Although Android phones have a strong development momentum at present, no manufacturer has the ability to challenge the dominance of Apple phones, whether it is an international brand Samsung or a domestic brand Huawei, Xiaomi, etc. It is even no exaggeration to say that every iPhone of Apple has become a market favorite. Although the iPhone is classic, it has never launched a dual card dual standby model. So far, the iPhone still stubbornly adheres to the single card strategy. We can't see that the iPhone has any plans to launch a dual card dual standby model. Due to the continuous decline of mobile phone charges, at present, people generally have more than two phone cards. More often, it is normal to use one mobile phone card for online shopping because of a work number, a home number or privacy issues. For a large number of fruit powder, the iPhone has brought some trouble while meeting the basic use needs. It can even be said that most fruit fans have to carry multiple mobile phones because of the single card problem. The persistence of Apple and the obsession of Apple fans have been puzzling many users. However, the development of science and technology is always impressive, and a device called "Double Sharing Number" makes the author's eyes shine. This compact device changes the iPhone into a dual card and dual waiting device.

When I received the Shuangxiang account, the author was slightly surprised at its packaging. After all, the Shuangxiang account is currently online shopping. For online shopping products, such simple paper bag packaging is slightly inadequate for product protection. It is difficult to ensure product safety in case of violent delivery. It is suggested that the manufacturer consider customizing a small paper box package supplemented with the current paper bag, such as the current portable wifi paper package, which is a good choice.

In order to facilitate the user's use, the dual sharing account provides unambiguous accessories. In addition to the product host, it also provides a lanyard. Considering the card holder, it also provides a card pin and SIM card sleeve, which is used to restore the nanoSIM used in the iPhone 6 series to the microSIM used in the dual sharing account.

The double sharing number I experienced is a white shell. According to the author, the manufacturer currently provides black and white colors for users to choose from, which can be selected according to the color matching of their iPhone or according to their personal preferences. A button is provided on the front of the product. The button is printed with Bluetooth logo, and the LED design is below the button. When charging, it will display red here, but in daytime, the LED color here does not appear obvious. The size of the double sharing number is quite small, smaller than the author's thumb. Compared with the one yuan coin, you can feel its size very intuitively, and its weight is very light, which is basically the same as the one yuan coin, only 6.8 grams.

The dual account is powered by a built-in 55mAh lithium battery. In terms of charging, the most popular MicroUSB interface of digital devices is used. A lanyard hole is provided on the opposite side of the charging interface. The dual account can be easily carried by using the lanyard. With the help of the headset hole of the mobile phone, the lanyard for fixing the dual account can be inserted into the headset hole for daily loss prevention and carrying, However, the actual experience of the author found that this way makes the mobile phone slightly inconvenient to use, so the final use plan of the author did not use the lanyard design inserted into the headphone hole. Due to the low-power Bluetooth design, it can be used for 15 days after half an hour of charging, so it is very convenient for daily use, and you don't need to worry too much about the power problem.

The installation of dual sharing number is very simple. The double sharing number is designed with a notch for opening the back cover. The back cover can be opened with a slight force. The SIM card is installed with the pull design used in the phone. The SIM card slot can be opened with a slight force and the installation is completed.

Because it is not a native SIM card holder, the use of dual account must depend on APP at present. From the APP download page of the product, we can know that in addition to supporting iPhone, the dual account also supports Android system. For the iPhone series, it supports iPhone 4S and IOS7.0 and above. On the Android system, due to Bluetooth 4.0, the dual account must be at least Android 4.3. It can also be seen from the APP that the dual account uses the network phone service.

The registration of the dual account is very convenient. The SIM card can be registered when it is placed in the dual account or mobile phone. Note this reminder. At present, the dual account does not support telecommunications networks. For mobile networks, it is recommended that users choose a GSM account or open a corresponding roaming package. Otherwise, roaming charges may be high.

The APP phone function of the dual account is quite perfect. All the basic functions are available, which is no different from the normal use of telephone dialing. The functions of the phone book, call log and dial are very perfect.

The security control of iOS is much better than that of Android system, so each step of calling permission will be displayed accordingly. The author found that the permission of double sharing account calling is necessary. If it is accidentally disabled, it needs to be enabled in the settings to meet the normal use.

The dual sharing account has set the Do Not Disturb mode, which is a bit like the normal flight mode, but is easier to use than the flight mode, and can receive messages normally. In the locked screen state, when a call comes in, a clue will be provided in the notice bar. At this time, the call cannot be answered directly, which is more complicated than the original phone, but it only needs to slide your hand slightly to enter the page of answering the call, so it is more comfortable to use.

In the wifi network, there is basically no delay in the call of the dual account, and the voice call is very clear, which is basically the same as the daily direct phone call. Since my mobile phone is iPhone4S, I used mobile 3G to test the data network, and the call quality is still good. In order to test whether there is delay, I and my colleagues tested in two rooms where we can hear the voice, and found that there is obvious delay in voice calls under 3G network, but the call quality is still good, Therefore, even 3G data networks can fully meet the needs of users. By analogy, 4G networks will have better call quality due to high-speed data communication. When using the SMS function, the author found that when the power was too low, the dual account did not find any problems in receiving SMS messages, but could not send SMS messages normally. Therefore, it is recommended that the dual account product APP provide a low power alarm push function to remind users to charge in time to avoid missing important calls and SMS messages.

Summary

The dual sharing account is small in size and easy to install. It adopts the ultra low power consumption Bluetooth 4.0. It can make calls and send SMS messages through the mobile phone APP, making your iPhone become a dual card dual standby mobile phone. If you are a fruit fan and need two mobile phone numbers to use at the same time, you may want to consider the dual sharing number, a compact product, which can reduce the weight of carrying an additional mobile phone and save some mobile phone costs for users. At present, this product is being crowdfunded by JD, and you can focus on it if necessary.