouth.

Reboot Device

Till now we’ve focused on the hardware part, what if it’s a software glitch or random firmware crash? To troubleshoot that, start with restarting the Samsung S21 and see if it helps. Restarting the device will fix minor bugs and glitches, so here’s how to restart the phone.

  1. Press and hold the Volume Down and Power button until Power Menu appears.
  2. Select the Power Off option.
  3. Once the device turns off, after two minutes again press the Power button to reboot.

Reset All Settings

Another highly recommended workaround is to reset all settings; this will reset all the customized settings to default, most of the time this solution is the reason behind problem fixes.

  1. Go to the Settings
  2. Tap General management.
  3. Select Reset.
  4. Select Reset all settings.
  5. Confirm Reset.

Calibrate Battery

Calibrating the battery is too easy, just use the phone until the battery goes to 0%, and charge the phone to 100% without using it. Do the same three times, this will calibrate the Samsung S21, S21Plus, S21Ultra battery.

Contact Samsung Support

If none of the above solutions work out for you to fix the Slow Charging Issue on Samsung S21Plus, S21Ultra, and S21, then contact Samsung Support for the best assistance.

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