Encrypt microsd - ZTE Axon 7 Questions & Answers

I was reading the threads about the phone encryption and the issues there, but is there any way to encrypt the microsd card? In the situation I lose my phone, I don't want anyone to be able to go through my photos, etc.

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Encryption questions

Had decided that I want to encrypt my entire phone along with encrypting the external SD card on my GS4.
I have a few questions on this before proceeding.
1. Will I have to encrypt the entire device itself first before encrypting the external SD card?
2. And I heard that after encrypting the whole phone or device, it cannot be decrypted. Is this true?
If so, then will a Factory Reset be able to restore the phone to a Decrypted state again?
Thanks in advance

Locked out of encrypted files

So I bought the S7 edge popped in my SD card and encrypted It. The card was giving me some issues so I backed up my files on my Pc formated the SD card and reloaded the files (MP3s) now when I go to play many of the songs they don't play and just say "sorry unable to play file type" it's odd because about half of the songs do work any ideas for fixing this I have a quite a large music collection and it would be quite pain staking to have to download these one by one again
Would encrypting them and decrypting them help?
Really none of the brilliant minds here at Xda have any idea?
Did you copy the files off with the SD in a pc reader or via mtp from the phone? I would guess the the base encryption key data is different since you reformatted the card, it would make sense to me because otherwise there would be no point to supporting SD encryption.
C0derbear said:
Did you copy the files off with the SD in a pc reader or via mtp from the phone? I would guess the the base encryption key data is different since you reformatted the card, it would make sense to me because otherwise there would be no point to supporting SD encryption.
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SD in a pc reader. Is there anyway for it to read the files again?
chad187 said:
SD in a pc reader. Is there anyway for it to read the files again?
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Click to collapse
If Google did their work well, not likely.
I don't know the details but the only consumer hope would be with the card inserted in the device that formatted it as theoretically the encryption of the SD card should be done with private key data that is tied to the device it was formatted within (in addition to whatever private data you provided such as a PIN). Otherwise it would be too easy to just move the card to another device to decrypt the data.
I've seen some references to the Android SD card encryption *not* necessarily encrypting media files (music, movies, pictures?) so it's possible those files were not at all encrypted - which is substantiated by the fact that you can play SOME of them.
It may be that the files that don't play are, unfortunately, simply, corrupted data and not encrypted at all. ;^(
chad187 said:
So I bought the S7 edge popped in my SD card and encrypted It. The card was giving me some issues so I backed up my files on my Pc formated the SD card and reloaded the files (MP3s) now when I go to play many of the songs they don't play and just say "sorry unable to play file type" it's odd because about half of the songs do work any ideas for fixing this I have a quite a large music collection and it would be quite pain staking to have to download these one by one again
Click to expand...
Click to collapse
I had the exact problem, it seems to be some issue with a lot of S7's from from my research online. After almost giving up after a few weeks I finally did find a fix which hopefully will work for you and anyone else who has encountered/ will encounter this problem. Here are the steps I took:
1. After the sd card became unresponsive on my phone after encryption, I transferred all my files from the sd card to my PC. I had to do this via the sd card slot on my laptop as the card was not being recognized when connected via the phone.
2. I then formatted the sd card on my PC. For those not familiar with the process just right click on the card in "my computer" and select format then quick format.
3. I then reinserted the card into the phone to make sure it was recognized, then removed it again, inserted it into the PC and transferred all the files back over.
4. I went into my phone under security settings and changed lock screen security to "none" while leaving fingerprint on.
5. I put the sd card back into the phone with the files. They won't be accessible as yet since they're encrypted but the next step is to go ahead and encrypt the sd card. Wait however long you have to, for me it took less than a min. After this go back and decrypt the sd card, let that process run through then the files should now be decrypted and accessible. If the sd card goes unresponsive again just try again by formatting the sd card and putting the files back, this time maybe a few files at a time.
If this method works for you I would suggest backing up your data frequently and staying away from encrypting the sd card at least until samsung/android release a fix for this issue.

Encrypt sdcard

I can't find an option to encrypt the SD card. Under Settings->Security->Encryption there is "encrypt phone", but it doesn't seem to affect the SD card. Anyone know how to encrypt the sd card on this device?
Bump
I think that you have to format it as internal storage instead of a external SD.
When formatted as Internal it's encrypted.
BUT SDcard cannot be used in other devices then!
Thanks for the reply coolhead.
That's kind of disappointing. Am i correct that on some devices you can encrypt the SD card while its still external storage? I am almost 100% sure that my HTC M9 would do that.
I don't know it's been a long time for me to own an android device.
So this marshmallow is really new for me.
I just hate the idea that i cannot use the SDCard for apps if i use it as external.
Maybe someone else can answer your question about other devices able to do that.
coolhead said:
I don't know it's been a long time for me to own an android device.
So this marshmallow is really new for me.
I just hate the idea that i cannot use the SDCard for apps if i use it as external.
Maybe someone else can answer your question about other devices able to do that.
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I don't like not being able to use for apps when its on the external either. I checked on a friends S7, and found directions for doing it on the M9. So you can encrypt sdcard when used as external on other marshallow devices. Foiled by Lenovorola!!
I think encryption is not working in general and there is an issue about it: https://jira.lineageos.org/browse/BUGBASH-253
I am also quite sure that this bug was already in cyanogenmod and also reported there.
This refers to the encryption of the smartphone, not to the encryption of the microSD by adoptable storage.
adoptable storage with encryption working fine on LOS 14.1

It's possible to use micro SD card as internal storage without encryption ?

Hi all,
I'm new here and I've read a lot of posts regards new android MM, but whitout a answer.
I've got now a new galaxy j5 2016 that become with MM preinstalled.
Until yesterday I used Lollipop on other smartphone.
Now the problem is :
It's possible to use micro SD card as internal storage without encryption into my new galaxy J5 2016 as I did with my old smartphone with lollipop?
I know how to root the device and I know that I can use sd card as internal storage, but I don't want to encrypt, because in case of breaking the smartphone, I will lost my photo and documents.(backup is never up to date!).
Thanks for answers..
Best regards
Not sure if you already found the answer to your question but it is generally not possible to mount the SD card as internal storage without encrypting the sd card, let me know if you found any other workaround for this issue.

SD Card encryption question

Hello,
I see in security options one for put a password to SD Card, but it does not encrypt the SD. Also I have seen in internet it is very easy for a thief to get the password in a PC. Do you know if is there any way to encrypt the sd card? also is internal memory encrypted?
thanks.

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