Why Does My Vivo S18 Keep Turning Off By Itself? 6 Fixes Are Here

Android users are usually very happy with their smartphones; however, sometimes they do complain about their phones switching off abruptly. This is a weird situation to be in because one moment you are using your phone, and the next moment it suddenly turns itself off, and when you happen to turn it back on, it functions smoothly, but only for a while.

Phones shutting off problem not only disrupts your work but also tests your patience if you are in the middle of executing an important task, playing your favorite game, typing an e-mail/message, or attending a business call, etc.

We often hear Android users ask for solutions for this problem at different forums. If you are one of them and clueless about why My Vivo S18 keeps shutting off, here are ways that can help you.

So the next time you ask, “Why does My Vivo S18 keep shutting off?”, refer to this article and follow the techniques given hereunder.

Part 1: Possible reasons for phone turning off by itself

We understand your trouble when you ask, “Why does My Vivo S18 keep turning off?” thus, here we have four of the possible reasons that might be causing the glitch and help you understand the problem better.

The first one is related to updating the phone’s software or any of the Apps if the download process is interrupted and not duly completed, the phone can act abnormally causing it to switch off at frequent intervals.

Then there are certain Applications that are not supported by the Android software. While using such Apps, the phone may turn off abruptly. This usually happens when you install Apps from unknown sources which are not compatible with Android.

Also, if your battery is low or has become too old, your phone may shut off and not work as smoothly.

Lastly, you can also check if you use a protective cover for your phone. Sometimes, the cover is so tight that it presses the power button continuously turning the phone off.

Now, once you have analyzed the problem, it is easier to move on to the solutions.

Part 2: Check the battery status on Android

If your phone turns off now and then while you are using it and even refuses to start when you press the power button, we suspect that there is a problem with your phone’s battery. Well, Luckily for Android users, there is a test that can be run on the phone to check the battery’s operations and health. Not many users are aware of it, and thus, we have compiled what you need to do the next time you wonder why does My Vivo S18 keeps shutting off itself.

First, open the dialer on your Vivo S18 shown in the screenshot below.

Now dial *#*#4636#*#* just like dialing a usual phone number and wait for the “Battery Info” screen to pop up.

Note: Sometimes, the above-mentioned code may not work. In such cases, try dialing *#*#INFO#*#*. The following screen will appear now.

If the battery looks good as you can see in the screenshot above and everything else seems normal, it means that your battery is healthy and need not be replaced. You may now move on to the next step to cure your device.

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Part 3: One-click to fix Android phone keeps turning off

We understand how annoying it is to find your Vivo S18 turning off randomly on its own. So, when the age-old remedies to fix the phone keeps turning off turns futile, you need to go for a reliable tool like Dr.Fone - System Repair (Android) .

Apart from tackling the Android phone keeps turning off the issue, it can also resolve all Android problems. The issues include system update fail, device stuck on logo, unresponsive, or bricked device with a blue screen of death.

Your trouble with ‘why does My Vivo S18 keep shutting off?’ can be resolved easily using Dr.Fone - System Repair (Android). But, before that, you need to ensure that the Android device has been backed up properly to eliminate the risk of data erasing.

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Below are the steps that help easily fix Android device keeps turning off on its own:

Phase 1: Preparing your Vivo S18 and connecting it

Step 1: On your computer, install and launch Dr.Fone. Now, click the ‘System Repair’ button over Dr.Fone window and connect the Android device to your computer.

Step 2: Here, you need to press the ‘Start’ button right after hitting the ‘Android’.

Step 3: Pick your Vivo S18 details over the Vivo S18 device information interface. Click the ‘Next’ button afterward.

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Phase 2: Enter ‘Download’ mode to repair and resolve ‘why does My Vivo S18 keep turning off’

Step 1: On your Vivo S18, go to ‘Download’ mode following the instructions.

