If the mobile network signal is not stable or a × icon (the
icon, for example) is
displayed in the status bar, please follow the troubleshooting steps
below.
Metal and magnetic materials can
interfere with and even block the
network signal. If you are using a metal or magnetic case or a
magnetic phone holder (including a magnetic support or suction cup),
please remove them and try to connect to the mobile network again.
In some enclosed indoor environments, such as an
area with a lot of tall buildings nearby, the
phone signal may be blocked, resulting in a poor
signal reception. Go outdoors and check whether the
phone signal returns to normal.
The carrier network coverage varies depending on the area. All urban
areas are generally covered, while some remote areas may not be
well-covered, causing poor signal reception.
Perform the following to determine whether the issue is caused by
poor network coverage: check if you have unstable network signal
only in a specific area, or if users nearby using SIM cards of the
same carrier also encounter signal quality issues.
Incorrect APN settings may prevent your smartphone from accessing
the Internet.
In this case, swipe down from the status bar to
open the notification panel, and tap and hold the
Mobile data icon to access the mobile network
settings screen.
Go to Access Point Names (APNs),
touch
in the upper right
corner and select Reset to default.
Remove the SIM card from your device and make sure that its
metal surface is not stained or oxidized.
Clean the SIM card if necessary and check if the issue was resolved.
You can also use another SIM card of the same carrier to test your
phone, or insert your SIM card into another device.
If the icon is
displayed, it means that there is no network signal.
In this case, please take your device to your carrier's service
centre for assistance, and replace your SIM card with a new one.
If the network signal is still unstable, open the
Settings on your HUAWEI device, search for
Reset network settings and reset the network
settings of your SIM card. This will delete all of your Wi-Fi and
Bluetooth connections.
Once the reset is completed, connect your device to the mobile
network and check the signal strength again.
If none of the above solved the issue, back up your data and take
your device and proof-of-purchase to an authorised HUAWEI Customer
Service Centre or contact HUAWEI Customer Services for further
assistance.