Seeing "No Service" or a missing signal bar on your Redmi Note 14 Pro can stop you from making calls or using mobile data right when you need it. This is usually a temporary glitch in the connection between your phone and your carrier's network, and there are several things you can try to get back online.
I'd start with the simplest fix first, which often works. Pull down the notification shade from the top of your screen twice to see the full quick settings panel. Look for the airplane icon and tap it to turn Airplane Mode on. Wait about ten seconds, then tap it again to turn it off. This forces your phone's modem to completely restart its search for a signal.
Restart Your Phone
A simple restart clears out any temporary software bugs that might be affecting the cellular radio. Just press and hold the power button until the power menu appears, then tap "Restart." If your screen is frozen and you can't access the menu, you can perform a force restart by holding the power button down for 15 seconds or more until you feel the phone vibrate and see the Redmi logo.
Check Your SIM Card
A loose, dirty, or faulty SIM card is a very common culprit. You'll need the SIM ejector tool that came in the phone's box. Gently push it into the small hole on the SIM tray, usually on the bottom edge of the phone, to pop the tray out.
Remove the SIM card and take a close look at the gold contacts. If you see any dust or discoloration, gently wipe them with a soft, dry cloth. Blow any dust out of the SIM tray slot as well. Carefully reinsert the SIM card, making sure it's seated firmly in the tray, and push the tray back into the phone until it clicks.
Manually Select Your Network Operator
Sometimes your phone might be trying to latch onto a weak or incompatible tower. You can manually tell it to connect to your specific carrier. Open the Settings app and go to SIM cards & mobile networks.
Tap on the SIM card you're using, then select Choose network. The phone will search for available networks. When the list appears, select your carrier's name from the list. If you're not sure, you can always tap Choose automatically afterwards to let the phone handle it again.
Verify Your Mobile Data and Roaming Settings
Make sure mobile data is actually enabled. In Settings > SIM cards & mobile networks, tap your SIM and ensure the switch for Mobile data is turned on. Right below that, you'll see an option for Data roaming.
If you're traveling or in an area on the edge of your carrier's coverage, you may need to enable data roaming to get a signal. Just be aware that this can sometimes lead to extra charges, so check with your carrier first if you're unsure.
Reset Your APN Settings
The Access Point Name (APN) is like the address your phone uses to connect to your carrier's internet. If these settings are wrong, you might get calls but no mobile data, or no service at all. In the same SIM cards & mobile networks menu, tap your SIM and then select Access Point Names.
Tap the three-dot menu in the top right and select Reset to default. This will load the standard APN settings from your SIM card. After it resets, restart your phone to let the new settings take effect.
Update Your Phone's Software
Xiaomi regularly releases updates for HyperOS that can fix connectivity bugs. Go to Settings > About phone > HyperOS version. Tap the "Check for updates" button. If an update is available, it's a good idea to connect to Wi-Fi and install it.
After the update completes and your phone restarts, check to see if your signal has returned. Software updates are a common fix for intermittent "No Service" problems that started after a recent change.
Use the Phone Information Menu
Android has a hidden testing menu that lets you directly control the radio. Open your phone's dialer app and type *#*#4636#*#*. This should open the "Testing" menu. Tap on Phone information.
Here you'll see a "Run Ping Test" button and a dropdown menu for "Set preferred network type." For the broadest compatibility, you can select NR/LTE/WCDMA/GSM. You can also try tapping the "Turn off radio" button, then the "Turn on radio" button to cycle the modem.
Reset All Network Settings
This step will erase all your saved Wi-Fi networks, Bluetooth pairings, and custom mobile network settings, but it won't touch your personal photos or apps. It's a good way to rule out a corrupted network configuration. Go to Settings > Additional settings > Backup & reset.
Tap on Reset phone, and then select Reset network settings. Confirm the reset and enter your lock screen password if prompted. Your phone will reboot, and you'll need to reconnect to Wi-Fi and Bluetooth devices afterward.
Test with a Different SIM Card
If you're still having issues, the problem might be with your SIM card or your carrier's service in your area. The easiest way to check is to borrow a SIM card from a friend or family member (on a different network, if possible) and put it in your Redmi Note 14 Pro.
If the other SIM card gets perfect service, then you know the issue is with your original SIM or your carrier account. At that point, you should contact your carrier's support. They can check for outages, reprovision your line, or send you a replacement SIM card, which often solves the problem for good.
