A Bureau of Indian Standards (BIS) filing listing a battery with model number EB-BS957CBY has been tied to the expected Galaxy S27 Pro, suggesting the handset could be announced in the first weeks of 2027, according to tipster SammyGuru. The filing itself does not list a capacity but confirms development is progressing; BIS certification is typically obtained four to six months before a phone’s announcement, which aligns with an early‑2027 debut.
Galaxy S27 Pro leaks: display, lineup and positioning
A separate leak from Digital Chat Station indicates the Pro is being tested with a 6.47‑inch display, notably smaller than the rumored Ultra, suggesting Samsung may be positioning the Pro as a bridge between the Plus and Ultra models. If accurate, the Galaxy S27 family would expand to four models: the S27, S27+, S27 Pro and S27 Ultra, with the Pro placed above the Plus and below the Ultra to offer Ultra‑caliber hardware in a more manageable body.
Reports also claim the S27 Pro and S27 Ultra will use Samsung Display’s M16 OLED panels, while the standard S27 and S27+ would use M14 panels. Notebookcheck notes the M16 material is expected to improve brightness, color accuracy, power efficiency and display longevity, and that M16 already ships in competing phones such as Apple’s iPhone 18 Pro and Google’s Pixel 11.
Battery and charging hints
Although the BIS listing does not include capacity, earlier reports have floated a 5,200mAh battery for the Pro. Chinese 3C certification filings have also suggested 60W wired charging for the model, matching the Ultra and outpacing the rest of the S‑series. Taken together, a 5,200mAh cell plus 60W charging would indicate Samsung is targeting flagship‑level charging and solid battery life in a smaller frame.
Separately, Samsung is reportedly considering silicon‑carbon battery technology for the S27 generation. That technology is said to offer greater energy density, which could allow higher capacity in similar physical dimensions — a potential advantage for a relatively compact 6.47‑inch device.
Design, cameras and processors
Early reports suggest Samsung may give the Galaxy S27 family clearer visual distinctions: the S27 Ultra could adopt a redesigned rear camera layout with pill‑shaped elements, while the standard S27 and S27+ might retain a camera design similar to the current S26 generation. The Pro’s final appearance remains unclear, but it may sit visually between the standard models and the Ultra.
Processor plans remain uncertain. SammyGuru has suggested a possible regional split between a next‑generation Snapdragon chip and Samsung’s own Exynos 2700, meaning the chipset in an S27 Pro could vary by market. Other rumored but unconfirmed details include a high‑end camera system and a 16‑megapixel selfie camera.
None of the details above have been confirmed by Samsung. Between the BIS battery filing, the 3C certification record and multiple display and battery leaks, the Galaxy S27 Pro is increasingly appearing as a planned part of Samsung’s 2027 roadmap rather than a mere rumor.
