Figure out if a smartphone has a virus
If your smartphone has started suddenly to falter and behaves in a strange way, there are two possibilities:
Today we will discuss the first case, that is the more frequent. In fact, if the smartphone in question starts to crash very often, is in need of constant restarts, and you will not more than get to the end of the day because of the speed with which you discharged the battery, the problem might be a malware. For Android smartphones is very likely to run into a virus, while the Apple smartphone is more difficult, especially if you have never carried out any jailbreak.
In this guide you will find advice to figure out if a smartphone has a virus and also some tips on how to protect Android from viruses and malware to prevent further attacks. Because smartphones with on-board iOS are infected rarely, here you can understand how to remove a virus on iPhone.
The effects caused by the viruses are very often immediate. The first thing to do, if in your device you are experiencing the symptoms described above, is to assess what may have caused the infection. One of the main causes is the installation of infected applications, and for this you'll need to check if your smartphone there are applications that were not installed personally.
In the Android device, just open the Settings and select the Applications entry. Then you have to tap on Show all apps, so you can see the entire list of applications installed on the smartphone. If there is a suspicious application to delete it just click on stop and then click Uninstall. Also, to get more information about an unknown app, do a search on Google might help.
Speaking of installed applications, then, it is good to verify that the service Play Protect is active. Google Play Protect is a function of Android store which monitors the applications installed on the device. To check that it is active, simply open the Google Play Store and then tap on the symbol menu ☰, scroll down to find the entry Play the Protect, and tap on it. Here, the voice Search, security threats must be already active and you can also activate Improves detection of malicious apps for added security.
It is important to never downloading applications from untrusted sources, that is different from the Play Store. In this regard, by going into the Settings and doing tap on the App and notifications > Advanced > special Access to the apps > Install app from unknown, you can view a list of applications. Under each of these must be the words Not allowed, and if not disabled, the entry Allow from this source, doing tap on the application.
In smartphones with the iOS operating system, there should not be any risk to install apps from untrusted sources different from the App Store. To check the applications installed on the device you have to go into Settings > General and finally to free Space iPhone. From here you will be able to view all the apps present in the device, and, in the case in which there are one or more suspicious, uninstall them by doing the tap before on them and then click Delete app.
There are numerous applications that use the permissions of the administrator, but this can pose risks. In fact, it happens that malicious app require these permissions, and can thus act without interference within the smartphone.
On Android devices, you can view the applications that have these permissions through the Administrator device. From the Settings, you must access the Security section and position, and the sliding tap on the Apps entry to administration device. In so doing will be viewable on the list of all apps using permissions of directors and, if there are suspected, proceed to remove the permissions and then to uninstall them.
In the iPhone there is the risk that some applications have this kind of permissions. However, as is often the case that the virus will take advantage of the application to intercept sensitive information (such as biographical data, information on the current account or credit card data) that are transmitted from the smartphone on the internet.
To avoid this, the iPhone you have to enter in the Settings and tap on General, scroll down and tap VPN. Here you can delete the suspicious data, or reset the network settings from the voice always present in Settings > General > Reset network settings.
Finally, let's talk about the devices, Android and iOS, with root or jailbreak. The device in question is more likely to be infected, and for this reason, this practice is strongly discouraged. To understand all the risks please see the guide on how to do the jailbreak on iOS, or the information contained in the guide on how to obtain root permissions.
There are many types of viruses, all with different characteristics and effects. The spyware, for example, by infecting the smartphone and access the internet, it will begin to transmit all of the personal data that you will find. For this reason, the consumption of data traffic will be abnormal.
The data traffic is visible on Android devices, inside of Settings, and in the voice Network and the Internet. Patching on data Usage and then on mobile data Usage, you can check the power consumption of the data traffic under mobile network, but also those under the Wi-Fi network by tap on data Usage Wi-Fi. If in the list of apps that had access to the internet, you will notice a suspect, you can uninstall it by tapping any before it, and then again on his name.
To view the list of installed applications on the iPhone that have access to the internet, you have to enter in the Settings and then tap about Phone. Here, by scrolling down you can view the list and the number of bytes used by each individual application. To block internet access of an application you only have to move the stick this next to the name of the app, making it go from green to gray.
Another effect caused by some virus is the excessive speed of consumption of the battery. In fact, some of the virus always remain active in the background taking advantage of the continuation of the processor and thus causing the rapid reduction of the charge.
Therefore, the first thing to do is check the power consumption of the device. On Android devices, simply go in the item Battery from the Settings to display the graph of the consumption. The latter shows the discharge of the battery from the time when the smartphone is disconnected from the power supply. To view the power consumption of individual applications, simply scroll down to find the list of applications, its very useful to find any apps or services that are infected.
There is, however, to specify that the excessive consumption of the battery are not always caused by a virus. In fact, the speed of download of your smartphone depends on your use, since it is easy that will download more quickly by using a lot of apps, social networking, video games, but even if you make many calls, or you keep the data and GPS always on.
On the iPhone devices is equally simple, the way in which it is possible to verify the consumption of the battery. Once you have entered in the Settings, on iOS you will find the item Battery in which you have to log in. From here, scroll down to the entry in battery Use to see the full list of apps that are draining the battery of your iPhone. You can organize the list according to the consumption of the last 24 hours or last 7 days, and in addition plugging on the list you will see the number of minutes of activity of each app and see which are In use and which are In the background.
A category of viruses that affects of frequent users is that of the Dialer. These malware connect directly to your SIM card and activate the services using your number so you can consume most, if not all, of the remaining credit. The Dialer will activate, often opening malicious links from the browser on your smartphone and to resolve you will need to contact your telephone operator. Your operator you will need to ask to be reimbursed for all the costs caused by the services activated without request and, if possible, require that your SIM is put a block for any paid service. By doing so, you should not theoretically more to run into this hardship.
To get in touch with the telephone operator of your SIM, you can refer to guide on how to talk with the operators of telephony, whereas to check the remaining credit on your SIM card, refer to the article which helps you to check remaining credit on the TIM, Wind, 3, Vodafone.
We hope that this guide has helped you in the resolution of your problem. Also, you should consider of antivirus applications for your smartphone, and, in particular, you can find the best antivirus for android at this link.
In the event that your Android smartphone is found to be infected, you can read the guide on how to remove virus and for more clarification, we'll leave you here below are some other articles about this topic. Please do not hesitate to ask via the comment box.