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Encrypting SD card, what happen if phone get dammaged?

Discussion in 'Android Devices' started by Kharl, Aug 2, 2020.

  1. Kharl

    Kharl Well-Known Member
    Thread Starter


    i have had two losses in this year, first i left the phone in the train, i luckily i had all my important data iin the pone and that was secured... all good there...

    then 5 month later i broke my phone, the phone was instantly dead, but i saved most of my data because it was all in my sd card... it is more convenient for me to have the data in the sd card, but what happen if i loose, the phone could be secured but the card can be extracted and someone could steal my information, then i heard about encrypting the SD card,,, what i have heard is that encrypt the card so only my phone can read it.... and if the phone is locked, nobody could read what i have in my sd card even if using a card reader for a computer, RIGHT?

    but what if my phone gets broken and i need to recover my data from an encrypted sd card?

    also, is it true that having a encrypted sd card makes the data reading from the phone slower?, and installed apps in the card slow too

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  2. svim

    svim Extreme Android User

    When you encrypt the microSD card the encryption key that gets created is stored securely in the phone's installed operating system, and it ties the card specifically to that same phone. So yeah, if the phone gets seriously damaged or the OS gets badly corrupted you'll lose access to the data residing on the card even if you're able physically extract the card. It's essentially password-protected but the password is the encryption key, and at that point it's not available any longer.
    So you need to access how you need to backup you data safely and logically. A lot of people are now denouncing online storage services because of the privacy issues involved, but do note that typically involves the free services. Pay-for solutions don't have to compensate expenses with data-mining, you're paying them for a service already. So there is that. But storing your data solely on your phone (internal storage media or microSD card) has its own risks, and it's not a reliable long-term archiving solution in any way.
    Backups are really important. Set something up now. Use online storage, or use your PC or laptop if you have one, or buy a dedicated external hard drive, and then set up an automatic service, or commit yourself to manually to do on a scheduled basis (most of us won't).

    A microSD card can slow down your phone's read/write (predominantly write) performance, but a lot of that is dependent on how old the card is. The problem is worse if you have a relatively dated one, not so much with newer cards. They come in varying speed classes so if your card is newer than five to seven years or so it's probably not an issue.
    Back in like KitKat days (2012) encrypting the storage media was a bigger issue but now smartphone hardware is a lot more advanced so any speed hit between encrypted <> not encrypted is negligible.
    So the whole issue is very conditional, just use a quality, newer card.
    (Newer, faster, brand name cards don't cost that much more and even then it's an investment in your data. Those really cheap, generic cards can be very problematic. it's one thing to shop around for a good deal, another to just buy the cheapest bargain-bin special.)
    ocnbrze, Deleted User and Dannydet like this.
  3. lunatic59

    lunatic59 Moderati ergo sum

    Storing important personal data on an unencrypted SD card is like keeping your life savings in cash in your wallet and then attending a pickpocket convention. You are asking for trouble. @svim is correct, backups are very important. I always backup those sensitive and irreplaceable files in multiple secure locations, with at least one being some form of cloud, or off-premises site.

    I guess the question is how much of your privacy and security are you willing to sacrifice for convenience?
  4. Kharl

    Kharl Well-Known Member
    Thread Starter

  5. ocnbrze

    ocnbrze DON'T PANIC!!!!!!!!!

  6. Davdi

    Davdi Android Expert

    I don't store anything even vaguely important on my phone (Or tablet), except photos which are automatically backed up to Google photos. the only other things on my phone are some mp3 files which are backed up in several places anyway.
    lunatic59 and ocnbrze like this.

Samsung Galaxy S8 Active Forum

The Samsung Galaxy S8 Active release date was August 2017. Features and Specs include a 5.8" inch screen, 12MP camera, 4GB RAM, Snapdragon 835 processor, and 4000mAh battery.

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