For a device with the ‘Home’ button – Turn off the mobile and then hold down the ‘Home’, ’Volume Down’, and ’Power’ buttons together nearly for 10 seconds. Leave them all and then click the ‘Volume Up’ button to get into the ‘Download’ mode.

For a device lacking ‘Home’ button – After switching off the Android mobile, hold down ‘Bixby’, ‘Power’, ‘Volume Down’ key still 10 seconds. Now, un-hold them and tap the ‘Volume Up’ button to enter the ‘Download’ mode.

Step 2: Hitting the ‘Next’ button will start the Android firmware download.

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Step 3: Now, Dr.Fone - System Repair (Android) will verify the firmware once downloaded. Within some time the Android system gets repaired.

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Part 4: Update software to the latest version to fix Android phone keeps turning off

Software glitches or outdated operating systems can trigger automatic shutdowns on Android phones. Updating your Vivo S18’s software version can be an effective solution to fix the issue of the phone repeatedly turning off. Regular software updates provided by the phone manufacturer often include bug fixes, performance improvements, and security patches. These updates can address underlying problems that may be causing the random shutdowns, ensuring a more stable and reliable phone performance.

To update the software on your Vivo S18, follow these steps:

Go to “Settings” on your Vivo S18 and navigate to the “System” or “Software Update” section (the exact wording may vary depending on your device model and Android version). Look for the option to “Check for updates” to see if any new software updates are available.

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Part 5: Cool down your phone to avoid your phone keeps turning off

When a phone overheats, it can trigger an automatic shutdown as a protective mechanism to prevent damage to the Vivo S18 device’s internal components. Overheating occurs when the phone’s internal temperature rises significantly, typically due to excessive heat generated by the processor and other hardware components during intensive tasks or prolonged usage.

To prevent the phone from turning off due to overheating, you can take various measures, such as limiting intensive usage, avoiding direct sunlight and hot environments, and using the phone on hard surfaces to aid heat dissipation.

Part 6: Narrow down the randomly turning off issue in Safe Mode

Starting your phone in Safe Mode is a good way to narrow down whether or not the problem is occurring because of some heavy and incompatible Apps as Safe Mode allows only built-in Apps to function. If you can use your phone in Safe Mode, consider deleting the unnecessary Apps which may be burdening the phone’s processor.

To boot into Safe Mode:

Long press the power button to see the following options on the screen.

Now tap on “Power Off” for about 10 seconds and click “OK” on the message that pops-up as shown below.

Once done, the phone will reboot and you will see “Safe Mode” on the main screen.

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That’s all. Well, booting to Safe Mode is easy and it also helps you to identify the real problem.

Part 7: Back up your data and perform a factory reset

Note: You must take a back-up of all your data because once you perform a factory reset on your device, all media, contents, data, and other files are wiped out, including your device settings.

Wondershare Dr.Fone is a great way to back up all your data to prevent it from getting lost after resetting the phone. It works brilliantly as it backs up all data and allows users to retrieve it fully or selectively. You can backup all files from your Android to PC in just a click and restore them later. Try this software for free before purchasing it to understand it’s working better. It does not tamper with your data and only requires you to follow the simple steps given below to backup your Android data:

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To start with, download and run the backup software on the PC.

Once you have the main screen of the software with multiple options that will appear before you, choose the “My Backup” option.

Now connect the Android phone to the PC and make sure that USB debugging is turned on. Then hit “Back Up Now” and wait for the next screen to open.

You will see the file types that will be backed up. Wait for the backup process to complete.

There you go, you have successfully backed up data.

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Now moving on to factory reset your phone:

Simply visit “Settings” on your Vivo S18 by clicking the settings icon as shown below.

And then select the “Backup and Reset” option.

Once selected, tap on “Factory data reset” and then “reset device” as shown in the picture below.

Finally, tap on “ERASE EVERYTHING” as shown below to Factory Reset your device.

Note: Once the factory reset process is complete, your device will automatically restart and you will have to set it up once again. You can restore the backup data on your Vivo S18 once you factory reset it, again using the Dr.Fone toolkit.

