Recovery Electrum PIN

[sigma_fs]

Hello all.
A few years ago I used an Electrum on Android Phone.
Now I forgotten my PIN (password) and seed phrase.
I don't login to my BTC wallet.
Is there a procedure for recovery PIN and login successfully to wallet?
Is there a procedure for cracked PIN?
Via USB from PC to Phone I see only file called "blockchain_headers" and empty folder Fork and.

Thank you for advance

[1714577133]

1714577133

[JeromeTash]

There is no way of recovering your PIN.

But I have  a question. Did you by any chance update your mobile wallet to the latest version recently?
If you did then there is a chance you might access your wallet. For some reason the wallet that were initially using different passwords now use the same PIN you use to log into your phone. The old password you may have set for your wallet won't work. Try your phone PIN and see if it works

[o_e_l_e_o]

If you have neither your PIN or your seed phrase backed up, then your only real option is to recover the wallet file and then try to brute force access to it.

If your phone is rooted, you can find the wallet file in /data/data/org.electrum.electrum, and you can copy it to your computer from there.

If it isn't rooted, then you can connect your phone to your computer and use the Android Software Development Kit. Instructions here: https://stackoverflow.com/questions/13006315/how-to-access-data-data-folder-in-android-device

[sigma_fs]

There is no way of recovering your PIN.

But I have  a question. Did you by any chance update your mobile wallet to the latest version recently?
If you did then there is a chance you might access your wallet. For some reason the wallet that were initially using different passwords now use the same PIN you use to log into your phone. The old password you may have set for your wallet won't work. Try your phone PIN and see if it works

The electrum version is 3.3.7.0
I didn't update from 2 years.

[BitMaxz]

The electrum version is 3.3.7.0
I didn't update from 2 years.

That's actually bad if you don't have the backup seed(which is very important) next time at least save the backup seed somewhere in your phone or in the piece of paper so that you can recover your wallet in the future.

I think the solution, for now, is to recover the data from your Electrum wallet and brute-force as suggested above.
Try to follow the o_e_l_e_o  suggestion after you got the data you can able to brute-force the data and recover your seed phrase.
It was supported on BTCrecovery here https://github.com/gurnec/btcrecover

[JeromeTash]

The electrum version is 3.3.7.0
I didn't update from 2 years.

Try your luck and update the wallet to the latest version and see if the PIN you use to unlock your phone will work on unlocking the wallet (I assume you already have an unlocking  PIN set on your phone)

It happened to me when I updated my mobile wallet. Instead of accepting the password I used for setting up the wallet, it was only accepting my mobile PIN to unlock the wallet. If this method doesn't work then you can try other suggestions above.

[nc50lc]

The electrum version is 3.3.7.0
I didn't update from 2 years.

Try your luck and update the wallet to the latest version and see if the PIN you use to unlock your phone will work on unlocking the wallet (I assume you already have an unlocking  PIN set on your phone)

I got curious and have tried this but it only accepted the PIN that I set in v3.3.7 (as password in v4.0.7), it didn't accepted my lock-screen pin.
That's a very reckless bug in Electrum if that happened.

[NotATether]

I got curious and have tried this but it only accepted the PIN that I set in v3.3.7 (as password in v4.0.7), it didn't accepted my lock-screen pin.
That's a very reckless bug in Electrum if that happened.

I'm reasonably sure that Electrum for Android won't accept your phone's PIN. Can't say for certain because I use iOS, but Electrum uses Kivy as its backend for Android and that doesn't have any API to show Android's standard screen for authenticating with the phone's PIN again. Android's SDK does have such an API (see here) but Electrum is written in Python and the SDK has no Python bindings.

This is where the PIN/password entry screen is defined: https://github.com/spesmilo/electrum/blob/master/electrum/gui/kivy/uix/dialogs/password_dialog.py, as you can see Electrum is handling all of this authentication by itself so it has no way of knowing your phone's PIN.

[nc50lc]

I'm reasonably sure that Electrum for Android won't accept your phone's PIN. Can't say for certain because I use iOS, -snip-

I'm also certain that it wont work but that's what the test was for, to try to reproduce what JeromeTash has described because I use android as well.

[bob123]

If it isn't rooted, then you can connect your phone to your computer and use the Android Software Development Kit. Instructions here: https://stackoverflow.com/questions/13006315/how-to-access-data-data-folder-in-android-device

If your android device is not rooted, you can not just simply access the content of a given application since all the files and folders are owned by that application.
The unix filesystem permissions are preventing the access.

Using adb together with run-as requires the application to have the debuggable flag to be set to true, which is highly unlikely for an application out of beta.

[JeromeTash]

I got curious and have tried this but it only accepted the PIN that I set in v3.3.7 (as password in v4.0.7), it didn't accepted my lock-screen pin.
That's a very reckless bug in Electrum if that happened.

I actually made the update after a long time of not updating and was surprised that my password I constantly used was no longer accepted but when I entered the PIN the wallet opened. Surprisingly the PIN I used is the same as my screen unlocking PIN. Perhaps I used the same PIN for both the APP and screen lock, I don't even remember setting it because it was a long time ago.

Edit:
But what is even more weird is that my PIN code option in the mobile wallet is off 

[HCP]

I just had a weird experience with the Electrum mobile wallet as well...

The default_wallet had the same "password" as my mobile device PIN? ... which I don't remember setting... as I only use the mobile app for "testing" and all the test wallets have the same password set.

After changing the wallet password back to the "standard" one that I use, I'm unable to replicate this issue... even after setting/unsetting the PIN code feature several times. I can only assume that I had actually set the password to be the PIN at some point? Although I'm not sure why I would have done this...

[sigma_fs]

I installed Android Studio and on device manager I see necessary folder but i can't copy the file.
Can we help me?

https://ibb.co/wQ2scSL

[o_e_l_e_o]

Can we help me?

Follow the instructions in the first answer in the link I provided above: https://stackoverflow.com/questions/13006315/how-to-access-data-data-folder-in-android-device

You can only use the run-as command if the application is debuggable. Did you enable debugging in your phone's developer options? Did you try attaching the debugger to Electrum?

Alternatively, try using the backup command to back up all application data to a file on your computer which you can then decompress and explore.