A few weeks ago, I ran into a frustrating issue on my Xiaomi Redmi Note 12 running Android 13:
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My phone suddenly showed “Mobile Network Not Available”.
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Calls couldn’t go through, SMS failed, and mobile data was unusable.
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Wi-Fi worked fine, which indicated that the problem was specific to the mobile network.
At first, I thought it was my SIM card or a network outage, but after testing another SIM and checking my area’s coverage, I realized it was likely a phone or settings issue.
I spent a few hours troubleshooting, and after applying several fixes, I was able to restore mobile network connectivity completely.
Step 1: Restart Your Phone
Sometimes, mobile network errors are caused by temporary glitches in the device.
Steps:
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Press and hold Power → Restart
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Wait for the phone to reconnect to the network
After restarting, my Redmi Note 12 reconnected to the carrier network immediately in some cases, especially after switching between 4G and 5G signals.
Step 2: Toggle Airplane Mode
Airplane Mode resets all network connections and can resolve network issues.
Steps:
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Swipe down and enable Airplane Mode
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Wait 15–20 seconds
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Disable Airplane Mode and allow the phone to reconnect
After toggling Airplane Mode, the phone often found the network faster than waiting for it to reconnect automatically.
Step 3: Reinsert SIM Card
A poorly seated or dirty SIM card can cause network errors.
Steps:
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Turn off the phone
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Remove the SIM card and check for dust or damage
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Reinsert the SIM card properly
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Turn on the phone and check network
On my device, slightly adjusting the SIM card placement restored connectivity immediately.
Step 4: Check Network Mode
Sometimes phones are set to the wrong network mode, preventing connection.
Steps on Redmi Note 12:
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Go to Settings → SIM Cards & Mobile Networks → Preferred Network Type
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Select 5G/4G/3G/2G Auto for the best compatibility
After switching to automatic network mode, my phone consistently connected to the strongest available signal.
Step 5: Reset Network Settings
Resetting network settings can fix configuration issues.
Steps:
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Go to Settings → System → Reset Options → Reset Network Settings
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Confirm the reset and reconnect to the mobile network
This fixed persistent “Network Not Available” errors on my Redmi Note 12 that weren’t resolved by previous steps.
Step 6: Check Carrier and SIM
Sometimes, the SIM card itself or carrier service may cause the issue.
Steps:
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Test the SIM in another phone to see if it connects
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Test another SIM in your phone to check if the phone is functional
In my case, my SIM worked perfectly in another phone, confirming the issue was with my Redmi Note 12 settings, not the carrier.
Step 7: Disable VPN or Proxy
VPNs can interfere with network registration, particularly if set incorrectly.
Steps:
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Go to Settings → Network & Internet → VPN / Proxy
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Disconnect any active VPN or proxy
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Reconnect to the mobile network
After disabling a rarely used VPN, my network signal returned immediately.
Step 8: Update System Software
Software bugs can prevent network registration.
Steps:
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Go to Settings → About Phone → System Update
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Download and install the latest updates
After updating Android 13 to the latest patch, the network connection became stable.
Step 9: Disable Carrier Services Conflicts
Some apps or settings may interfere with carrier services.
Steps:
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Go to Settings → Apps → See All Apps → Carrier Services
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Clear cache and storage
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Restart the phone
This step fixed intermittent network drops that previously caused my phone to show “Network Not Available” randomly.
Step 10: Check SIM Slot (Dual SIM Devices)
For dual-SIM phones, only the primary slot may support 4G/5G, while the secondary slot may only support 2G/3G.
Steps:
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Switch your SIM to the primary slot
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Reboot and check connectivity
On my Redmi Note 12, using the SIM in the primary slot resolved slow or missing network detection.
Step 11: Optional — Factory Reset
If none of the above steps work, a factory reset can fix hidden software issues.
Steps:
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Backup your data
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Go to Settings → System → Reset Options → Factory Data Reset
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Set up the phone and test network connectivity
This is a last resort but guarantees resolution for stubborn network errors.
Step 12: Test in Different Locations
Signal issues can sometimes be location-specific due to weak coverage or interference.
Steps:
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Move outdoors or to a different part of the building
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Check network connection in multiple locations
I discovered that in certain corners of my home, the network was weak, and moving closer to a window restored full connectivity.
What Changed for Me
Before fixing:
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Phone displayed “Mobile Network Not Available”
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Calls and SMS failed, and mobile data was unusable
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Rebooting alone didn’t always work
After following these steps on Xiaomi Redmi Note 12, Android 13:
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The phone connected to the network reliably
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Mobile data, calls, and SMS worked without interruption
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Switching SIM slots and resetting network settings permanently resolved the issue
Frequently Asked Questions (FAQs)
1. Why does my phone say “Mobile Network Not Available”?
Causes include misconfigured network settings, SIM card issues, wrong network mode, software bugs, or weak signal.
2. Does restarting the phone help?
Yes, it often clears temporary glitches affecting network registration.
3. Will resetting network settings delete Wi-Fi passwords?
Yes, you’ll need to reconnect to Wi-Fi networks after resetting.
4. Can VPNs interfere with mobile networks?
Yes, VPNs or proxies can prevent proper network registration.
5. Is factory reset always needed?
No. Most network errors are resolved with SIM checks, network mode adjustments, or resetting network settings.
Wrap-Up
The “Mobile Network Not Available” error is frustrating but usually solvable. On my Xiaomi Redmi Note 12, Android 13, the main causes were:
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Incorrect network mode
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Misconfigured network settings
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SIM card issues or slot misplacement
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VPN interference
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Software bugs
The steps that fixed my problem:
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Restart phone and toggle Airplane Mode
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Reinsert SIM and check slot
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Reset network settings and clear carrier services cache
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Disable VPNs and update system software
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Test in different locations
After applying these fixes, my mobile network became reliable and stable, with calls, SMS, and mobile data working perfectly.