Turn Google Location History On or Off
If Google Maps keeps suggesting places based on where you have been, or your Timeline fills up with stops you never meant to save, Location History is still active in the background. On Xiaomi phones this tracking can run even when no Google app is currently open, which surprises a lot of users checking their data usage or battery drain.
Share Wi-Fi Password via QR Code
Typing out a long Wi-Fi password for every visitor gets tedious, especially with random letter-number combos. Xiaomi phones can turn your current network credentials into a scannable QR code instead. Anyone with a camera can then join the network without you dictating a single character.
Delete an APN Entry
A wrong or duplicate access point can block mobile data or MMS on your Xiaomi phone, even after you switch carriers or SIM cards. If an old APN profile stays behind, the device sometimes keeps trying to use it instead of the correct one. Removing the unused entry clears up the confusion without touching your other network settings.
Limit Connected Hotspot Devices
By default, your Xiaomi phone lets an unlimited number of devices join your mobile hotspot at once. That can slow down your connection and makes it hard to track who is actually using your data. Setting a maximum device count gives you back control over who connects.
Connect to a Wi-Fi Network
If your Xiaomi phone shows no internet access or keeps prompting for a network password, the device usually just is not linked to any Wi-Fi yet. Mobile data alone will not give you access to a home or office network, and an inactive Wi-Fi radio hides every nearby network from the list. Once Wi-Fi is switched on, both private networks with a password and open public hotspots become selectable.
Unpair a Bluetooth Device
If a Bluetooth device keeps reconnecting even though you stopped using it, or a headset refuses to pair again after a failed connection, the old saved link is usually the cause. Turning Bluetooth off does not remove that link, only the paired list in the Bluetooth settings does. Once removed, the device drops out of the paired list and needs a fresh pairing before it can connect to your Xiaomi phone again.
Turn Wi-Fi Auto Reconnect On or Off
If your Xiaomi phone keeps rejoining a Wi-Fi network you would rather avoid, or the connection drops every time you walk back into range, the Connect automatically option tied to that specific network is behind it. MIUI turns this behavior on by default for every network you have ever joined, and it stays active until you switch it off for that network individually. That is also why disabling it on one network never changes the behavior of the others.
Turn Portable Wi-Fi Hotspot On or Off
If other devices cannot get online through your Xiaomi phone, the portable hotspot might simply be switched off or still using a network name and password you do not remember. This feature turns your mobile data connection into a Wi-Fi network for laptops, tablets or other phones nearby. Once it is active, the tricky part is usually finding the right toggle again, since it sits inside a settings screen most people only visit once.
Turn Data Usage On or Off for a SIM Card
If mobile data suddenly refuses to turn back on after your phone hit its limit, the culprit is usually the Data usage toggle inside the Security app. Xiaomi switches off the connection automatically once the set threshold is reached, and it stays off until you flip that switch again. The same setting also lets you disable mobile data manually before any limit is close.
Set a Default Calling SIM for a Contact
On a dual-SIM Xiaomi phone, calling a specific person always triggers the SIM prompt, even though you always pick the same card for that number. This happens because the contact has no fixed calling SIM assigned, so MIUI asks every time before dialing out.
Connect Manually to a Hidden Wi-Fi Network
If your Xiaomi phone does not list a wireless network under available connections, the router is likely broadcasting with a hidden SSID or sitting outside the usual scan range. In that case MIUI needs the exact network name and password entered by hand instead of picking the network from a list. Typing the SSID wrong or missing the correct security type is the most common reason the manual entry still fails.
Turn Mobile Data On or Off
When your Xiaomi phone shows no internet outside Wi-Fi, mobile data is usually switched off or was toggled off by accident after a network change. This also blocks messaging apps and background sync, since they rely on the cellular connection once Wi-Fi drops. A wrong or missing APN can cause the same symptom even when mobile data itself is enabled.
Set Default SIM for Mobile Data
If your Xiaomi phone keeps using the wrong SIM for mobile data, downloads and browsing can suddenly stop working on the plan you actually pay for. With two active SIM cards, MIUI needs one clear default data connection, otherwise apps may quietly try to load data through the wrong carrier. Picking a fixed data SIM stops that back and forth.