[Preface]

In recent years, the "dual card dual standby" has gradually developed from the earliest synonym of counterfeit phones to the current standard configuration of Android high-end smart phones, which shows how strong the demand of Chinese people for dual card dual standby is, but the iPhone is still indifferent, so there are dual card dual standby products in the market, such as apple peel, mobile phone case with mobile phone, to cater to Apple fans, Today, the author brings you another iPhone One second becomes the artifact of double card and double standby: double sharing number.

[Unpacking]

▲ It is said to be unpacking. In fact, there is only one packaging bag. I really can't complain about the outer packaging of the double sharing number, perhaps considering the cost and price , perhaps to reflect the concept of environmental protection, or to respond to the call of "strictly practicing thrift and opposing extravagance and waste". In a word, The packaging is too simple to be human. Fortunately, there is a layer of bubble bag inside the paper bag, which can play a protective role.

▲ After unpacking the package, it was found that the manufacturer considered the accessories carefully, including the product manual, NanoSIM card to MicroSIM card sleeve IPhone card taking pin, headset plug lanyard.

▲ Double sharing number has black and white style, and there will be personalized color covers to choose from in the future. The white model I got is very simple in appearance design. The shell is made of engineering plastic material, which is small and light, but the feel is not very good.

▲ The double sharing number is slightly shorter than the ordinary number five battery, and its width and weight are equivalent to a one yuan coin, so it is very convenient to carry. specific Dimensions: 46.1mm long, 25.7mm wide, 7.5mm thick, 6.8g weight.

▲ There is only one physical button with a Bluetooth logo on the front of the dual sharing number body, which is connected using the low-power Bluetooth 4.0 technology. After long press, the red and blue lights will flash , which is used to connect with the mobile phone APP. There is also a lanyard at the bottom of the body, which matches with the attached headphone jack lanyard.

▲ There is a MicroUSB interface on the other side of the bottom of the body, which can adapt to Android charging devices, so there is no standard charging line in the accessories. double The battery capacity of the account is 55mAh, and it can be used for 15 days after charging for half an hour.

▲ After removing the back cover, you can see the SIM card slot, which can be adapted to the MicroSIM card. If it is a NanoSIM card, it can also be restored with the attached card holder It is used as a MicroSIM card. At present, the product supports SIM cards of China Mobile and China Unicom, and China Telecom is about to open.

[Experience]

▲ First install the official APP of "Double Sharing Number" by scanning the QR code on the manual. It should be noted that iPhone should agree to the dual account APP Send push notification, otherwise there will be no prompt for incoming calls or messages from the SIM card of the dual account.

▲ User registration is required for the first login, and there are two ways to choose. The author selects the first verification code, and the received SMS is not It is Lvxin Network that is sent by the number life, and there is no content about Lvxin Network found on Baidu, which makes people uneasy, so the most It's better to choose the second Bluetooth pairing verification method.

▲ The design of the dialing interface is not very different from that of ordinary Android dual card mobile phones. When making a call, you will be asked to use the SIM card in the mobile phone It is also a dual SIM card. You must agree to use the microphone for the first call.

▲ Test that sending SMS to 10010 with "double sharing number" is no different from sending SMS directly with mobile phone, and a reply is received within a few seconds after sending, It can be seen that the speed of sending and receiving is the same as that of mobile phones.

▲ The incoming call is answered normally, but the incoming call ring cannot be changed, and after the sound is turned off in the APP settings, the incoming call ring will ring, which is not convenient for people who often have meetings or have babies at home, and I hope that it can be improved in the future.

[Principle]

Dual account sharing adopts the mechanism of separating SIM card authentication and communication. The hardware part is responsible for SIM card authentication and authentication, and the mobile phone APP is responsible for communication Function. The dual share account does not have the same communication module as the traditional apple skin. It uses its exclusive chip "cell" to read SIM card authentication The information is transmitted to the mobile phone APP through Bluetooth, and then the APP is transmitted to the operator's server through the mobile phone's IP channel, and the operator sends back the information through The Internet is transmitted to APP, so as to realize complete call and SMS functions. That is to say, the SIM card with dual number needs to be connected to the mobile phone network It can be used (the charge is still charged by the original SIM card operator). Thanks to this method, the dual SIM card can be used during roaming No international roaming fee.

[Special Reminder]

1. The dual account must be connected via WIFI or mobile phone traffic. The quality of calls depends on the size and stability of network bandwidth, so only With mobile 4G and China Unicom's 3G and 4G, the official traffic consumption for one hour is 10M.

2. The domestic roaming charges will appear on the SIM card in the dual account no matter whether it is dialed or answered without a roaming package The customer service consultant learned that there are only two dual sharing number base stations at present. China Mobile is located in Suzhou, Jiangsu Province, and China Unicom is located in Shandong Province.

3. The dual account is connected to the mobile phone through the Bluetooth function of the APP, so the APP must reside in the background of the system. When there is a call or SMS, the dual account The APP in the background will be activated. Once the APP process is completely closed, the dual sharing account will not work properly, and the phone or SMS may be missed.

Comparison

Let's make a parameter comparison between the dual sharing number, the apple skin with similar functions and the mobile phone case with its own phone to see what the difference is.

Summary

Double sharing account is the first smart hardware product under Digital Life. It is a Bluetooth dual card device, which effectively solves the problem of single card smart phones such as iPhone User requirements on dual cards. The product design is relatively small and light, more portable and standby than the previous third-party communication module such as apple peel More time. What is insufficient is that we must rely on the network, which may result in internet traffic charges and domestic roaming fees. The author feels that this product is more suitable for People who often go abroad or study or live abroad only need to trust the SIM card of the domestic operator through a dual account, and there is no international roaming fee Keep communication with China anytime and anywhere.