It is common to operate smartphones with each phone number, but in recent years, products compatible with "DSDS" and "DSDV" that can register two or more phone numbers with one smartphone have appeared. ..
Especially for those who have two phone numbers, one for business and one for private use, but it is a hassle to carry two smartphones each time. Now, let's introduce smartphones that support DSDS / DSDV.
What are "DSDS", "DSDV" and "DSDA" on smartphones?
"DSDS" stands for "Dual SIM Dual Standby", and you can receive a call regardless of which phone number you receive by inserting two SIM cards. However, if you are talking on one SIM, you cannot communicate with the other SIM card.
With DSDS smartphones, 4G communication can only be used with one SIM and the other with 3G communication.
"DSDV" means "dual SIM dual VoLTE". In addition to being able to stand by for calls on both SIMs, you can receive calls on the other SIM while communicating with one SIM. However, if you are talking on one SIM, you cannot communicate on the other SIM.
Unlike DSDS, DSDV can use 4G communication with both SIMs.
"DSDA" stands for "Dual SIM Dual Active", which means that you can insert two SIMs into one smartphone and receive calls with either phone number. It is also possible to make a call with one SIM and perform data communication with the other SIM.
DSDA enables 4G communication with both SIMs.
There is also "DSSS (Dual SIM Single Standby)". This allows you to insert two SIM cards into one smartphone, but only one can enable communication. Data communication and incoming calls cannot be made with a SIM that is not enabled.
In recent years, I have the impression that there are not many models that support only DSSS, but if you want to operate a smartphone using two SIMs, check in advance which standard the model you want to use supports. Let's go.
Also, among smartphones that support dual SIM, in addition to the model that can insert two SIM cards, one SIM card and the other can be registered as "eSIM" integrated with the main body. There is a model that can be done.
[Reference] What are Rakuten Mobile SIM and Dual SIM (DSSS, DSDS, DSDV, DSDA)? Please tell me the type of SIM.
DSDS compatible SIM-free smartphone [iPhone 12 series]
In the iPhone series, iPhone XS / iPhone XS Max, iPhone XR and later models support dual SIM using one SIM card (nano-SIM) and eSIM. Also, with iPhone 12 series, if you install iOS 14.5 or later, you can also perform 5G communication in dual mode.
All models of the iPhone 12 series are equipped with A14 Bionic, a high-performance chipset developed by Apple. The iPhone 12 / iPhone 12 mini has a dual camera, and the iPhone 12 Pro / iPhone 12 Pro Max has a triple camera.
The iPhone series is also highly compatible with other Apple products such as the Mac series and iPad series. If you install iOS 14.5 or later, you can also use the function that you can unlock with Face ID while wearing a mask by using Apple Watch together.
[Reference] Apple iPhone 12
DSDS compatible SIM-free smartphone [OPPO Reno 5 A]
"OPPO Reno 5 A" is handled by Rakuten Mobile / Ymobile as a communication carrier, and SIM-free models are also sold by IIJ mio / AEON Mobile / QT mobile.
The SIM card slot is an exclusive dual SIM slot, and you can insert either nanoSIM in "SIM1" and either nanoSIM or microSD in "SIM2". It also supports eSIM registration.
The display is about 6.5 inches, the screen occupancy is as high as 90%, and it also supports refresh rates up to 90Hz. The characteristic is the camera performance, which has a four-lens configuration of about 64 million pixels for the main, about 8 million pixels for the ultra-wide angle, about 2 million pixels for monochrome, and about 2 million pixels for the macro.
With 6GB of memory / 128GB of storage, the chipset consists of Qualcomm Snapdragon 765G and middle specs. It also supports the Osaifu-Keitai function (FeliCa) and is waterproof and dustproof. The selling price may fluctuate slightly depending on the sales channel, but it is relatively easy to get at around 40,000 yen.
[Reference] OPPO Reno5 A
DSDS compatible SIM-free smartphone [Xiaomi Mi 11 Lite 5G]
"Xiaomi Mi 11 Lite 5G" is also a SIM-free smartphone sold by MVNO companies, consumer electronics mass retailers, and EC sites. It is an exclusive slot for SIM slot 1 + SIM or microSD card.
The display is a 6.55 inch organic EL panel, and the camera has a three-lens configuration with a main 64 million pixels / ultra wide angle 8 million pixels / telemacro 5 million pixels. Qualcomm Snapdragon 780G is used for the chipset, the memory is 6GB and the storage is 128GB.
The characteristic is a fairly thin and light design with a thickness of 6.81 mm and a mass of 159 g. Although it is equipped with a relatively large display, it is a product that can be expected to be easy to hold and handle.
Unusual for a SIM-free smartphone, it supports the Osaifu-Keitai function (FeliCa), and can be unlocked by the fingerprint sensor with built-in power button on the right side of the main unit and face recognition.
[Reference] Xiaomi Mi 11 Lite 5G
* Data is from the editorial department as of early July 2021. * Although every effort has been made to ensure the information, we do not guarantee the completeness or accuracy of the content. * Please use the product at your own risk.
Sentence / Fumihiko Sato