Now for all those of you who are wondering why does My Vivo S18 keeps turning off by itself, please understand that the reasons behind the problem are simple, and so are its fixes. All you need to do is examine the problem carefully and move on to the fixes given in this article. Dr.Fone toolkit Android Data Backup & Restore feature provides an excellent platform for you to store all your data safely on your PC and retrieve it whenever you like so that you can go ahead to solve the error yourself without stressing about data loss.“Why does My Vivo S18 keep shutting off?” might be common questions but can be dealt with ease if you follow the methods explained above.

So, do not hold back, go ahead, and try these tricks. They have helped many and will be useful for you too.

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Calls on Vivo S18 Go Straight to Voicemail? 12 Fixes

Have you ever experienced incoming calls to your phone go straight to voicemail without ringing? It can be frustrating, especially if you’re expecting an important call. It could be due to simple things like turning down the volume or forgetting to turn off the Do Not Disturb mode. In other cases, it might be because you accidentally blocked the caller’s number.

In most cases, incoming calls going to voicemail without ringing are common. However, if it’s happening frequently or for all calls, your phone may have a problem.

This article will discuss why incoming phone calls go straight to voicemail and how to fix the problem. We’ll also show you how to use Wondershare Dr.Fone, a powerful Android System Repair tool, to solve such issues. So, if you’re uncertain why that last call went straight to voicemail, keep reading, and we’ll cover everything you need to know.

Part 1: Not Ringing? Here’s Why Calls on Your Phone Go Straight to Voicemail

If an incoming call to your cell phone goes straight to voicemail without ringing, there could be a few reasons. Here’s what to look for and what you should do to fix it:

1. Turn Off Do Not Disturb (DND) Mode

DND mode is a feature that silences all incoming calls, notifications, and alerts. If DND mode is enabled, your cell phone goes straight to voicemail when someone calls. To turn off DND mode, swipe down from the top of the screen to open the notification settings panel, then tap the Do not disturb icon.

Here’s an alternative way:

• Step 1: Open the Settings app and go to Notifications.
• Step 2: Tap Do not disturb.

• Step 3: Toggle Do Not Disturb offto disable the mode.

2. Turn Off Call Forwarding

One reason calls go straight to voicemail without ringing is if you enabled call forwarding. Call forwarding is a feature that redirects incoming calls to another number. To turn off call forwarding:

• Step 1: Open the Phone Dialer app on your device, then tap the menu icon and select Settings.

• Step 2: Navigate to Supplementary services > Call forwarding.

3. Disable Call Barring

If a phone call went straight to voicemail, another possible explanation is the call barring. It is a feature that restricts calls from being made or received on your phone. If activated, it can cause incoming calls to a phone to go straight to voicemail. To turn off call barring on Vivo S18 devices:

• Step 1: Open the Phone Dialer app, then tap the menu icon in the top right corner.
• Step 2: Go to Settings > Supplementary services > Call barring, then tap OK.
• Step 3: Select Voice call, then turn off your preferred outgoing and incoming calls. When prompted, enter 0000 as a password.

4. Update Your Phone’s Software

Sometimes, software bugs can cause problems with incoming calls, which may be why your last incoming call went straight to voicemail. If your phone runs outdated software, try updating it to the latest version.

To check for updates, open the Settings app and go to Software update or System update. For a seamless update experience, follow the step-by-step instructions on your mobile screen.

5. Reset Network Settings

If the incoming calls on your phone go straight to voicemail, consider resetting your phone’s network settings. Network settings control how your phone connects to the cellular network. If these settings are not set up correctly, incoming calls may not be able to reach your device.

Note: Resetting your network settings will erase any saved Wi-Fi networks and Bluetooth pairings, requiring you to re-enter them after the reset is complete.

To reset your network settings on most Android devices:

• Step 1: Open the Settings app on your smartphone, then tap System or General Management.
• Step 2: Go to Reset > Reset Network Settings and confirm the action.

