Since the cover area is different depending on the telecommunications carrier (carrier), the story of "a career that is strong in mountain climbing" tends to be a topic.However, with the recent booming of the MVNO market, the appearance of cheap plans from major companies, and the emergence of ESIM standards, multiple carriers can be handled in one device.
Despite my personal affairs, I changed my smartphone telecommunications carrier (carrier) to Rakuten Mobile.One of the reasons for the transfer is the cheapness of maintenance costs.Rakuten Mobile's communication fee is almost half price compared to a major carrier used before.On the other hand, it is also true that the narrowness of the service area was a large anxiety.
山でのリスクも考慮しつつ選択した楽天モバイル。家計の節約になったのは間違いないWhy did the author often go to areas with poor radio waves on travel or climbing dare to choose Rakuten Mobile?In fact, there was a way to call the au and docomo radio waves at the same time.
Where are the really strong careers on the mountains, it's a topic that everyone is interested in.At least about 10 years ago when I worked for a travel agency specializing in mountain climbing, it was overwhelmingly like a docomo.However, from a friend and wife who moved to the mountains of Toyama in 2021, I heard that there are many recent forestry officials.
Although it is at the level of personal impressions, taking into account the hearing of mountain friends and information on the Internet, the conclusion that "au is dominated by DOCOMO and SoftBank is followed" is not far away.Is it not?After all, if you can use one of the three major carriers networks, it can be said that great dissatisfaction is hard to embrace.
11月に富山の友人と登った金剛堂山。楽天はもちろん、auの回線も途切れ途切れだったが。Meanwhile, after understanding the risks unique to an emerging carrier with almost zero reviews, I decided on Rakuten Mobile for the transfer destination.This is because in addition to the cheapness, it has the characteristic of "roaming au radio waves".
For those who do not know roaming, it is brief that it is out of the service area of the service business operator contracted by business operators in mobile phones, PHS, Internet connection services, etc.Also, if it is in the area of the partner business operator, you can use the same service as the original business (quoted: wikipedia).In the case of Rakuten Mobile, which is affiliated with au, you can connect to the Internet or call as long as the au radio waves reach outside Rakuten areas.
However, from a carrier who borrows communication infrastructure to other companies, the roaming service may be just a "customer panda (only for Rakuten)".In fact, Rakuten will have to pay a lot of line usage fees to au, so we plan to narrow the roaming range as soon as the company's communication network is in place.It has already been discontinued mainly in urban areas such as Tokyo and Osaka Prefecture, and it is possible that the au area will not be available in the mountains in the future.
The risk of not connecting radio waves is not limited to Rakuten Mobile.It is a new place to remember that some users could have had a large -scale communication failure in docomo the other day and could no longer perform voice calls and data communication for 12 hours.Regardless of whether the line cannot be used is the default route or trouble, if you think that your mobile phone is not available in the event of an emergency climbing ...
One answer to such a situation is the "dual SIM" of the smartphone.For example, in the case of an iPhone, if it is a model after XS/XS Max/XR, a digital SIM built into a terminal called ESIM in addition to a card -like physical SIM can be used.By using this function, one terminal will be connected to the radio waves of multiple carriers.
My iPhone inserts LinkSmate physical SIM in the sub, in addition to the main Rakuten Mobile ESIM.Linksmate is one of the companies that provides a cheap SIM called MVNO, but since it uses docomo infrastructure for the network, stable communication can be expected in the mountains.In other words, with this combination, it is a dimension that can catch the three lines of Rakuten/au/docomo, including roaming.A smartphone that is more resistant to communication disorders and is more convenient in the mountains, and has a convenient smartphone that has been completed in the mountains.
ドコモのネットワークかつ低価格で維持できることが、サブSIMにLinksMateを選んだ理由By the way, the cost of LinkSmate currently contracted is 165 yen per month.Although the capacity is 100MB because of the cheapest plan, if the data usage per hour is about 18MB, it can be used for more than 5 hours.
On the other hand, there are some points to note when using cheap SIMs.That is, "In the case of a data -only plan, emergency calls such as number 110 are not available."In my environment, it is impossible to send it to 110 if it is in the Rakuten or au roaming area with a normal phone application, but if there is only a docomo radio waves.
Naturally, it is not possible to use the phone because it is only contracted for data, but IP phone applications such as LINE ( *) and Skype are used, so 110th is used because the location of the sender is not displayed.you can't.Keep in mind that when reporting using these apps, you need to directly apply directly to the representative number of the nearest police station.
* Although it is not surprisingly known, LINE can also be sent to the general phone number.In the case of an iPhone, you can use it from LINE app → home → service → see more → LINE OUT (paid)/LINE OUT FREE (free/fixed call to 3 minutes).
In the unlikely event that only the SIM for data is functioning in the event of an accident, it is a good idea to consider using the "110 application" by the National Police Agency.Originally, it is an application for those who have hearing and language obstacles, but after confirming whether the Police Department and the Police Headquarters in Kanagawa Prefecture can be used for climbing, please report any means in case of emergency."And received a powerful answer.In addition to being able to report in chat format using Internet lines, accurate location information and photos of GPS can be sent, so it is considered to be a suitable system for accidents during mountain climbing.
110番アプリの練習モード。右側の「いいえ」を押すとトップに戻されるUIは疑問だが・・・Nevertheless, both the rescuer and the rescuers are definitely the smoothest exchange between 110 and 119.For climbing smartphones, it is best to use a plan that can make voice calls for both the main/sub SIM, which emphasizes safety over running costs.If you pay an additional fee even with a cheap SIM, you can use a general telephone app (LinkSmate starts at 517 yen per month), and in recent months, major carriers have started offering ESIM, so theoretically, docomo+au, etc.Luxurious collaboration is also possible.
In this article, we introduced life hacks that use smartphones more conveniently during climbing, such as "How to grasp multiple radio waves of mountains strong in mountains" and "techniques to report to the police with cheap SIMs".However, in actual mountain fields, there are many situations that "docomo, au, Softbank, and of course Rakuten are not connected."Moreover, such a blank area of radio waves may increase in the near future.
The reason is the 3G line stop.Starting with au in March 2022, SoftBank and DOCOMO will end 3G lines by 2026.It is assumed that switching to 4G/5G lines does not reduce the population cover rate, but it is a natural theory that mountainous areas where people do not live in the first place also have low priority to maintenance.Even in the area where 3G has been connected so far, there is no guarantee that radio waves will continue to reach in the future.
山頂など開けたところは電波をつかみやすい場所のひとつ。道に迷ったらピークを目指そうAs a matter of fact, au smartphones have become unable to use 3G lines since the iPhone8 era.If you do not change the settings and Softbank, you will not be connected to 3G, and Rakuten Mobile does not have your own 3G base station.For this reason, it is not necessary to worry very much if you do not feel inconvenient at the moment, but there are still many mountain trails and mountain huts that still can only enter 3G.Users who love 3G smartphones and garage as lifelines have reached a phase that should be considered as soon as possible.
Compared to a long time ago, I was a mountain tour conductor, and what I could do for a smartphone has improved dramatically.Purely technology advances are pleased, and it is true that they have expanded how to enjoy climbing and safety.However, I guess the climber's dependence on the smartphone has been increasing naturally.
After all, it is dangerous to entrust part of the lives to the presence or absence of Internet lines.It is one of modern climbing literacy to learn the skills and equipment of mountain climbing that does not rely on smartphones, but also to roll up the possibility that radio waves will not enter before entering the mountain.
スマホのトラブルを念頭に置き、紙の地形図やガイドマップは必ず装備したい。ヤマケイオンラインからも簡単に印刷できる