# The original innovator # once selected flow card process

This year, there are not many companies in the office that do not provide wireless networks. Unfortunately, we are one of them. Fortunately, there are at least various types of portable wifi and hard-pressed partners. Some time ago, the company said that it wanted to upgrade the management system. It was thought that it was just installing a Green Dam. It did not expect that the technology would lock the usb authority of each machine, and the company inside and out was mourning.

No wifi, how to grow crops? Although the carrier's traffic is much cheaper than in previous years, one hundred 3G traffic is still quite uneconomical. If you don't have a traffic card, I think so, and then I decided to understand the traffic packages of several major operators.


Choice is always the most difficult step


China Unicom recently pushed their new product, the ice cream package, to 200 yuan per month. The publicity said that the call is free and the traffic is unlimited, but the official website has a 100G limit. According to personal experience, as long as you don't often download cute little movies, 100G is still quite impressive. It can be said that mobile phone use is not a big problem. However, 200 yuan per month is actually a small sum of money. In addition to the pre-payment of preferential prices, it is 2,400 in a year.

China Unicom's monthly and annual cards are actually more cost-effective. The 50-Gbyte 3.5G flow monthly card is almost a half-rate flow packet, saving more than enough points, but the national traffic flow is only 500M, making people cry. If I am not a heavy user, it is estimated that this package will be selected.

Mobile did not save, mobile official website to flow card package is 2G 50 yuan nationwide traffic, beyond the next 60 yuan / 1G, it is better to handle traffic packets directly.

Telecom's traffic card is also flying, 22 + 2G half-year card price of 300, Unicom also sells the same price to 1G more national traffic, there are enigmatic 33G + 3G half-year card, as long as two hundred, telecommunications goodbye.

Originally prepared to order a Unicom network card, I suddenly remembered that Ma Yunjia has recently pushed the ANT treasure card, point it in and take a look, 2G+100 minutes call, monthly fee 36, beyond the package flow 10 yuan/G domestic traffic, If you use a traffic card, you can get about 50 or 60 yuan per month. It is similar to China Unicom's 3.5G/50 yuan for one month.

At this time, the Tencent King Card appeared before the horizon.

Monthly rent of 19 yuan, local traffic is 1 yuan 500m every day, the province's flow is 2 yuan 500m, automatic renewal, do not have money. If plugged into a mobile phone, you can also enjoy Tencent-based applications without traffic. For example, if I do a traffic card like this, I have a maximum of two dollars a day. Even if I use it on weekends, it is only 30*2+19=79, which is basically equal to 15G~30G traffic. Cool! Decisively orders.


Hardship, the road to application and activation


Dawang Card does not currently have a link to buy. I found their public number in Wechat. There is an application link in the reading of the most recent article. @Ma Huateng, let's stay for dessert. At that time, I saw a few knockoffs.

The account owner is China Unicom's genuine product.

To apply for a king card, you need to provide a contact number and address for the ID card. The Wang card will be sent by the postal courier. It should be noted that this step does not require money. The collection of the shipping fee and the card-collecting fee are all rogue.

Application for King Card requires personal information

I was applying for a card in late February. It was delivered for two days and it was only one step away from March. At this time, activation was very stupid. And if you activate the card, you will be charged 20 yuan for the first month, which is a pity. Wangka can be activated within 20 days from the date of delivery. If it exceeds 20 days, it will be voided. Please pay attention to your delivery time.

Express delivery must be activated within twenty days

Unicom X Post X Tencent Three people serve me one

Because the iPhone SE does not have dual card settings, it has specifically bought a ready-to-use wifi, which is a big expense. However, this wifi is indeed very strong, you can also send and receive text messages, so that if Wangka is a call transfer, you can be happy to take-away, you can also grab a handful of major new website user discount wool, and earn a million .

This mobile wifi traffic monitoring is not very accurate

Disguise ChinaNet

Can actually send text messages

Early in the morning on March 1, a good day to activate Wangka. The opening of Wangka is also through the WeChat public account. When the card is opened, the mobile phone number reserved for ordering is required. There are also eight ICCIDs behind the card, ID card, and video authentication. The verification speed is still relatively fast.

Audit process

Accidents also came on the scene. Didn't activate Wangka actually have any signal? ? ? Scared that I pulled Wangka out of the cell phone, or did I have a signal? ? ? Is it arrears? I went along with Wang Ka’s assistant to prepare to charge for the telephone charges but found an astonishing fact that China Unicom performed system maintenance from 0:00 to 6:59 on March 1.

Okay, okay, Unicom counts you. Another astonishing fact that made me insignificant. The event to charge 100 to 100 in the previous two days was also over, leaving only 50 or more and 50 calls. Actually, the organ was too clever to counter the fate of Qing Qing.

Wait until the morning, Wang card finally activated, sent 20 yuan bills and 1G national traffic, as long as the Unicom signal, Wangca's performance is very good, hard work, but also to grow crops during work hours.

Mobile wifi and Wang card

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A slip ring is an electromechanical device that allows electrical current to flow through a rotating assembly. It is often used in conjunction with a commutator to create an electrical connection in a rotating system. The device consists of a number of contact rings mounted on the rotating assembly and two or more stationary contacts. When the rotating assembly is rotated, the contact rings pass by the stationary contacts, creating an electrical connection.


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A slip ring is an electromechanical device that allows the transmission of power and electrical signals through a rotating assembly. Slip rings are commonly used in applications where it is not possible or practical to make a permanent electrical connection, such as on a rotating antenna, wind turbine, or radar dish. There are many different types of slip rings available, each with its own set of benefits and drawbacks. Some of the more common types of slip rings include fiber optic slip rings, rotary unions, and contactless slip rings.


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Conclusion: When to use a custom slip ring


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