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Rugged smartphone. A rugged smartphone is a specific type of toughened smartphone which is designed to be completely sealed within a durable housing to protect it against damage from water, shock, dust, and vibration. [1] [2] [3] Rugged smartphones are designed to survive extreme weather and temperatures, accidental damage, and rough handling ...
Frequency bands for 5G New Radio (5G NR), which is the air interface or radio access technology of the 5G mobile networks, are separated into two different frequency ranges. First there is Frequency Range 1 (FR1), [1] which includes sub-6 GHz frequency bands, some of which are traditionally used by previous standards, but has been extended to ...
There are 51 MTAs, 493 BTAs and 175 EAs in the United States. The Advanced Wireless Services (AWS) bands, auctioned in the summer of 2006, were for 1,710–1,755 MHz, and 2,110–2,155 MHz. The spectrum was divided into blocks: A blocks were for Cellular Market Areas, based on existing cellular (1G) licenses, and were 2 × 10 MHz.
GSM uses TDMA and FDMA for user and cell separation. UMTS, IS-95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM . Time-division multiple access (TDMA) provides multiuser access by chopping up the channel into sequential time slices. Each user of the channel takes turns to transmit and receive signals.
The laws regulating driving (or "distracted driving") may be subject to primary enforcement or secondary enforcement by state, county or local authorities. [1]All state-level cell phone use laws in the United States are of the "primary enforcement" type — meaning an officer may cite a driver for using a hand-held cell phone without any other traffic offense having taken place — except in ...
Cellular frequencies. Cellular frequencies are the sets of frequency ranges within the ultra high frequency band that have been assigned for cellular-compatible mobile devices, such as mobile phones, to connect to cellular networks. [1] Most mobile networks worldwide use portions of the radio frequency spectrum, allocated to the mobile service ...
MIL-STD-810G certified. Water proof up to 5 m for 60 min. The Cat S60 is a mobile phone introduced in 2016 by Caterpillar Inc. within the Cat phones line and has since been succeeded by the Cat S61 and Cat S62 Pro. It is the first smartphone to include an integrated thermal imaging camera and presently [when?] the world's most waterproof ...
A mobile phone signal (also known as reception and service) is the signal strength (measured in dBm) received by a mobile phone from a cellular network (on the downlink ). Depending on various factors, such as proximity to a tower, any obstructions such as buildings or trees, etc. this signal strength will vary.
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