Bitcoin Forum
February 28, 2017, 12:58:45 AM *
News: Latest stable version of Bitcoin Core: 0.13.2  [Torrent]. (New!)
 
   Home   Help Search Donate Login Register  
Pages: « 1 2 3 4 5 6 [7]  All
  Print  
Author Topic: Electrum for Android  (Read 21728 times)
romerun
Legendary
*
Offline Offline

Activity: 1050


Bitcoin is new, makes sense to hodl.


View Profile
March 20, 2016, 01:22:37 PM
 #121

Oh no, after using the android  wallet for a while it cannot send anymore with this error "unpack requires a string argument of length 4". I guess some inputs might have broken the functionality.
1488243525
Hero Member
*
Offline Offline

Posts: 1488243525

View Profile Personal Message (Offline)

Ignore
1488243525
Reply with quote  #2

1488243525
Report to moderator
1488243525
Hero Member
*
Offline Offline

Posts: 1488243525

View Profile Personal Message (Offline)

Ignore
1488243525
Reply with quote  #2

1488243525
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
1488243525
Hero Member
*
Offline Offline

Posts: 1488243525

View Profile Personal Message (Offline)

Ignore
1488243525
Reply with quote  #2

1488243525
Report to moderator
SeanPiknick
Member
**
Offline Offline

Activity: 73


View Profile WWW
April 21, 2016, 11:33:06 AM
 #122

Oh no, after using the android  wallet for a while it cannot send anymore with this error "unpack requires a string argument of length 4". I guess some inputs might have broken the functionality.

Oh yes! I have the same problem

Tracking of cryptocurrency startups - https://icotracker.net
ThomasV
Moderator
Legendary
*
Offline Offline

Activity: 1806



View Profile WWW
April 23, 2016, 06:10:06 AM
 #123

Oh no, after using the android  wallet for a while it cannot send anymore with this error "unpack requires a string argument of length 4". I guess some inputs might have broken the functionality.

thanks for noting this. I just uploaded a new apk on Google Play

Electrum: the convenience of a web wallet, without the risks
bL4nkcode
Sr. Member
****
Offline Offline

Activity: 378


</>


View Profile WWW
April 26, 2016, 05:10:33 PM
 #124

I'm a first timer to use electrum, because i prefer to use android I download it from google play store, but unfortunately I cant use properly these app in my android, it always crash when I'm going to use it, so better to uninstall. And it seems there are so many negative feedback here,so better not to use  it just now, I just try again if there is a new update of the app

sacko
Sr. Member
****
Offline Offline

Activity: 407



View Profile
April 29, 2016, 12:23:41 PM
 #125

Are the stated issues fixed in the new update?
rampantparanoia
Sr. Member
****
Offline Offline

Activity: 322



View Profile
October 17, 2016, 06:06:41 PM
 #126

I have the old python/e4a version of the electrum wallet. I'm looking to get the wallet & private keys from my device so that I can consolidate the address on my PC and then upgrade electrum on my device. does anyone know where those files are located on my device?
ThomasV
Moderator
Legendary
*
Offline Offline

Activity: 1806



View Profile WWW
October 19, 2016, 07:25:26 AM
 #127

I have the old python/e4a version of the electrum wallet. I'm looking to get the wallet & private keys from my device so that I can consolidate the address on my PC and then upgrade electrum on my device. does anyone know where those files are located on my device?

all you need is the seed. you can display it from the application.

Electrum: the convenience of a web wallet, without the risks
romerun
Legendary
*
Offline Offline

Activity: 1050


Bitcoin is new, makes sense to hodl.


View Profile
January 04, 2017, 12:15:13 PM
 #128

There used to be a tutorial on how to import the default_wallet created on desktop into Android electrum. I can't seem to find it.

I remember having to do that when creating multisig wallets on desktop, then somehow transfer them to Android devices thru adb.

I bought a new phone, need to set the android electrum up from one of the default_wallet files on Desktops.
DuddlyDoRight
Sr. Member
****
Offline Offline

Activity: 281



View Profile WWW
January 04, 2017, 08:07:02 PM
 #129

Just search for files without an extension named *_wallet with "wallet_type" in contents on a PC. On Android it also just writes to a file(as shown in https://github.com/spesmilo/electrum/blob/master/lib/storage.py) but the only file I see is ./org.electrum.electrum/blockchain_headers which are from the hosted blockchain and there is no ./Android/data/ folder. It seems to be set by a setup config which isn't on github. You'd have to dig around inside the .apk. My guess is it's using some android preferences API service..

centralized seed management is ideal.. or just use a hardware wallet or the air-gap feature..

