WhatsApp也下载了，科学上网也连上了，但是还是无法使用，请注意你的科学上网是否进行全局配置了。
WhatsApp is downloaded, and the Internet is connected, but it still cannot be used. In this condition, please pay attention to whether your scientific Internet access is configured globally.
目前WhatsApp已经成为很多人最常使用的社交软件APP，不管是和家人朋友之间，或者是和同事或工作上，都可以使用WhatsApp来保持联系和沟通。根据统计，WhatsApp目前在全球已经有超过10亿的活跃用户。
Currently WhatsApp has become the most commonly used social software APP for many people. Whether you are with family and friends, or with colleagues or work, you can use WhatsApp to maintain contact and communication. According to statistics, WhatsApp currently has more than 1 billion active users worldwide.
WhatsApp最初的宗旨，是让认识的人保持联系，因此WhatsApp有一项的设定，那就是只有把对方电话号码加入你的手机通讯录后，才能使用WhatsApp发送消息给对方。不过，这项措施却在特定的时候为用户带来不便。
The original purpose of WhatsApp is to keep people in touch with each other, so WhatsApp has a setting that only after adding others’ phone number to your phone's address book can you use WhatsApp to send messages to them. However, this measure has caused inconvenience to users at specific times.
在做外贸，都会通过WhatsApp来和客户联系。买家也会通过WhatsApp来询问。不过若想WhatsApp对方，就得把陌生人的号码保存在手机通讯录里，还要等 WhatsApp侦测 detect该号码，真的超级麻烦。
When doing foreign trade, we will contact our customers through WhatsApp. Buyers will also ask through WhatsApp. However, if you want WhatsApp, you have to save the stranger's number in the phone's address book and wait for WhatsApp to detect the number. This is really troublesome.
因为如此，很多顾客基于面对这些繁琐的程序，懒得去联系这些商家，让商家们流失了好多的生意额。
Because of this, many customers are too lazy to contact these merchants based on these tedious procedures, causing merchants to lose a lot of business.
其实不一定要把对方电话号码加入通讯录才能WhatsApp联系对方。只需一招就算不在通讯录的人也能使用Whatsapp交谈！这项技巧对于网络商家可说是非常实用！那样就能让顾客直接联络你了！
In fact, it is not necessary to add their phone numbers to the address book to contact WhatsApp. You can use Whatsapp to talk even if they are not in the address book! This technique is very practical for online businesses! That way, the customer will be able to contact you directly!
步骤：
Steps:
1、使用以下衔接link
Use the following link
【https://api.whatsapp.com/send?phone=601xxxxxxxx】
那就改成：
Change into this one：
https://api.whatsapp.com/send?phone=60161234567
别人只需在手机点击这个link，就能直接使用Whatsapp联络你了。
After clicking on the link on the phone they can use Whatsapp to contact you directly.
2、取消自动下载视频、图片（不在浪费的电话Storage）
Cancel the automatic download of videos and pictures (not wasted Phone Storage)
在一般的情况下，当有人给你发来图片或视频的时候，手机都会自动替你下载并保存。可是如果你本身并没有想要下载的话，你就会发现这个功能既浪费 Data又占手机容量。想要取消此功能，你只需要依序点击『设定』>『数据用量』，就可以更改『自动下载』的设定。需注意的是，语音信息是没有办法取消下载的。
In normal circumstances, when someone sends you a picture or video, the phone will automatically download and save it for you. However, if you do not want to download it yourself, you will find that this feature is both a waste of data and mobile phone capacity. To cancel this function, you only need to click "Settings" > "Data Usage" in order to change the "Automatic Download" setting. It should be noted that there is no way to cancel the download of voice messages.