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[Latest] Does b-mobile have a good reputation? Thorough explanation of merits and precautions! | GetNavi web GetNavi
Many people who are considering a cheap SIM contract may want to know about the reputation of the cheap SIM "b-mobile".
In conclusion, the characteristics of people who recommend b-mobile are as follows!
This article introduces the merits and precautions of b-mobile along with word of mouth and reputation.
Advantages of b-mobile Precautions for b-mobileWe also explain in detail how to apply for people who fit the characteristics of people who recommend b-mobile.
It also summarizes frequently asked questions about b-mobile, so please read it to the end and consider it!
Great value cheap SIM with large capacity & free call Recommended for those who want to use cheap cheap SIM anyway. Cheap SIM service provided by a long-established telecommunications company with peace of mind.See b-mobile in detail
table of contentsb-mobile is a recommended cheap SIM that can be used from 1,089 yen per month
b-mobile is a cheap SIM service provided by Japan Communication that can be used at a discount with a 5-step rate plan.
Japan Communication is a long-established communication line company that has provided services as a model operator of MVNO.
First, let's check the outline of what kind of service b-mobile is.
| Communication line | [DOCOMO line] ・ PREMIUM 4G ・ LTE ・ LTE (800MHz) ・ FOMA [SoftBank line] ・ SoftBank 4G LTE ・ SoftBank 4G ・ SoftBank 3G |
|---|---|
| Monthly charge | ・ Plan with voice call: 1,089 yen ~ ・ Data communication plan: 209 yen ~ |
| Initial cost | 3,300 yen |
| Cancellation money | none |
| Measured value | Average downlink speed: 46.08Mbps Average uplink speed: 16.06Mbps |
| campaign | none |
* All prices include tax * As of February 2022, quoted from everyone's internet line speed data
You can use b-mobile by selecting your favorite carrier from the two lines of DoCoMo and Softbank.
Since the minimum usage period is not set and there is no cancellation fee, it can be said that it is a cheap SIM that is easy to use.
In addition, you can use it at a low price of 1,089 yen for a plan with voice call and 209 yen for a SIM dedicated to data communication.
Since you can operate a SIM dedicated to data communication at a low price of 209 yen, it may be good for use with sub-machines and tablets!
We will explain the price plans and service contents of b-mobile in more detail later.
See b-mobile in detail
[Conclusion] Characteristics of people who recommend b-mobile
In conclusion, b-mobile is a recommended cheap SIM service for people who meet as many of the following items as possible.
I will explain why b-mobile is recommended for people like the above, along with its merits and precautions.
Three merits of b-mobile and good reviews and reputation
The advantages of b-mobile are the following three.
I will explain in an easy-to-understand manner what each content is.
With b-mobile, you can use the SIM plan with voice call from 1,089 yen per month.
In addition to the SIM with voice call "990 Just Fit SIM", it is also characteristic that there is a price plan called "190Pad SIM", which is a SIM dedicated to data communication!
First, let's check how much each monthly fee can be used.
| capacity | DoCoMo | Softbank |
|---|---|---|
| Up to 1GB | 1,089 yen | 1,089 yen |
| Up to 2GB | 1,419 yen | 1,859 yen |
| Up to 3GB | ||
| Up to 4GB | 1,969 yen | 2,629 yen |
| Up to 5GB | ||
| Up to 6GB | ||
| Up to 7GB | 2,849 yen | 3,509 yen |
| Up to 8GB | ||
| Up to 9GB | ||
| Up to 10GB | ||
| Up to 11GB | 3,949 yen | 4,829 yen |
| Up to 12GB | ||
| Up to 13GB | ||
| Up to 14GB | ||
| Up to 15GB |
* All prices include tax
| capacity | Data communication SIM (DOCOMO SoftBank) | SIM with SMS (DOCOMO only) |
|---|---|---|
| Up to 100MB | 209 yen | 352 yen |
| Up to 1GB | 528 yen | 671 yen |
| Up to 2GB | 935 yen | 1,078 yen |
| Up to 3GB | ||
| Up to 4GB | 1,595 yen | 1,738 yen |
| Up to 5GB | ||
| Up to 6GB | ||
| Up to 7GB | 2,409 yen | 2,552 yen |
| Up to 8GB | ||
| Up to 9GB | ||
| Up to 10GB (initial setting upper limit) | ||
| Up to 11GB | 3,608 yen | 3,751 yen |
| Up to 12GB | ||
| Up to 13GB | ||
| Up to 14GB | ||
| Up to 15GB |
* All prices include tax
I will briefly explain what kind of plan each is.
