Mobile communication technology is the momentum of the daily routine, but the entire line service has been replaced by generations every 10 years.With the transition from the 4th generation (4G) to the fifth generation (5G), which will be in full swing, the third -generation mobile communication service, which began commercialization in 2001, is ending its role.。
In fact, communication companies have declared the end of 3G.For example, au's 3G mobile phone service (CDMA 1X Win) is scheduled to end in March 2022, and after that, only 3G -compatible terminals and 4G terminals that are not supported VoLTE will not be available.Similarly, SoftBank is scheduled to end in January 2024, and DOCOMO is the end of March 2026.
It doesn't end right now, but if the end time is the fastest au, you may be in a hurry unless you take measures in advance.
When the 3G service is completed (stop), voice calls/data communication using 3G lines will not be possible.Since the terminal itself can be done, it is possible to check the address book or look at the photos taken, but in the case of a terminal that supports only 3G, the voice call/data communication service provided by the carrier will not be available.
In the case of au, the end of the 3G line means that terminals that do not support au Volte (voice calling service using 4G lines) cannot speak voice calls.Unless you change your device or replace the SIM card, you will not be able to talk after April 1, 2022.
This situation can also be said to MVNO (cheap SIM service) that uses au line.For example, "MINEO", which provides services that use au lines, uses au line Au line Nano Sim/Micro SIM cards for au Volte -non -compatible mobile phones and smartphones April 2022.It is announced that it will not be available after one day.Let's respond as soon as possible.
