"Dual SIM smartphone" Recommended 4 selection giant carriers and cheap SIMs convenient [2019 latest version]

　"SIM rock -free" smartphone that can be used regardless of career.Many of them are "dual SIM" models that can equip two SIM cards.

　Being able to use two SIM cards at the same time means that voice calls are a major carrier with a regular call (quasi), and data communication is used with MVNO's "Cheap SIM" card "or" Private line SIM card and work.It is possible to use the SIM card for the lines at the same time. "

　In this article, we will introduce recommended models based on that while checking points to be aware of when choosing a dual SIM smartphone.

Which carrier can you use?Check "frequency band (band)"

　As mentioned earlier, almost all dual SIM smartphones are SIM lock -free and can be used in any carrier.However, to use it more comfortably, it is necessary to check the "frequency band (band)" of the radio wave that the smartphone is compatible with.

　The LTE (4G) service provided by a major Japanese carrier uses the Band below.Those with underlines are BANDs where the carrier is mainly positioned (can be used in a wider area).

　These bands are used in MVNOs, which rent radio waves from each carrier and provide services.People who say, "I use cheap SIMs instead of major carriers!"

　You can check the Band corresponding to the smartphone on the model website or catalog.If it is not corresponding to a specific carrier, it may be written by annotation, so check it out.

au line users are effectively required!Check the support status of "VOLTE"

　There are two ways to make a phone call with a smartphone: "line exchange" that uses audio lines and "Volte", which uses LTE (4G) data communication lines.Almost all recent SIM lock -free smartphones support both line exchange and VoLTE.

　However, there are only a few models that VOLTE will be enabled only when it does not support VoLTE or only when using a line of a specific carrier.

　In particular, VOLTE is required for voice calls on au network (SIM card may be replaced).If you want to use an MVNO service SIM card that uses au or au lines, be sure to check if you can use "au volte" on the desired model.

Can you wait at the same time with two lines?Check "DSDS" and "DSDV"

　Dual SIM smartphones can put two SIM cards at the same time.However, whether you can wait for the phone at the same time with the two SIM card (line) depends on whether it supports "DSDS" or "DSDV".

　DSDS is an abbreviation of "Dual Sim Dual Standby" and is a function that allows you to wait for calls and SMS (short message) at the same time with two SIMs.With a recent dual SIM smartphone, it supports at least simultaneous waiting for "LTE + 3G" and "3G + 3G".

　DSDV stands for "Dual Sim Dualte Standby" and is a function that allows you to wait for VoLTE calls with two SIM cards.If two SIM cards support VoLTE calls, I would definitely like to choose the smartphone that supports it.

Maybe the second SIM card will not be included!? Check "MicroSD slot"

　The dual SIM smartphone has two SIM cards ... but those who plan to use it with microSD need to be careful.

　Most Android smartphones are compatible with microSD, which is the same for dual SIM models.However, some dual SIM smartphones have the second SIM card and microSD "excretion".In the case of such a model, you must choose whether to take a microSD or the second SIM card.

　If you say "Neither can be thrown away!", Choose a model with a completely independent SIM card slot and microSD slot.

The recommended model is this!

　Based on the above four points, we will introduce four recommended dual SIM smartphones.

ZenFone 6：DSDV＋独立したmicroSDスロットを備えるハイエンド機

　ASUS SIM lock -free smartphone, one of the few high -end models in SIM lock free.VOLTE calls can be used in all carriers and supports DSDV.In addition, it has an independent microSD slot.

　There are only high -end models, the functions around the camera are substantial, and the display is large, so you can enjoy various things.Don't miss the FM radio.

　General sales channels such as consumer electronics retailers have two models, "6GB memory / 128GB storage" model and "8GB memory / 256GB storage".750 yen.Although it is a high price, the functional satisfaction is particularly outstanding.

AQUOS sense3：シャープの定番ミドルレンジがDSDVに対応

　A SIM lock-free model "AQUOS SENSE3 SH-M12" sold by consumer electronics retailers and MVNOs is compatible with dual SIM and DSDV.Domestic manufacturers are valuable DSDV -compatible terminals and support VoLTE calls on domestic carrier lines.

　The out camera has a dual configuration, but it is not a combination of "high pixel main + low pixel portrait", which is common in middle range terminals, but is a standard camera + wide -angle camera. Both have 12 million pixel sensors.Recommended for those who have a high -pixel dual camera in the middle range.The in -camera also has enough image quality with 8 million pixels.

　The selling price depends on the sales channel, but it costs around 30,000 to 40,000 yen including tax.Although it is reasonable as a smartphone, it has "Osaifu -Keitai" and a waterproof and dustproof body.

HUAWEI nova 5T：AIカメラがスゴイデュアルSIMスマホ

　Huawei's latest SIM rock -free smartphone sold by consumer electronics retailers and MVNOs.

　The biggest feature of this model is that the out camera has a quad (4 eyes) configuration.The four cameras consist of "main", "super wide angle", "macro (proximity shooting)", and "depth measurement (TOF)", so you can not only shoot vast scenery, but also shoot flowers and insects.It has a reputation for scenes using AI (artificial intelligence), and you can take beautiful photos without thinking about difficult things.

　It supports DSDV as a dual SIM smartphone.VoLTE calls can be made on the line of all carriers including au.Although it is not compatible with microSD, the built -in storage is increased to 128GB, so you do not need to worry about that even if the data is increased.

　Due to the high -end model, the selling price including tax is slightly higher, in the middle of 50,000 yen and less than 60,000 yen, but it is one of the good options considering the enhancement of functions.

OPPO Reno A：4万円程度で手に入る快適ミドルハイスマホ

　It is a SIM rock -free middle range smartphone developed by China OPPO as a model for the Japanese market, and supports dual SIM and DSDV.VoLTE calls can be made on the line of all carriers including au.

　The specifications are specifications, with the latest processor "Snapdragon 710" for the middle range, the main memory is 6GB, the built -in storage is 64GB (128GB only for Rakuten Mobile), which is a high specification compared to other middle range smartphones.It is attractive.It also has a microSD slot, but be aware that it will be exclusive with the second Nano SIM card.

　The selling price is around 40,000 yen including tax.Considering the specifications and the functions to be mounted, it is a bargain model of this season.