Huawei
Turn Mobile Data On or Off auf Huawei
Mobile data controls whether your Huawei phone reaches the internet through the cellular network instead of Wi-Fi. When this toggle is off, apps stop syncing and web pages fail to load as soon as you step outside a Wi-Fi zone.
EMUI keeps this switch separate from Wi-Fi and airplane mode, so you can leave Wi-Fi active at home while mobile data stays off to save your monthly allowance. Open the following path to check or change the current state:
Open the settings ➔ Tap on Mobile network ➔ Tap on Mobile data ➔ Activate or deactivate Mobile data
If mobile data is already on but you still see no connection, the phone might be missing the correct APN (Access Point Name). Carriers usually push this configuration automatically after inserting the SIM card, but a manual SIM swap or a factory reset can leave the field empty.
Restarting the phone after toggling mobile data forces it to reattach to the network and often resolves short-lived connection drops. If the problem only affects one app, check that app's individual background data permission instead of the system-wide toggle.