Generally, it is said that the communication without stress is about 10 Mbps (5 Mbps for smartphones) to 30 Mbps. Communication speeds include “up (send / upload)” and “down (receive / download)”, and “down” is important for receiving emails, browsing websites, and watching videos. When you connect your PC or smartphone to the Internet, you feel “fast” because the “downlink” communication speed is fast.
However, it is important to note that the maximum communication speed displayed when signing up for an internet contract. This is the maximum value provided by the line operator called the “best effort method.” It is a theoretical value only, and communication at this speed is not always guaranteed. In the case of optical fiber, it is said that the actual communication speed is about 30-60%.
[By application] Communication speed guide
The communication speed that you can use comfortably depends on the application.
When using email or LINE
A guideline is 128kbps to 1Mbps downlink. 128kbps is the speed when the communication is restricted. There is no problem if it is only text, but if files such as images and videos are attached, it will take time to download.
When browsing a website
A guideline is 1 Mbps to 10 Mbps. A site with a lot of images and photos should have at least about 3 Mbps, but if it is a text-based site, it will be possible to browse at about 1 Mbps without trouble.
When watching a video
5 to 20Mbps is a guide, but it depends on the resolution. For example, when watching high-quality video such as 4K, we want to secure 25 Mbps.