990 Just Fit SIM is a pay-as-you-go rate plan with voice calls.
The pay-as-you-go system is a system in which the monthly charge is determined according to the amount of data used.
With a flat-rate rate plan, you can freely use up to the upper limit by choosing a capacity plan, but even if you do not use it often, you will be charged the same rate!
However, if it is a pay-as-you-go system, it is a mechanism to pay a fee suitable for the capacity in the month when it is used infrequently.
Even if the frequency of use varies, the rate plan that can be used at a reasonable price can be said to be a pay-as-you-go system.
However, in the case of b-mobile, be aware that the speed limit will be applied after 15GB is used up!
If you exceed the capacity, you will have to use the service with the speed limit until the end of the month.
This person was previously contracted to b-mobile and seems to have re-entered the 990 Just Fit SIM.
With the 990 Just Fit SIM, you can use up to 1GB at a low price, and even if you suddenly need data capacity, you can use it up to the upper limit of 10GB or 15GB without problems.
190PadSIM is a pay-as-you-go data communication SIM plan.
As you can see from the table, you can use it at the lowest price of 209 yen, and even with the SMS function, it is as cheap as 352 yen.
However, since it does not support voice calls, it is better to think of it as a rate plan for sub-machines and tablets rather than the main machine!
Please note that the SMS function itself cannot be used with SoftBank lines or iPads.
Also, as with the 990 Just Fit SIM plan, after the capacity is exceeded, the speed will be limited and high-speed data cannot be added.
The biggest feature of b-mobile is that all plans are charged only for what you use.
Anyway, it can be said that it is a very useful mechanism for those who want to save on smartphone charges.
In addition, there is a system that other companies' plans do not have, which allows you to set an upper limit on the data capacity.
A common pay-as-you-go system is that you exceed your expected data capacity and incur extra monthly charges.
However, if you can set the upper limit like b-mobile, you do not have to worry about it.
It is not just a pay-as-you-go system, but a rate plan with a function that can prevent overuse, so you can rest assured.
b-mobile can cut the call charge by half by using the dedicated phone application.
The normal call charge is 22 yen per 30 seconds, but if you make a call via the b-mobile phone app, you can make a call for 11 yen for 30 seconds.
| Call method | Call charge |
|---|---|
| From the calling app | 11 yen / 30 seconds * 10 yen / 30 seconds depending on the call destination * When making a call with "0063" 10 yen (tax exempt) / 30 seconds |
| From other than the calling application (normal charge) | 22 yen / 30 seconds |
* All prices include tax
The b-mobile phone app is also convenient because the contact information of your smartphone is automatically reflected.
You don't have to re-register your phone number, just install the app and you're ready to go!
This person seems to have actually tried to make a call using b-mobile's dedicated phone application.
If you use the b-mobile phone app, you can make a call at half the normal charge of 30 seconds and 22 yen.
The more often you make a call, the more profitable you will be, so when making a call, make a call via the app as much as possible.
b-mobile is characterized by low call charges, but we also offer an unlimited call option for people who make frequent calls.
If you pay 550 yen a month, you can add an all-you-can-eat option for 5 minutes.
The 5-minute all-you-can-eat option is a service that allows you to make free calls as many times as you like for up to 5 minutes.
If you use it together with the b-mobile phone app mentioned above, you can make a call for 11 yen per 30 seconds even if it exceeds 5 minutes!
This person seems to be using b-mobile's 990 Just Fit SIM up to 1GB and adding the option of unlimited use for 5 minutes.
The 990 Just Fit SIM costs 1,089 yen for up to 1GB, so even if you add an all-you-can-eat option for 550 yen per month, you can keep your payment within 1,700 yen.
In addition to the 5-minute all-you-can-eat, b-mobile offers various voice options such as the following!
This is an optional service that makes it easy to make overseas calls.
Please note that application procedures are not required at SoftBank, but docomo does.
This is an optional service that allows you to record a call that you could not pick up and listen to your answering machine later.
