In India, the applicable limit for the head SAR is 1.6 W/kg per 1 g of tissue. Locally, the SAR levels are measured and certified by the Telecom Engineering Centre (TEC) or an internationally accredited lab. The instruction set architecture (ISA) is a set of commands used by the software to manage the CPU's work. Information about the set of instructions the processor can execute. This SAR value considers the combined effects of using the mobile device as a Wi-Fi hotspot operating at the same time as other radiofrequency transmitters - cellular, Bluetooth, etc.

This SAR rating shows the highest level of exposure to electromagnetic radiation measured when the device is placed at the hip level. The top SAR value for mobile devices used in Europe is limited to 2 W/kg per 10 g of tissue. This standard follows the ICNIRP Guidelines 1998 as well as the IEC standards and is determined by the CENELEC. GPRS, EDGE, CDMA2000 EV-DO Rev 0, CDMA2000 EV-DO Rev A, UMTS, HSDPA, HSUPA, HSPA+, TD-LTE, LTE, LTE-A, SA/NSA, Sub6 Information about the number of pixels per centimeter (ppcm) or per inch (ppi) of the display. The higher the pixel density, the more detailed and clearer is the information displayed on the screen.Specific Absorption Rate (SAR) The SAR rating shows the amount of electromagnetic radiation absorbed by the human body when using a mobile device, expressed in W/kg. Head SAR (EU) The Galaxy S23 Ultra also sports a quad rear camera setup, with a 200.0Mpx Samsung ISOCELL HP2 standard lens, a 12.2Mpx Sony IMX564 wide angle lens, a 10.0Mpx telephoto + portrait lens, and a 10.0Mpx telephoto lens. On the front, there’s a 12.0Mpx Samsung S5K3LU selfie shooter. Additionally, it features optical stabilization (OIS), 4K video capture, 8K video capture, 3x and 10x zoom with OIS, and 100x digital zoom.

The optical format of an image sensor is an indication of its shape and size. It is usually expressed in inches.The display resolution shows the number of pixels on the horizontal and vertical side of the screen. The higher the resolution is, the greater the detail of the displayed content. Networks A mobile (cellular) network is a radio system, which allows a large number of mobile devices to communicate with each other. GSM A CPU core is the processor unit, which executes software instructions. Presently, besides single-core processors, there are dual-core, quad-core, hexa-core and so on multi-core processors. They increase the performance of the device allowing the execution of multiple instructions in parallel. One of the main characteristics of the display is its type/technology, on which depends its performance.

Connectivity wise, the Galaxy S23 Ultra offers the latest standards, such as Bluetooth 5.3, Dual SIM, USB Host 3.0, NFC, WiFi 6 (802.11ax), GPS (L1+L5), and eSIM support. Lastly, it’s powered by a 5000mAh battery that supports 45.0W fast charge and wireless charging. This value represents the localized absorption of RF energy when using a phone as a Wi-Fi hotspot or tethering it to another device. The hotspot SAR value is important for users who often share their mobile device's internet connection with other devices. The color depth of the display is also known as bit depth. It shows the number of bits used for the color components of one pixel. Information about the maximum number of colors the screen can display. System on Chip (SoC) A system on a chip (SoC) includes into a single chip some of the main hardware components of the mobile device. SoCThis SAR rating shows the maximum level of exposure to electromagnetic radiation taken when the device is placed next to the ear. The applicable limit for the US is 1.6 W/kg per 1 g of tissue. In the US the FCC tests and sets the SAR limits for all mobile devices, which are controlled by the CTIA. In photography, the Field of view (FoV) depends not only on the focal length of the lens but also on the sensor size. It is derived from the lens's angle of view and the sensor's crop factor. The lens's angle of view is a measure of the angle between the two farthest separated points within the frame measured diagonally. Simply put, this is how much of a scene in front of the camera will be captured by the camera's sensor.