After the earthquake, your mobile phone was disconnected and could not receive signals?3 things you must know when making voice calls using the “Wi-Fi Calling” function

After the earthquake, your mobile phone was disconnected and could not receive signals?3 things you must know when making voice calls using the “Wi-Fi Calling” function

(Photo/Reuters)

This morning (3rd), a 7.2-magnitude earthquake occurred in Hualien, shaking violently and shaking the whole Taiwan. The disaster in Hualien was serious, and disasters were also reported in various counties and cities. The Meteorological Administration issued an appeal that aftershocks with a magnitude of 6.5 to 7.0 may continue to occur in the next 3 to 4 days, reminding the public to stay alert at all times and pay attention to their own safety.

After the earthquake, many people found that the 5G network on their mobile phones suddenly lost service, leaving behind 3G, 4G Internet connections hung up, they could only answer calls but not make calls, and mobile signals were intermittent and unstable. They were worried that if another strong earthquake occurred in the future, their mobile phones would be damaged. Unable to make or receive calls. In this regard, telecom operators said that the strong earthquake caused power transmission interruption, which also affected the mobile communication services provided by base stations in some counties and cities. They are currently making every effort to repair it as soon as possible. It is expected that the repair will be completed later today and the situation will return to normal. communication.

If the mobile phone signal is unstable or in a place with poor reception, and the mobile phone does not display the 4G/5G signal status, you can use the built-in “WiFi calling” function of the mobile phone (which needs to be turned on manually). As long as you are in a In an environment with WiFi wireless Internet access, the mobile phone can make voice calls (including within the network and outside the network) through the “WiFi Call” function. At the same time, it can also receive important incoming calls such as local calls and mobile phones, as well as send and receive text messages, ensuring continuous calls.

However, the mobile phone must support VoLTE, and both mobile phones must be successfully enabled to use the “WiFi Calling” function. A special reminder is that if people use mobile phones that only support 3G Internet access, or if they purchased older models before 2019, they may not have the “WiFi calling” function that supports VoLTE technology.

Currently, Taiwan’s three major telecom operators, China Telecom, Taiwan Mobile and Far EasTone, all provide free VoLTE services (with WiFi calls and IP text messages). No additional monthly fees are required. The rate for making voice calls is based on the user’s current domestic tariff. /Promotion plan calculation. The “WiFi Calling” function must be successfully enabled on the mobile phones of both parties to the call.

The premise is that users need to apply to the phone number operator by themselves, and can apply in person at the store or by calling the customer service hotline via mobile phone (for Chinese users, dial 800 for mobile phones, for large Taiwan users, dial 188 for mobile phones, and for Far EasTone users, dial 888 from mobile phones). Regardless of iPhone or Android phone, after completing the application, you must also remember to manually turn on the related functions of “WiFi Calling” on the phone you are using. The operation setting method differs according to each brand and model.

●What are the “WiFi calling” function and VoLTE service of mobile phones?

The “WiFi Calling” function uses voice calling services through the 4G LTE network. It is based on a technology called VoLTE (full name: Voice Over LTE). Therefore, the mobile phone model used needs to be inserted into a SIM that supports 4G/5G Internet access. card, and the 4G/5G mobile phone model also needs to support VoLTE calling technology, you can use the built-in “WiFi calling” function of the mobile phone to make and receive voice calls.

In addition, the relevant setting operations for manually enabling the “WiFi Calling” function after applying for VoLTE, as well as common QA questions, are summarized as follows:

1. After applying for VoLTE, how to set up the “WiFi calling” function on the mobile phone?

●iPhone: “Settings” → “Mobile Services” → “Mobile Data Options” → “Voice & Data” and turn on VoLTE. At the same time, go to “Settings” → “Mobile Services” → “WiFi Calling” and turn on “WiFi Calling on iPhone”.

● Android: Take Samsung as an example, go to “Settings” → “Connection” → “Mobile Network” → turn on “Enable VoLTE”, then find “WiFi Calling” and turn it on. The settings of each Android brand model mentioned above may be slightly different, please refer to the model description.

Regardless of your iOS or Android phone, remember to turn on the relevant settings. (Photo/photo by reporter Wu Peihua)
After activating the VoLTE voice call service, the mobile phone settings function must also be turned on to activate the “WiFi calling” function. The picture shows the setting path using SONY mobile phones and Xiaomi mobile phones as examples. (Picture reproduced from Far EasTone Telecommunications YouTube video)

2. When using the “WiFi calling” function to dial 1999, the call cannot be connected?

When the “WiFi calling” function is turned on on the mobile phone, the location of the call cannot be immediately confirmed, so short codes such as 1911, 1919, 1950, 1980, 1991, 1995, 1999, 118, 1968, 166, 167, 1966, 85238 cannot be dialed. Dedicated hotline (you need to go to a place with mobile phone reception and use a mobile signal to call the above short code hotline).

3. Will using the “WiFi calling” function occupy the mobile Internet data of my mobile phone?

The call rate is calculated based on the voice rate of the user’s current plan. It will not occupy the Internet transmission capacity.

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