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6. Turn Off Bluetooth

When Bluetooth is on, it can interfere with your device’s ability to receive calls, causing them to go straight to voicemail without ringing. To turn off Bluetooth on an Android device, you can do one of the following:

• Swipe down from the top of the screen to open the Quick Settingspanel, then tap the Bluetooth icon to turn it off.

• Go to Settings> Connections > Bluetooth and toggle the switch off.

It should help ensure that calls come through to your phone instead of going to voicemail.

7. Check Airplane Mode

If turning off Bluetooth didn’t solve the issue, another possible cause could be that your phone is in Airplane Mode. Airplane Mode turns off all wireless connections on your phone, including cellular service, which can cause calls to dial straight to voicemail. There are two ways to turn off Airplane mode on Android:

Using the Settings app:

• Step 1: Open the Settings app.
• Step 2: Tap Network & internet.
• Step 3: Toggle off Airplane mode or Flight mode.

Using the Quick Settings panel:

• Step 1: Swipe down from the top of the phone screen to access the Quick Settings panel.
• Step 2: Look for the Airplane mode or Flight mode icon, then tap it to turn it off.

8. Check Blocked Numbers

“My boyfriend’s phone goes straight to voicemail when someone is calling. Any idea why that might be?”

Do you also find yourself asking what does it mean? It could be that he has blocked that phone number. To check this:

• Step 1: Open the Phone dialer app.
• Step 2: Tap the menu icon in the top right corner and select Settings.
• Step 3: Tap Block numbers. If you find the number in the blocked list, remove it to ensure that their calls come through to the phone.

If you still have trouble reaching your boyfriend, try calling him from a different number. If your call didn’t go through, you know that he hasn’t blocked your number and that there may be another issue with his phone.

9. Turn Off Google One VPN

If you’re using Google One VPN, try turning it off to see if that fixes the problem. Some users have reported that Google One VPN can cause incoming calls to a phone to go straight to voicemail. To turn off Google One VPN:

• Step 1: Open the Google One app on your Vivo S18.
• Step 2: At the bottom, go to the Benefits tab, then tap View Details below the Online protection with a VPN section.

• Step 3: Toggle off Enable VPN.

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10. Contact Your Carrier

If your phone calls go straight to voicemail after trying all the above, contact your carrier for help. They may be able to troubleshoot the problem or determine if there is a service outage in your area.

And if your carrier confirms that there is no service outage or billing-related block, the problem may be with your phone itself. You may need to try resetting your phone to factory settings or taking it to a repair shop.

11. The Caller Used Ringless Voicemail

Ringless voicemail is a service that allows businesses to bypass your phone’s ringtone and send you pre-recorded messages directly to voicemail. Ringless voicemail is often used for marketing purposes. If you think you’re receiving ringless voicemail calls, you can contact the company calling you and ask them to remove you from their list.

Part 2: Not Clear About the Root Cause? Troubleshoot Directly by Wondershare Dr.Fone

If you’re unsure what’s causing your calls to go straight to voicemail, you can try using the Dr.Fone System Repair tool. This software can scan and repair your phone for any underlying problems, which may fix the issue and get your calls ringing again.

Dr.Fone supports over 1000 Android models, including unlocked Vivo S18 models and models from carriers like AT&T and Vodafone. It has an intuitive interface and is easy to use, even for beginners. Learn below the steps on how to use Dr.Fone System Repair to fix incoming calls that dial straight to voicemail:

• Step 1: Download Dr.Fone on your computer, then launch it once installed.

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• Step 2: Connect your smartphone to your desktop or computer using a USB cable. Next, from the Toolbox homepage, select System Repair.

• Step 3: Select Android as the Vivo S18 device type.

• Step 4: Click Start to begin repairing your smartphone.

• Step 5: Select the Vivo S18 device details on the Name, Model, Country, and Carrier drop-down lists. Next, select the agreement checkbox, then click Next to proceed.

