Nowadays, we seem to use our mobile phones for connecting to the Internet and other online services more than we use them for actually making phone calls. Sadly, the quality of the Internet service you receive can vary significantly. For example, some countries have more advanced telecom networks than others. Remote areas of wilderness will not necessarily have the same quality of coverage as big cities. And even something as simple as being indoors can have a significant effect. Your smartphone lets you know the strength of your mobile Internet coverage by using an alphanumeric code near the signal bar….
Read the full article: EDGE, 3G, H+, Etc: What Are All These Mobile Networks?