How Do I Check If I Use 3G or 4G Internet?

Find out from your carrier what type of signal is available in your area; or use an online coverage checker for your network.
You can set the phone's network preference in Settings, Wireless & Networks, Mobile Networks. The phone will automatically connect to the strongest signal however, so there is normally no need to adjust those settings from their default, but if you live in an area of weak 4G signal, it may be wise to set the phone to 3G-only to prevent it trying to connect and thus wasting battery.
The type of signal to which the phone is connected is displayed in the status bar.

Posted via the Android Central App
 
Check this picture i cant post links so i removed http , and can you tell me what internet i have from that pic? Also i am connected to mobile data on that picture but i dont see any indication on status bar whether or not i do use 4G or 3g?
 
It shows h+, so it depends on your carrier. Some consider h+ to be 4g,others consider it to be 3g
 

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