SoftBank may be charged or free.
If the number of saved items is 100 and the storage period is one week, a monthly fee of 330 yen will be charged, and if the number of stored items is 30 and the storage period is 72 hours, it will be free!
In the case of DOCOMO, a monthly fee of 330 yen is always required.
In either case, please apply for it in order to use it.
This is an optional service that allows you to transfer an incoming call to a designated mobile phone or landline phone.
No application procedure is required at SoftBank, and required at DoCoMo.
This is an optional service that makes it easy to make calls to Japan from overseas, and is available only to DOCOMO.
A separate application procedure is required to use it.
This is an optional service that allows you to put the original party on hold and switch to the incoming call later when another call comes in during a call.
An application procedure is required, and a monthly fee of 220 yen will be charged.
This is an optional service that allows you to specify, confirm, and delete nuisance call numbers.
No application procedure is required to use it.
You will be able to set voice options, etc. from other phone terminals.
No application procedure is required to use it.
When another call comes in during a call, this is an optional service that allows you to put the previous party on hold and give priority to the caller later.
An application procedure is required, and a monthly fee of 220 yen will be charged.
It's the same service as DoCoMo's call waiting!
This is an optional service that allows you to talk with up to 6 people by making another call during a call.
An application procedure is required, and a monthly fee of 220 yen will be charged.
This is an optional service that allows you to reject the phone number when you receive a nuisance call.
In addition to the application procedure required, a monthly fee of 110 yen will be charged.
5 points to note about b-mobile and bad reviews / reputation
When applying for b-mobile, you may regret that you are only aware of the benefits.
There are some points to note besides the benefits, so be sure to check before applying.
I will explain in detail what kind of points should be noted for each.
While many people say that b-mobile can be used cheaply, there are reviews that people are worried about the slow communication speed.
This person is asserted that the communication speed of b-mobile is slow.
If the downlink speed is 9 Mbps, those who used major carrier lines may be curious.
Also, the Ping value is important when playing online games, but b-mobile with a Ping value of 76ms is not suitable because it causes a lag.
We compared the average speeds of b-mobile and other companies' cheap SIMs with reference to the data of "Minna no Net Speed".
| Service name | Average speed |
|---|---|
| Ymobile | Down speed: 64.2Mbps Up speed: 15.62Mbps |
| UQ mobile | Down speed: 49.97Mbps Up speed: 10.14Mbps |
| b-mobile | Down speed: 46.08Mbps Up speed: 16.06Mbps |
| IIJmio | Down speed: 45.56Mbps Up speed: 10.82Mbps |
| OCN Mobile ONE | Down speed: 39.94Mbps Up speed: 9.23Mbps |
| mineo | Down speed: 38.27Mbps Up speed: 8.58Mbps |
| Aeon Mobile | Down speed: 29.28Mbps Up speed: 8.57Mbps |
| BIGLOBE mobile | Down speed: 18.94Mbps Up speed: 8.65Mbps |
* As of February 2022, quoted from everyone's internet line speed data
As mentioned above, the measured value of b-mobile is relatively fast, but it is not the fastest.
However, it's a speed that is not a problem as long as it is within the range of normal use!
The communication speed required for daily use is summarized in the table, so let's compare it with your own usage.
| Use | Required speed |
|---|---|
| Receive email LINE receive Browse website | Downstream speed: 1Mbps |
| Watch YouTube video (720p) Video call | Downstream speed: 3Mbps |
| Watch YouTube video (1080p) | Downstream speed: 5Mbps |
| 4K video playback | Downstream speed: 25Mbps |
| send e-mail | Upstream speed: 1Mbps |
| Posting photos to SNS Video calling | Upstream speed: 3Mbps |
| Video posting to SNS Sharing data files | Upstream speed: 10Mbps |
Looking at the above table, you can see that it can be used without problems for most purposes if it is about 25 Mbps.
Since the measured speed of b-mobile clears the conditions both up and down, there is almost no problem in everyday use!
The communication speed may not be stable depending on the time of day and environment, but you will not feel any inconvenience in normal use.
With b-mobile, you cannot receive support at physical stores, which is possible with major carriers.
I think that many people who are considering a contract want to apply while having the staff directly instruct them, or directly approach each consultation.
