2g card and 4g card of telecom for the aged.

The main difference between 2G card and 4G card of telecom for the aged lies in speed and function.

The advantages of 2G card are low price, large bandwidth and wide coverage, and it performs well in SMS and data transmission services. 4G cards can provide high-speed connections, allowing users to enjoy high-quality multimedia services, such as live video, voice calls and high-definition video streaming. 4G cards can also provide users with faster data transmission speed.

Generally speaking, the function and speed of 4G cards are better than that of 2G cards, but the price will be higher. If the old computer supports 4G network and needs faster network speed and more functions, you can consider using 4G card. If only basic communication and data transmission are needed, 2G cards are enough.