calling

The first thing you expect when calling a number is the ringtone, meaning a service provider connects you to the user. But sometimes, the user … Read more

Have you ever dialed a number and then got the message that it was an unallocated phone number? Or, if not, imagine for a moment … Read more

AT&T is undoubtedly the largest telecommunications provider in the world. One of their most convenient services is the voice mail feature which allows callers to … Read more

The Do Not Call List is a registry of phone numbers that prevents telemarketers from calling their owners. If you have been receiving annoying calls … Read more

It is possible to identify all incoming calls before you can answer them. The best way of doing it is to use caller ID. Caller … Read more