Technology - There are two main screen technologies currently used in phones and tablets: LCD and AMOLED. The former usually features a light source and liquid crystals, while the latter is based on organic light-emitting diodes. Newer LCD variations like IPS-LCD and Super-LCD allow for very accurate color reproduction and very wide viewing angles, where no significant image quality loss is observed. Current AMOLED screens differ in such a way that they can exhibit much more saturated colors (sometimes too much) and incredibly high contrast levels, which is due to black color being completely black in AMOLED displays. IPS LCD IPS LCD. Focal length (35mm equivalent) - The lower (shorter) the focal length number, the wider the shot will be.

Conversely, longer focal length cameras produce narrower frames, which can be used for telephoto (zoomed-in) purposes. CDMA - Code Division Multiple Access. A technique of multiplexing, also called spread spectrum, in which analog signals are converted into digital form for transmission.

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For each communication channel, the signals are encoded in a sequence known to the transmitter and the receiver for that channel. The foremost application is digital cellular phone technology from QUALCOMM that operates in the 800MHz band and 1.9GHz PCS band.

CDMA phones are noted for their excellent call quality and long battery life. 800, 1900 MHz GSM 850, 900, 1800, 1900 MHz 850, 900, 1800, 1900 MHz UMTS 850, 900, 1900, 2100 MHz 850, 900, 1700/2100, 1900, 2100 MHz LTE (FDD) Bands 1, 3, 7, 8, 28 Bands 1, 2, 3, 4, 5, 7, 8, 13, 17, 18, 19, 20, 25, 26 LTE (TDD) Bands 38, 39, 40, 41 Data LTE-A Cat 6 (300/50 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s LTE, HSPA, UMTS Nano SIM Yes Multiple SIM cards 2 slots. Positioning - This field shows the positioning systems supported by the device. The most common types are GPS and A-GPS. GPS - This is one of the most widespread global positioning technologies, developed and maintained by the U.S. It uses satellites in order to detect your location. Works best in clear weather.

A-GPS - A-GPS stands for Assisted GPS and is the industry standard for positioning and navigation. “Assisted” means that it can use local wireless networks, in addition to satellites, for quicker and more precise localization.

GPS, A-GPS GPS, A-GPS, Glonass, Cell ID, Wi-Fi positioning Navigation Turn-by-turn navigation, Voice navigation Turn-by-turn navigation, Voice navigation Other Tethering, Computer sync, OTA sync Tethering, Computer sync, OTA sync, AirDrop. FCC approval - The Federal Communications Commission (FCC) is an independent United States government agency, directly responsible to Congress.

The FCC was established by the Communications Act of 1934 and is charged with regulating interstate and international communications by radio, television, wire, satellite and cable. The FCC's jurisdiction covers the 50 states, the District of Columbia, and U.S. Every wireless phone device that is sold in the U.S. Has to be tested and approved for sale by the FCC. Date approved.

FCC measured SAR - Working closely with federal health and safety agencies, such as the Food and Drug Administration (FDA), the FCC has adopted limits for safe exposure to radiofrequency (RF) energy. These limits are given in terms of a unit referred to as the Specific Absorption Rate (SAR), which is a measure of the amount of radio frequency energy absorbed by the body when using a mobile phone.