People who switch from major carriers may find it inconvenient because b-mobile does not receive all direct support at the store.
However, the fact that you cannot receive support from physical stores is not a disadvantage peculiar to b-mobile, but a disadvantage that can be said for all cheap SIMs.
If you want to use a cheap SIM, think that it can't be helped and get used to online support.
b-mobile is not sold as a set with the terminal.
Therefore, if you do not apply after preparing the terminal yourself, you cannot use it.
For those who are thinking "let's buy a device together at the time of contract", it will be a big disadvantage.
Certainly, there are many cheap SIMs that can sell terminals as a set, not to mention major carriers.
If you are thinking of purchasing a terminal at the same time as a line contract, consider choosing a cheap SIM other than b-mobile.
If you prepare your own device, you can use the device you are using at docomo Softbank or the SIM fleece smartphone purchased at a home electronics retail store or Apple Store as it is with b-mobile!
If you do not have a terminal, prepare it in advance and then apply for b-mobile.
b-mobile also has the disadvantage that you cannot use carrier-specific services such as carrier mail and LINE ID search.
If you want to use e-mail, you have to get a free address such as Gmail.
If you used carrier email for registration information of various services, the time and effort to change it will increase accordingly.
This person seems to have changed b-mobile from a data-only SIM to a voice-enabled SIM and switched from a sub device to a main device.
Carrier services such as LINE ID search cannot be used with b-mobile.
However, it can be said that it is a recommended cheap SIM because it can be contracted at a good price for those who do not use the carrier's service.
b-mobile does not have great deals such as cash back and monthly discounts.
As this person describes, major plans of other companies are implementing various campaigns such as no initial fee.
There are many cheap SIMs with few campaigns, but not many haven't done so at all.
However, the monthly charge for b-mobile is set cheaper by that amount, and you can use it at a reasonable price.
The b-mobile official website also states as follows.
"We offer a cheap SIM service based on the concept of saving a lot of monthly charges, so there is no cash back. Instead, we offer the service at a monthly fee that is cheap enough to pay for the cash back. 』\
At first glance, the campaigns carried out by other companies' cheap SIMs seem to be profitable, but if you do not include the initial cost and monthly fee, you will not know if you can actually use it cheaply.
In that respect, with b-mobile, it can be said that it is easy to judge that it can be used at a discount from the monthly fee because there is no campaign.
Although b-mobile does not have a great deal, even those who value the price will be satisfied.
Procedure from application to use of b-mobile
After understanding the merits and precautions of b-mobile, let's start the application procedure.
The following items are required when applying for b-mobile.
Please prepare everything in advance so that the procedure can proceed smoothly.
Once you have all of the above, follow the steps below.
Here, we will explain the application procedure on the assumption that you will switch from a major carrier of docomo, au, or Softbank!
Click here to apply for b-mobile
If you want to transfer your phone number as it is when you transfer, you need to get an MNP reservation number.
We have summarized the contact information for obtaining an MNP reservation number for 3 carriers.
| Career | Phone number / URL | Reception time |
|---|---|---|
| DoCoMo | DoCoMo mobile phone: 151 Landline phone: 0120-800-000 | 9:00 to 20:00 |
| My docomo | 24hours | |
| au | Common to au mobile phones / landlines: 0077-75470 | 9:00 to 20:00 |
| My au | 24hours | |
| Softbank | Softbank mobile phone: * 5533 Landline phone: 0800-100-5533 | 9:00 to 20:00 |
| My SoftBank | 24hours |
When switching from au, in addition to the MNP procedure, the SIM unlock procedure for the terminal is required.
SIM lock is a mechanism that locks the terminal purchased by the carrier so that the SIM card of another company cannot be used!
b-mobile supports docomo and Softbank lines, but does not support au lines.
Therefore, in the case of au, SIM unlock procedure is always required.
SIM lock can be unlocked at a nearby au shop or My au, so be sure to do it if you are an au user.
Once you have the MNP reservation number, let's move on to the b-mobile application procedure.
First, access the desired plan page on the b-mobile official website, and then click "Purchase / Apply".
After changing pages, please log in to your My Page account as it is.
Next, select the relevant item according to whether you have the start package and click "Next" to display the input form!
From the input form, enter the necessary information such as your name and address.
When entering, the address must be in the same location as the identity verification document.