I have faith that one day this forum will get threads where people won't just repeat their previous posts or what others have already stated in the same thread. Also that people will stop acting like BTC is toy-money and start holding vendors accountable. Naive? Maybe.
Lumpi101
Newbie
*
Offline Offline

Activity: 8


View Profile
January 15, 2017, 04:38:02 PM
 #130

Hello,

neither I am an expert in bitcoin/Electrum nor have I ever traded/bougt bitcoins but I plan to...
For that I would like to make an offline wallet (or "cold storage" how it is called by Electrum) on an Android phone. And a watch-only-wallet on another phone or computer.
So here some questions:

1.) Is that possible with the Android version? I can't find any "import (unsigned) transaction", "sign" or "export (signed) transaction" buttons. I couldn't try it because I have no bitcoins yet, so I can't create any transaction.

2.) When I create a wallet I have to type in a 6 digit pin (which is the encryption passphrase for the private key(s)/seed, right?). Is there any possibility to choose any alpha-numeric "pin" with any length? I would really prefer a longer, not-only-digts - passphrase. (This was already asked in this thread but I don't really understandd the answer...)

3.) I think there is a minor bug in the app: I have to tap three times the upper right menu in order to open it (on two smartphones, one with Jelly Bean the other with Marshmallow).

4.) (just for interest): What is the seed for the seed?  Cheesy The "Electrum seed" is just a 128 bit (pseudo) random number... but what is the seed for that number? Is it the time on the phone?
deepcolderwallet
Newbie
*
Offline Offline

Activity: 5


View Profile
February 04, 2017, 01:58:37 PM
 #131

Hello,

neither I am an expert in bitcoin/Electrum nor have I ever traded/bougt bitcoins but I plan to...
For that I would like to make an offline wallet (or "cold storage" how it is called by Electrum) on an Android phone. And a watch-only-wallet on another phone or computer.
So here some questions:

1.) Is that possible with the Android version? I can't find any "import (unsigned) transaction", "sign" or "export (signed) transaction" buttons. I couldn't try it because I have no bitcoins yet, so I can't create any transaction.


I'd like to do the same, Lumpi101 , and although I already have bitcoins my plans went down water since the air-gapped phone that should sign the transactions now have bitcoins in its wallet but cannot sign anything, because Electrum's Android version apparently does not support signing transactions. I got very disappointed with that, looks like signing transactions is an ordinary feature for a wallet manager and Electrum won't do that.
Does anybody know another wallet manager FOR ANDROID that could sign transactions and can be installed via apk?
ThomasV
Moderator
Legendary
*
Offline Offline

Activity: 1806



View Profile WWW
February 04, 2017, 02:44:58 PM
 #132

I'd like to do the same, Lumpi101 , and although I already have bitcoins my plans went down water since the air-gapped phone that should sign the transactions now have bitcoins in its wallet but cannot sign anything, because Electrum's Android version apparently does not support signing transactions. I got very disappointed with that, looks like signing transactions is an ordinary feature for a wallet manager and Electrum won't do that.
Does anybody know another wallet manager FOR ANDROID that could sign transactions and can be installed via apk?

yes, the android version is capable of signing unsigned transactions.
all you need is to scan the unsigned transaction, either from another phone or from your Electrum desktop.
then you will see a transaction window with a sign button.

Electrum: the convenience of a web wallet, without the risks
Lumpi101
Newbie
*
Offline Offline

Activity: 8


View Profile
February 05, 2017, 12:58:34 PM
 #133

Like already said, it is possible. In my case, my fault was that I did not import the MPK to my online wallet but only one public key...
For more detailed instructions look here https://github.com/spesmilo/electrum/issues/2033
deepcolderwallet
Newbie
*
Offline Offline

Activity: 5


View Profile
February 06, 2017, 01:57:11 AM
 #134

Okay, things are getting more difficult.
I read the Lumpi101 link, and it states:

" ecdsa commented on 18 Nov 2016 • edited

This is not related to android. It is caused by the way you use cold storage.

If your watching only wallet does not have the master public key, then it cannot know the address derivation.
In that case, the cold storage will not be able to sign, (unless the address is in the cold wallet)

The following combinations should work:

    Watching-only wallet: xpub. Cold storage: seed or xprv
    Watching-only wallet: imported address. Cold storage: imported privkey

However, this does not work:
3. watching-only wallet: imported address, cold storage: seed or xprv
"


_______________________________________________________________________________ ___


The way I set the phones is:
Offline: seed
Watch-Only: imported address via QR-Code

I've already realised it won't work, so the question is: How do I export the xpub from the offline phone and import it to online phone?

Thank you guys.

UPDATE:
Nevermind guys, already figured out how to do this. I didn't realise the Electrum symbol on top left was a button with the master key data.

I'd also like to thank a lot Mr ThomasV for everything he's doing on support the Electrum's users community and apologise for any harsh-sounded statement on my previous comments.
Thank you also Lumpi101.
Pages: « 1 2 3 4 5 6 [7]  All
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!