What is A-GPS (Assisted GPS) - Definition?

GPS depends on information from satellites to get the current location of the device. But in case of area where device is getting poor signals, it may face trouble in locating exact positioning data. In this case, GPS unit may need as long as 12.5 minutes to get exact current location. Hence, very slow startup performance of the GPS unit in case of poor satellite signals. Assisted GPS (abbreviated as a-GPS) is the system to improve the startup performance or GPS. It is used in GPS capable devices to offer faster positioning systems.
It is achieved with the help of a Assistance Server. Data connection is required to use this. When GPS signals are weak, device connects to assistance server on internet. A-GPS features depend mostly on internet data. In case of no internet connection, device will use satellite data.
A-GPS also gives better accudaracy

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1080p | 1G | 2G | 3G | 4G | 5G | 802.11
A
A-GPS (Assisted GPS) | A2DP (Advanced Audio Distribution Profile) | AAC (Advanced Audio Coding) | Airplane Mode | AMOLED display (Active-matrix organic light-emitting diode) | aptX | Auto Focus
B
Band | Benchmarking | Bluetooth | Browser
C
Capacitive Touchscreen | CDMA (Code-Division Multiple Access) | Corning Gorilla Glass | CPU (Central Processing Unit)
D
DLNA (Digital Living Network Alliance)
E
EDGE (Enhanced Data rates for GSM Evolution)
F
Fixed Focus | Flight mode
G
GPS (Global Positioning System)
H
HDR
I
IP Ratings
N
NavIC | Near Field Communication (NFC)
O
Optic AMOLED | Optical image stabilization
R
RAM (Random-Access Memory)
S
SMS (Short Messaging Service) | Stylus | SVGA (Super video graphics array)
T
TFT (Thin Film Transistor)
U
UI (User Interface)
V
VGA (Video Graphics Array)
X
Xenon flash