About SIM

SIM

About SIM

A subscriber identity module (SIM) is a removable smart card for phones. SIM cards store the required data to recognize the cell phone. Also, It contains information required for voice encryption to make listening in on calls almost impossible.

Also the client ID (and individual number) is attached to the SIM card and not to a specific mobile phone. This allows a consistent exchange of the same SIM card between various GSM phones.

SIM cards additionally serve as storage for SMS messages and the client’s contacts. Current SIM cards can save up to 250 name/number and up to 50 SMS instant messages.

The SIM card can’t store different numbers per contact or other increasingly complex data. This implies that if you copy your contacts data from the telephone memory to the SIM memory, contacts get separated into many entries as there are numbers for every individual contact and removes of the other information.

All GSM telephones and most iDEN telephones require a SIM card to work.

There are kinds of telephones (CDMA, TDMA, AMPS) that don’t use a SIM. Rather, they required information is programmed straight into the mobile phone.

Replaceable SIM cards come in four standard sizes:

Full-size (85.6mm × 53.98mm × 0.76 mm)

Mini (25mm x 15mm x 0.76mm)

Micro SIM (15mm x 12mm x 0.76mm)

eSIM (6mm x 5mm x <1mm) Non Removable

Nano-SIM (12.3mm × 8.8mm × 0.67mm)

A

A-GPS (Assisted GPS)A2DP (Advanced Audio Distribution Profile)AAC (Advanced Audio Coding)Airplane ModeAlarm ClockAMOLED (Active-matrix organic light-emitting diode)Analog TechnologyAndroid Operating SystemAntennaApertureAPN (Access Point Name)Apple iOS

B

Band Bandwidth Battery Charging Biometrics Bit BlackBerry OS Bluetooth Bps (Bits per Second) Brand Broadband Browser Byte

C

Camera Capacitive Touchscreen Car Kit Carrier CDMA (Code-Division Multiple Access) Cell Chipset CIF (Common Intermediate Format) Connected GPS Corning Gorilla Glass CPU (Central Processing Unit)

D

DC-HSDPA (Dual Carrier or Dual Cell High-Speed Downlink Packet Access) Dual-band Dual-Mode Dual-SIM Dynamic Memory

E

EDGE (Enhanced Data for Global Evolution) EDR (Enhanced Data Rate) EGPRS EGSM (Extended GSM)

F

Firmware Flash Memory Flight mode FM Radio Frequency FTP (File Transfer Protocol)

G

Galileo (Global Navigation Satellite System) GB (Gigabyte) Gbps (Gigabits per second) Geo-tag GLONASS (Global Navigation Satellite System) GPRS GPS (Global Positioning System GPU (Graphics Processing Unit)

H

H.263 H.264 H.265 Handwriting recognition Hot Spot HSCSD (High-Speed Circuit Switched Data) HSDPA (High-Speed Downlink Packet Access) HSDPA+ (High-Speed Downlink Packet Access Plus) HSP (Headset Profile) HTML (Hypertext Markup Language) Hz (Hertz)

I

iDEN (Integrated Digital Enhanced Network) Image Signal Processor (ISP) IMEI (International Mobile Equipment Identity)

J

Java

K

KB (Kilobyte) Kbps (Kilobits per second) Key Guard

L

LCD (Liquid Crystal Display) LED (Light-Emitting Diode) Li-Ion (Lithium Ion) Li-Polymer (Lithium Polymer) Loudspeaker

M

Macro Magnetometer mAh MB (Megabyte) Mbps (Megabit per second) Megapixel Memory card slot Memory effect Messaging MHz (Megahertz) Micro USB microSD microSDHC MIDI (Musical Instrument Digital Interface) MIDP (Mobile Information Device Profile) MMS (Multimedia Messaging Service) Mobile games Mobile High-Definition Link (MHL) Mobile IM (Instant Messaging) Modem Monochrome MP3 (MPEG Layer 3) MPEG (Motion Picture Experts Group) MPEG-4 video Multitouch input method Music playback time (battery life) Music Player

N

NAND Memory Network capacity Network coverage NOR Memory Numeric keypad

O

OEM (Original Equipment Manufacturer) OLED (Organic Light-Emitting Diode) Optical Zoom OS (Operating System) OTA (Over-The-Air) OTG

P

PCS (Personal Communications Service) PDA (Personal Digital Assistant) Pixel Pixel density (Pixels Per Inch) Price PTT (Push-To-Talk) Push

Q

Quad-band QVGA (Quarter Video Graphics Array) QWERTY keyboard layout

R

RAM (Random-Access Memory) RBDS (Radio Broadcast Data System) RDS (Radio Data System) Resistive touchscreen Resolution Ringtone Roaming ROM (Read-Only Memory) RS-MMC (Reduced-Size Multi Media Card)

S

Screen protection SD (Secure Digital) Secondary camera Sensors SIM SIM lock Single-Band Smart Watch Smartphone SMS (Short Messaging Service) Speed Dial Stand-by time (battery life) Stereo Speakers Streaming Video Stylus

T

Talk time (battery life) Tethering Text messaging (texting) Touchscreen Tri-band

U

UI (User Interface) UMTS UPnP (Universal Plug and Play) USB (Universal Serial Bus) USB On-The-Go USIM

V

VGA (Video Graphics Array) Video call Voice dialing Voice mail VPN (Virtual Private Network)

W

WAP (Wireless Application protocol) WCDMA(Wideband Code Division Multiple Access Wearable Technology Wi-Fi Windows Mobile Windows Phone OS WLAN WMV (Windows Media Video)

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