If your phone's battery is draining very quickly, suddenly discharges after a call, has swollen, or no longer charges, it's time for a replacement.
Modern smartphones make this process difficult, as they can only be opened with special tools. It is recommended to consult a specialized technician, as any mistakes could result in malfunctioning of your device.
Give your phone a new lease on life so it lasts again like when you first bought it.