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Google Spaces was a mobile app for group discussions and messaging developed by Google. [1] The app was intended to compete with Slack as a content sharing platform where users can create a "space", invite their friends for discussion, and share videos, images, text, and other media.
Circuitmess Ringo (previously MakerPhone) is another DIY Arduino phone with open source firmware [87] and available schematics, [88] focusing on education. The PiPhone, [89] ZeroPhone [90] and OURphone [91] are similar, but based on the Raspberry Pi. The main components to make an open mobile phone are: Back cover; Touch screen; Battery; Logic ...
Unlocking the bootloader allows installing and running unsigned code on a device, including user customized software. Operating outside the manufacturer specification might usually result in voiding any warranties and may make the device susceptible to data theft, as the integrity of the operating system (as intended by the manufacturer) can no longer be guaranteed. [1]
Ultra Mobile is a mobile virtual network operator (MVNO) that uses the T-Mobile US network. Customers can choose the number of minutes, text messages, or data that can be used via a prepaid mobile phone plan.
The Type Allocation Code (TAC) is the initial eight-digit portion of the 15-digit IMEI and 16-digit IMEISV codes used to uniquely identify wireless devices.. The Type Allocation Code identifies a particular model (and often revision) of wireless telephone for use on a GSM, UMTS, LTE, 5G NR, iDEN, Iridium or other IMEI-employing wireless network.
Imagine never being without a cell signal ... in April 2023 by completing the first two-way phone call via space on an unmodified cell phone. This milestone was achieved using its low Earth orbit ...
USSD on a Sony Ericsson mobile phone (2005). Unstructured Supplementary Service Data (USSD), sometimes referred to as "quick codes" or "feature codes", is a communications protocol used by GSM cellular telephones to communicate with the mobile network operator's computers.
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.