Why Is My Phone Displaying The 3G Icon When I Am Using A 4G Sim Card - Huawei P8 Faq

11.47 Why is my phone displaying the 3G icon when I am
using a 4G SIM card?
Check that you are using a 4G SIM card. If not, change your SIM card.
If the 4G signal is weak or there is no 4G coverage, your phone will automatically switch to a
3G network.
11.48 Can my 4G phone use the 3G card?
Yes, your phone can use the 3G card provided by the same carrier.
11.49 What is 4G?
4G is short for the 4th Generation Mobile Communication, which supports faster data
transmission than the 3G network.
11.50 Why does the 4G phone consume more traffic than
the 3G phone?
This understanding is incorrect.
The 4G network uses 42 MHz frequency and the 3G network uses 21 MHz frequency. The
download speed of the 4G network is faster than that of the 3G network. However, fast speed
doesn't mean a large traffic consumption. Traffic consumption depends on the user data usage
instead of networks and phones.
The data transmission speed of the 4G network is faster. Misoperations may consume a large
amount of traffic. Therefore, you are suggested to disable the mobile data services when you
are not using the mobile network.
11.51 How can I use the 4G service?



11.52 Why is the usage calibration message of Phone
Manager incorrect or is the calibration failed?
This function is subject to the carriers. In certain areas, the automatic usage calibration
function is not valid. You need to manually send a message to the carrier to query the usage.
You need to register as a subscriber of a carrier that provides 4G networks.
You need to obtain a 4G SIM card.
You need to have a phone supporting the 4G network.