How to create and manage iMessage iPhone chat groups
The iPhone iMessage group chat feature helps us text and chat more easily with many people, instead of sending individual messages.
Many people were "startled" when paying 3G / 4G bills. Just because subjective, did not pay attention to accidentally surfing the web, listening to music, watching movies with mobile data without even knowing it.
In order not to fall into such a situation, there are many ways such as: Turn off location, turn off application updates, prevent downloading photos to Mail or disable video autoplay on Facebook ...
Particularly on iOS 13 also provides a low data mode (Low Data Mode), to turn off all background communication, and require applications to suspend all synchronization tasks until Connect to the unlimited network capacity.
Access Settings (Settings) , click Mobile (Cellular). Here, click next to Cellular Data Options, then slide the slider in the Low Data Mode to the right to enable this feature.



Low data mode also works on Wifi networks, but not all Wifi networks support this feature. To check if your Wifi network supports it, just open Settings (Settings) , select Wi-Fi.
Find the Wifi network you want to turn on Low Data Mode, then click the i button next to the Wifi network.
Next, slide the slider in the Low Data Mode to the right to enable this feature.
For iPhones using iOS 12 and below, you can refer to the following 10 3G / 4G data saving tips:
By default, the App Store allows you to update apps automatically, preventing users from having to manually update them. But that is the reason why your 3G data is consumed, because it has the option to allow mobile network data to automatically download application updates. So you have to disable that option going by:
Go to Settings, then click on iTunes & App Store . Then drag the slider beside Use Cellular Data to the left to turn it off. Or turn off the Updates section in Automatic Downloads.



IOS 9 and above adds the Wi-Fi Assist feature, which automatically switches to mobile data when the Wi-Fi network is poor. Of course, there will not be any notice, so you do not notice that you are still indifferent to watching movies, downloading applications, playing games, watching YouTube , this is the "culprit" that makes you "distorted" when the bar. Pay 3G bill.
To turn off this mode, go to Settings -> Cellular. Then, scroll down, turn off the Wi-Fi Assist button .


The automatic downloading of images in the Mail app is also one of the reasons for your 3G data consumption. So turn it off by: Go to Settings> Mail, Contacts, Calendars. Then scroll down and turn off the Load Remote Images section .


Currently there are many applications that ask for permission to use location, such as Google Maps , Uber , GrabTaxi or Swarm . In principle, the phone will take advantage of the 3G network to locate the location more accurately, they will consume quite a lot of your 3G capacity for this positioning. Disable them by: Accessing Settings -> Privacy -> Location Services.



Drag the slider beside Location Services to the left to turn off positioning. If you still want to allow some applications to use the location feature then click on each application, tick Never. In addition to saving 3G data, this also helps to save battery for your device.



Background App Refresh feature helps some applications automatically update information and refresh information when running in the background. The email, weather, stock, chat apps, social networks, calendar regularly update information, so it will definitely consume your 3G capacity. So it's best to turn this off by:
Go to Settings -> General -> Background App Refresh. Then slide the Background App Refresh slider to the left to turn it off. If you want to allow some applications, just drag the slider beside that application.



Some applications such as WhatsApp , PowerPoint , Word , Excel or Safari often store and convert data to iCloud Drive. But the problem is that they will probably take advantage of 3G itself to start the process of backing up data to the cloud, so it's best to turn this off by:
Go to Settings -> iCloud -> iCloud Drive . Then scroll down to find and turn off Use Cellular Data.



Recently, Facebook supports the auto-play video feature, this feature is quite convenient to help you do not need to click and watch it. However, if you use 3G to surf Facebook, they are the culprit consumes quite a lot of your 3G capacity. So turn off the auto-play video feature by:
Open the Facebook app , click More in the bottom right corner of the screen. Then, scroll down to find and click Settings -> Account Settings.



Continue to click on Videos and Photos -> Autoplay -> Select Never Autoplay Videos.



The time synchronization feature helps you display the most accurate time, but it also consumes a bit of your 3G capacity. Therefore, you can turn on the sync feature only once to synchronize the time properly, then turn off the auto-sync feature. Go to Settings> General> Date & Time. Then, drag the slider at Set Automatically line to the left to turn it off.



Currently, some browsers such as Google Chrome or Opera have support for data saving feature. When you enable this feature, the website you visit will be sent to Google or Opera servers first, then compressed and then transferred to your phone, saving 3G data.
Open Google Chrome browser, click the 3 vertical dots icon in the top right corner of the screen, select Settings. Then, click on Bandwidth , and then enable Data Saver.



Apple allows users to stream high quality music regardless of whether it is via WiFi or a mobile network. However, they consume a lot of your 3G capacity, so if not necessary, turn this feature off by:
Access v rushing Settings> Music. Then slide the slider in the High Quality on Cellular line to the left to turn it off. If you don't need to stream music over 3G, you can always turn off the Use Cellular Data option .



Hopefully, with the above tips will help you significantly save 3G capacity, not "half-crying" when paying 3G bills.
I wish you successful implementation!
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