preface:

With the accelerated pace of life and work, more and more things need to be communicated. Many people have multiple mobile phone cards. How to use these cards has brought us many problems. Generally, a standby mobile phone is added, but it is inconvenient to carry multiple mobile phones with you. How to solve this problem? Gangzi recently applied for a product in Lei Feng's trial - Double Sharing Account. Can it solve this problem perfectly? Let's have a look.

Unpacking:

After receiving the product, I was very surprised. Although I knew that the double sharing number was only 6.3 grams, I was still shocked by the soft bag of the phone. I could not help but pinch it several times to confirm that something was inside.

Open the package, there is no inner package inside, including the dual ID host and instructions, card taking pin, NANO to MicroSIM card holder, dust plug lanyard and other accessories.

What Gangzi got was a black host, round chamfer and light figure. It was very comfortable to get the phone. There was no word on the shell, even the logo. It was strange. I don't know whether the official product is like this. Put down the mainframe and take a picture with the smallest dime. Compared with the small size, it is really small and exquisite.

There is a button engraved with the Bluetooth logo on the front, with a concave design, which will not be touched by mistake when placed in the pocket. But the indicator light is also made on the button, and the button must be poked with a nail cover, otherwise the state of the light cannot be seen.

The top of the side is the most popular MicroUSB charging interface. It is very convenient to charge with your mobile phone charger or mobile power supply.

The bottom is the interface for installing the lanyard. After installing the lanyard, you can attach the earphone plug to the phone and carry it with you.

A careful observation of the side shows that there is a small notch from which the back cover can be opened.

Pry open the rear cover with your fingernail to see the MicroSim slot. Push the metal clip forward slightly, lift it up MicroSim is put into the slot, if your card is NANO card can only be used by transferring the card holder attached to the card to MicroSIM. Put in the good clip of the card back cover, and pull it down in place until it clicks. The SIM card can use China Unicom and mobile cards, but does not support telecom cards.

Cover the rear housing. It takes 30 minutes to charge for the first use. After finishing, go to the double sharing account, and press and hold the button to the red and blue flashing state.

The mobile phone can scan the QR code in the manual to download the APP. The mobile phone needs to support Bluetooth 4.0, Android version 4.3 or above, Apple users need 4S or above, and iOS7 or above to use the dual account APP. Open after installation, and enter the phone number according to the prompt. For the number registered here, you need to fill in the card number installed in the double share number. When Bluetooth is not turned on, there will be a prompt. Follow the prompt step by step to connect the phone successfully.

It is worth noting that at this time, you need to look at the notification bar of the mobile phone. There will be a message push request. You need to select Allow here, otherwise the normal use of the dual account will be affected.

Two users who have registered a dual account can send messages and pictures through the network, and those who have not registered a dual account can use SMS.

To make a call, you need to operate in the APP of the dual account. There are mute and playback options, but I don't see the recording function.

The APP has a positioning function. After testing, it reports an error and cannot be used normally.

Summary:

After using the dual account for a week, the phone and SMS are used at normal frequency, but the battery power is still not used up. It seems that the official long standby is really credible. According to the data, the "dual sharing account" has a built-in "cell" chip that reads the SIM card authentication information and transmits it to the mobile phone APP through the Bluetooth signal. The APP then realizes the complete call and SMS functions through the mobile phone network. It has no ability to communicate with mobile and communication operators. This is the principle of its small size and long standby time.

This principle also causes its fatal weakness. The paired mobile phone must have a network to realize calls and SMS, which is very different from the usual dual card dual standby. Imagine that in the wilderness or on the train, the mobile phone network is unstable and WIFI hotspots cannot be found. How to use the dual account? In addition, the Bluetooth connection is not stable. If the Bluetooth is disconnected, it can not be used.

In addition, the SIM card of the dual account always roams the base station in Shandong (Unicom card) or Jiangsu (mobile card), and then contacts the APP through the network to make calls. As long as the mobile phone has network, both Wifi and mobile signals can be used. Of course, the network quality is better. For people who are not in these two regions, they have been roaming all the time, and non national packages will also incur high costs. In the case of mobile signal, the call process will consume the traffic of the card installed in the phone and the call time of the dual number card.

Personally, the dual account is not convenient to use because of its super long standby. If you want to start, you need to seriously consider which one you need more, super long standby or convenient use.