G stands for 2G (second-generation) cellular network technology.
E represents Edge, an earlier version of 2G technology that provides faster data transfer speeds than basic 2G, but slower than 3G.
3G stands for third-generation technology, which provides faster data speeds than 2G and enables mobile internet access, video calls, and mobile TV.
H stands for 3G HSPA (High-Speed Packet Access), which provides faster data speeds than standard 3G technology.
H+ indicates a higher-speed version of HSPA, providing faster data transfer speeds.
4G (LTE) stands for fourth-generation Long-Term Evolution, which provides faster data speeds and improved performance compared to previous generations, allowing for better support of demanding applications such as high-definition video streaming.