When should you replace your Samsung S21 FE battery
If your phone drains quickly, shuts down unexpectedly, or displays incorrect battery percentages, it may be time for a battery replacement. In some cases, a swollen battery can loosen the back cover, which could pose a safety risk. Replacing the battery early helps keep your phone safe and functioning properly.
Our replacement process
At Smartphone Accessories, we start with a full device check to assess your battery’s condition. If replacement is needed, we’ll explain the issue clearly and use a high-quality compatible battery.
The entire procedure is done with care. We disassemble the device safely, clean internal components if necessary, and reassemble everything securely. Afterward, we run tests to make sure your phone performs properly.
The service is completed within 60 to 120 minutes. No need to leave your phone overnight.
Samsung S21 FE battery specifications (reference)
Battery capacity: Approximately 4500mAh
Type: Lithium-ion
Fast charging: Supported up to 25W
Compatible with: Samsung Galaxy S21 FE (model SM-G990)
Why choose Smartphone Accessories
We use verified, high-quality parts only – no low-grade or unknown replacements. Our technicians are experienced and work with precision. Conveniently located near Hoan Kiem Lake, the shop is easy to reach. While you wait, you can enjoy a short walk or have coffee by the lake.
We offer clear pricing and full post-service support without hidden fees.
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