• Step 6: Follow the in-app instructions to enter Download mode on your Vivo S18, then click Next.

• Step 7: Wait while the app downloads the firmware; once done, click Fix Now.

• Step 8: Enter the code in the input box to verify the Vivo S18 device information in the dialogue box, then click Confirm.

• Step 9: The app will start repairing the system issue on your Vivo S18. Once completed, your app should restart, then click Done to close the app.

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Conclusion

When your phone calls go straight to voicemail without ringing, it can be a frustrating and disruptive experience. Not only do you miss important calls from work, friends, or family, but it also leaves you feeling disconnected and out of the loop. As a temporary measure to avoid missing important calls, check your voicemail regularly.

For a prompt solution, consider using Dr.Fone if incoming calls on your phone go straight to voicemail. It is a powerful mobile solution that can also address other system problems, including stuck boot loops, app crashes, black screens, and bricked devices. If you consistently experience this issue, it’s advisable to reach out to a professional for assistance.

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8 Workable Fixes to the SIM not provisioned MM#2 Error on Vivo S18

SIM cards are small chips that act as a connecting medium between your cell phone and your carrier. It is programmed to help your carrier identify your cell phone account with certain information. And eventually, you are enabled to make calls and to make use of mobile internet. Now, if your device is showing “SIM not provisioned” on Android then it signifies that the connection to carrier network cannot be established or perhaps, your carrier isn’t able to identify your cell phone account.

Part 1. Why does the error “SIM not provisioned MM#2” pop up?

There can be numerous reasons behind the pop up that reads “SIM not provisioned” on Android. But basically, it most probably affects the users who have registered a new SIM card. If you get to experience this issue in other situations or if the SIM is not working in Android, then the problem is with the SIM card and needs to be replaced. Anyways, here is a list of situations when the “SIM not provisioned” error may bother you.

• You got a new SIM card for your new phone.
• You are transferring your contacts into the new SIM card.
• In case, the carrier network provider’s authorization server is unavailable.
• Perhaps, you’re out of the reach of the carrier coverage area and that too, without active roaming agreement.
• Though new SIM cards work flawlessly. But it is often necessary to get your SIM card activated due to security reasons.

Just in case, you haven’t bought any new SIM card and the one you were using was working fine until now, then the most probable reasons behind it could be listed below:

• If your SIM card is too old, possibly it might have gone dead, try replacing it.
• Perhaps, the SIM card was not properly inserted into the slot or there might be some dirt between the SIM and smartphone pins.

A yet another reason could be that your SIM card got deactivated by your carrier provider as it could have been locked to a particular phone. Now, if you insert such a SIM card to another device or a new device even, you may get to witness a message that reads “SIM not valid”.

2.1 One click to fix the “SIM not provisioned MM#2” error on Android

Without talking any further, let’s straightly get to the first and the easiest way to repair SIM not provisioned issue on Android. For this purpose, we’re glad to introduce Dr.Fone - System Repair (Android) , one of its kind of tool that is capable of repairing almost all sort of Android OS issues in just a matter of few clicks. Whether it is SIM not provisioned on Android or SIM not working in Android or your device stuck in a boot loop or black/white screen of death. The most probable reason for these errors is Android OS corruption. And with Dr.Fone – Repair (Android) you can efficiently and effectively repair your Android OS in a hassle freeway.

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Step by step Tutorial to fix “SIM not provisioned MM#2” error

Step 1. Connect your Vivo S18

Download and launch the Dr.Fone toolkit on your computer and then opt for the “System Repair” option from the main interface. Meanwhile, get your Vivo S18 connected with the computer using a genuine cable.

Step 2. Opt for Android Repair and key in important information

Now, hit on the “Android Repair” from the 3 options on the left, followed by hitting the “Start” button. From the upcoming screen, you’ll be asked to key in important device-related information, like brand, model, country, and carrier details. Hit “Next” afterward.