At this point, enter the MNP reservation number you have prepared in advance.
If you forget to enter the MNP reservation number, it will automatically switch to the new phone number.
If you want to use the phone number as it is, be sure to enter the MNP number.
In addition, the MNP reservation number can only be used if it remains for 8 days or more until the expiration date.
If you cannot afford the period, you will need to re-acquire the MNP reservation number and then perform the procedure again.
After completing all the items, let's move on to uploading the identity verification documents prepared in advance.
Depending on your identity verification documents, you may also have to upload supplementary documents such as resident cards and utility bill receipts!
Take a picture of your identity verification document and upload it so that you can clearly see what is written.
If the input details and identity verification documents are correct, the SIM card will be shipped in about 4 days for DoCoMo lines and about 3 days for SoftBank.
As a shipping notification, you will receive a "Product Shipment Notice" and a "Request for MNP Line Switching Application"!
After confirming the shipment, wait until the SIM card arrives.
When the SIM card arrives, perform the MNP line switching procedure.
Please log in to my page of b-mobile before performing the MNP line switching procedure.
- Log in to my page of b-mobile
- Tap the "MNP line switching" button
- Enter the 13 digits after the 2 letters of the alphabet on the back of the SIM card
- "Notice of completion of MNP line switching" arrives at the e-mail address of the b-mobile ID and is completed.
Upon completion of the MNP switching procedure, cancellation with the previous carrier will be established.
To connect to the Internet, you need to set the terminal profile and APN.
- Insert the SIM card into your iPhone and connect to WiFi
- Tap the profile button of the corresponding carrier from Safari
- "Allow" downloads
- Tap "Profile downloaded" from the settings app
- After tapping install, enter the passcode
- Tap "Next"
- Select "Install" that is displayed after tapping "Install" on the upper right.
- Tap "Done"
- Display the setting screen
- Tap "Mobile networks" from wireless and networks
- Tap "Access point name"
- Select b-mobile on the APN screen
- Enter the specified setting value in the edit screen of the access screen [APN setting value] Name (optional): b-mobile APN: bmobile.ne.jp User name: bmobile@4g Password: bmobile Authentication type: PAP or CHAP PDP Type: IP
- After inputting, tap "Save" from the menu key
- Select the saved APN on the APN screen and you're done
After restarting your device, make sure you are connected to the internet with WiFi turned off.
If you can confirm the internet connection, you can start using it!
Don't forget to download the "b-mobile phone" app, which cuts the call charge by half, at this time.
Frequently asked questions about b-mobile
Finally, we will answer frequently asked questions about b-mobile in a Q & A format.
Let's explain each of the above three items in detail one by one.
b-mobile is a recommended service for those who want to use a cheap SIM at a reasonable price and those who have variations in monthly data usage.
It's a cheap SIM recommended for people who fit many of the following items, so let's check it while looking back on how to use it!
For details, see "[Conclusion] Characteristics of people who recommend b-mobile."
While b-mobile has many merits such as low monthly charges, there are some points that are worrisome such as slow communication speed.
The advantages and precautions of b-mobile are as follows!
The merits of b-mobile are explained in detail in "3 merits of b-mobile and good reviews / reputation", and the precautions are explained in detail in "5 precautions of b-mobile and bad reviews / reputation".
If you have any questions about b-mobile, you can contact us by chat or email.
Please note that as of February 2022, normal telephone support is suspended.
If you want to use chat, go to the official b-mobile website and it will be displayed in the lower right corner!
If you would like to contact us by e-mail, please access the following URL.
| Inquiry status | Inquiry form URL |
|---|---|
| Customers before application | Here |
| Customers in use | Here |
Chat will be answered immediately, but email will take about 3 business days to respond.
If you want to get an answer immediately, chat, or if you're not in a hurry, contact us by email.
summary
This time, for those who are considering a contract for b-mobile, we have explained the features, merits, precautions, and features of recommended people.
b-mobile has the following three advantages, such as a low monthly charge.
There are some points to note about b-mobile, so let's check them together with their merits.
Considering the above merits and precautions, b-mobile is recommended for the following people.
If you are considering b-mobile, please check the merits and precautions of this article together with the user's reputation, and make an application after determining whether it suits you.
See b-mobile in detail
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