Samsung Galaxy S21 5G - 128 GB - Grey - Snapdragon 8 - Android - Wi-Fi 6

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The Samsung Galaxy S21 5G is a powerful smartphone designed for users who demand high performance and cutting-edge features. It offers a stunning display, a versatile camera system, and 5G connectivity for a seamless user experience. However, its battery life might require some optimization for heavy users. This guide provides a comprehensive overview of the S21 5G, covering its key features, performance, setup, and troubleshooting tips.
| Processor | Snapdragon |
|---|---|
| Network Generation | 5G |
| Release Year | 2021 |
| Processor Family | Snapdragon 8 |
| Internal Storage Capacity | 128 GB |
| Operating System | Android |
| Display Size | 6.1 |
| OS | Android |
| Colour | Grey |
| WiFi Standard | Wi-Fi 6 |
| Series | S21 5G |
| Model Part Number | SM-G991BZADEUE |
| Mobile Device Battery Capacity | 4000 mAh |
| Brand | Samsung |
Simultaneously press the power button and the volume down button.
No, the S21 5G does not support expandable storage via a microSD card.
It is water-resistant with an IP68 rating, but not waterproof. Avoid prolonged submersion.
Go to Settings > Software update > Download and install.
No, the S21 5G does not include a charger in the box.
Go to Settings > Display and toggle on Dark mode.
The display has a 120Hz refresh rate.
Ensure the battery is charged. Press and hold the power button for 10-15 seconds. If the device still does not turn on, try charging it for a while and then try again.
Optimize settings such as screen brightness and refresh rate. Close unused apps and enable power-saving mode. Consider limiting the use of 5G if in an area with poor signal.
Restart your phone and router. Check your Wi-Fi password. Ensure you are in range of the Wi-Fi signal.
Clear the app's cache and data in settings. Restart the device. Update the app from the Google Play Store.
Close unused apps. Clear cache and data from frequently used apps. Ensure the device storage is not full.
The Samsung Galaxy S21 5G is compatible with: