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Basic protective measures for smartphones

For many people, their smartphone is their constant companion in everyday life. Do you also belong to those who take their smartphone everywhere and can’t do without it for a day? If so, you probably also have very private or sensitive data on your smartphone, such as photos, confidential text messages or business information. In order to protect your smartphone and the potentially very private data it stores, you should take appropriate measures in the event of loss or theft.

This includes, for example, protecting the smartphone against unauthorized access via PIN (Personal Identification Number) and screen lock.


Make sure that you do not use common number combinations such as “1234”, “1111” or similar. These are very easy to hack by unauthorized persons.

If your smartphone is stolen or lost, you should have the SIM card (subscriber identity module) of the device blocked by your network provider so that no one can use it to make phone calls or incur high costs.

Do you know the serial number of your smartphone? This is located under the battery, on the original packaging, or on the mobile phone purchase invoice. You should make a note of this number so that you can report it to the police in the event of theft.

All common operating systems also offer various services that can be very helpful in the event of theft or loss.


Can’t you find your cell phone? With the Android Device Manager you can let your smartphone ring at maximum volume, even if it was muted. This way you can quickly locate a lost phone at home. If it’s somewhere else, you can locate it in real time and leave a message for the finder.

If your iPhone has been lost or stolen, you can usually search for it via iCloud, on condition that the device is switched on and has data reception.

You probably already heard about the possibility of installing a kind of anti-theft application on your smartphone. For example, it allows you to locate and lock the lost or stolen smartphone and delete the data stored on it. The commands required for this can be issued by another smartphone whose number has been stored or sent to the device via an online portal.


In the event of theft or loss, you should block the SIM card immediately if you do not have an anti-theft app installed on your phone. However, if an app is installed, the SIM card should not be blocked until the data has been located and remotely deleted. Otherwise this is no longer possible.

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