Can I use the DoCoMo line's "Cheap SIM" with a feature phone? : Cheap SIM Q&A

Can I use the Docomo line "cheap SIM" provided by MVNO (mobile virtual network operator) with a feature phone (mobile phone)?

I can make calls and SMS. Data communication is possible with sp-mode mobile phones, but a SIM compatible with 3G terminals is required. (ITmedia Mobile editorial department Inoue)

Most MVNO communication services are based on the assumption that they will be used on smartphones, tablets, or mobile Wi-Fi (wireless LAN) routers. Even if you look at each MVNO's "terminal operation check" page, feature phones (also called "keitai" or "garakei") are not listed in the list of compatible models.

Can a feature phone be used with an MVNO SIM card? "This is a question that anyone can ask." Based on my research on the premise of using NTT Docomo's feature phone with the MVNO service (with voice calls, of course) that uses the Docomo line.

I found these things. The details are as follows.

Voice calls and SMS are basic functions of a mobile phone. Therefore, even feature phones can be used without any special settings. If you use a docomo feature phone with the docomo line MVNO service, you do not need to unlock the SIM.

i-mode is an ISP (Internet connection service) ) is one of Therefore, it is possible to manually add an APN (Access Point Name: information to identify the connection destination) even with i-mode mobile phones. In the past, there were other companies' services that used this function (reference article).

If you enter the MVNO APN here, you can browse the web with the i-mode browser--I tried it with the "F-07F" and "Rakuten Mobile" call SIMs, but I couldn't connect. It's over. In the i-mode connection settings, you cannot select a user ID, password, or authentication type, so it may be unavoidable...

Then, user ID and password・I thought it would be possible to connect with "Access point mode" (a function called "Wi-Fi tethering" in the smartphone era) that can also set the authentication type.

Then...it didn't connect. In access point mode, I was able to connect not only with DoCoMo's "mopera U", but also with other ISPs that support FOMA (3G), so I had high hopes... Perhaps the fact that i-mode communication is required to enable access point mode may be stuck.

In case this happens, I made the F-07F itself a Bluetooth modem and dialed up from a PC to connect. Apparently, when using an MVNO SIM card with an i-mode mobile phone, it seems that data communication is not possible by any means.

These models have the same mobile connection settings as Android smartphones and tablets. Therefore, data communication is possible by adding the APN information published by each MVNO. However, functions that depend on the sp-mode network such as "docomo mail" cannot be used.

F-05G and SH-06G are FOMA (3G) terminals, so you need an MVNO service SIM card that can be connected to 3G terminals. Please note that some MVNO services can only be connected with LTE terminals.

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