Step 3. Boot your device in Download mode

You must put your device in Download mode for better repairing of your Android OS. Simply follow the onscreen guide to boot your Android in DFU mode and hit “Next” thereafter. Once done, the software will automatically start downloading the most compatible and recent firmware for your device.

Step 4. Initiate Repairing

As soon as the download completes, the software verifies the firmware and automatically initiates repairing your Vivo S18. Within a short period, you’ll notice that your Vivo S18 has been successfully repaired.

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2.2 Ensure the SIM card is not dirty or wet

At times, the issue can be as simple as cleaning your SIM card and SIM slot properly. Ensuring that SIM is not wet either and then putting it back into its place. If this works, then the SIM not working in Android was due to the dirt or moisture that was preventing proper contact between SIM card pins and smartphone circuit.

2.3 Insert the SIM card correctly

If your SIM card was working properly until yet, there is a good possibility that the SIM card may have moved a bit from its actual location. Eventually, there is poor contact between the SIM card pins and the circuit. Try inserting your SIM card properly with the following steps.

• Power off your Vivo S18 and with the help of Q pin, eject the SIM card holder from the SIM slot of your device.
• Now, grab a soft rubber pencil eraser and gently rub it in on the gold pins of SIM card to clean them properly. Then, with the help of a soft cloth wipe away the rubber residue from the SIM card.
• Next, push the SIM back into the SIM card holder properly and push it back into the SIM slot now.
• Turn your device back on and look if your SIM not provisioned on the Android issue is resolved or not.

2.4 Activate the SIM card

Usually, when you buy a new SIM card, it gets automatically activated within 24 hours of being plugged into a new device. But if that’s not happening in your case and you’re wondering how to activate SIM card, make use of the three options below to enable activation:

• Call your carrier service provider
• Send an SMS
• Log on to your carrier’s website and look for the activation page over it.

Note: The aforementioned options are straightforward and are quick ways to enable activation. It depends on your carrier network whether they support them.

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2.5 Contact your carrier

Even if your SIM isn’t activated, grab another working device to make a phone call to your carrier or network. Ensure, to explain the entire situation and the error message to them. Be patient while they investigate the issue. It may eat up a heck load of time or may get resolved in a few minutes that completely depend upon the complexity of the issue.

2.6 Try the other SIM card slot

A yet another reason why SIM not working in Android can be because of the SIM card slot might have gone corrupted. Thanks to the dual SIM technology, you do not have to rush immediately to get it to check or repair. You can simply rule out this possibility by ejecting the SIM card from its original SIM slot and then replacing it into the other SIM card slot. If this solution did work out for you then it is obvious that the problem was with the SIM card slot that got corrupted. And hence, it was triggering SIM not responding issue.

2.7 Try the SIM card in other phones

Or just in case, you’ve still no joy and the SIM not provisioned on Android message is bothering you. Try making use of another Android device. Eject the SIM card from the Vivo S18 device which is creating problems and try plugging it into other Vivo S18] and other smartphones. Perhaps, this will let you know whether the issue is with your device only or with the SIM card itself.

2.8 Try a new SIM card

Still, wondering how to fix SIM not provisioned? Perhaps, nothing worked for you, right? Well, on that note, you must head to your carrier store and request a new SIM card. Also, inform them about the “SIM not provisioned MM2” error, they will be able to execute proper diagnostics over your old SIM card and hopefully get it resolved. Or else, they’ll equip you with a brand new SIM card and swap the new SIM card into your device and get it activated in the meantime. Eventually, restoring the normal functioning of your device.

Conclusion

In wrapping up, SIM not provisioned errors on Android can be troubling, but they’re certainly fixable. There are several methods, from a simple device restart to reaching out to your network provider. But if these don’t work, we suggest trying Dr.Fone - System Repair (Android) . This tool is known for its ability to handle an array of Android issues and could be just what your device needs. Navigate your tech challenges with ease using Dr.Fone.

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