Bitcoin Stack Exchange
Bitcoin Stack Exchange

Questions tagged [android]

Collects general questions about using Bitcoin on Android devices. For questions about the popular wallet use btc-wallet-for-android.

83 questions
23
votes
9 answers

Can I send bitcoins with my mobile phone?

Is it possible to send and receive bitcoins with a mobile phone? If so, are there bitcoin clients for Android or iOS?
lemonginger
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10
votes
4 answers

Do any of the Android-based wallets support cold storage?

Specifically I'm looking for Armory-like functionality where the transaction can be generated on an online system, transported to an offline android tablet or netbook via USB or QR code where it can be signed, then transported back to an online…
David Perry
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9
votes
4 answers

Is there a known way to export my wallet private key from the "Bitcoin Android" app (com.bitcoinandroid)?

A while back, I installed the Bitcoin Android app and moved 5 BTC on it. Fast forward to now, new phone, new ROM, and the app seems completely unwilling to update its blockchain, meaning I have no way to move my BTCs elsewhere. Looking at the…
Metal
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8
votes
3 answers

Claim Bitcoin cash from android bitcoin app

I have some bitcoin stored in the bitcoin wallet android app I want to transfer my inherited Bitcoin Cash (BCC) to an exchange. The android app doesn't care about BCC. I tried to decode a backup of my wallet to use the private key in Bitcoin ABC…
Ovidiu Buligan
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7
votes
2 answers

Interoperability of Bitcoin clients

Is it possible to operate on the same wallet from multiple devices? If I run, for example Android on a device, and Windows/Linux on another, how do I share the same private key(s) of my wallet between these device so I can send money from any of…
usr-local-ΕΨΗΕΛΩΝ
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6
votes
2 answers

Where is the Mycelium wallet file stored?

I have a fairly straightforward question that's still unanswered after googling for days for a definite answer, I hope you guys can help me out with this one here. Background: I have Mycelium Bitcoin Wallet installed on my Android phone [ROOT], I…
Dhuum
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5
votes
2 answers

How exactly does MyWallet's Android client work?

When I create an account via my desktop browser, I am assured that the password only exists on my browser, and is not saved. So, if I "pair" an Android device with MyWallet, can or can't I send BTC without entering the password? How does this work…
ripper234
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4
votes
4 answers

What's the best Android wallet client for bitcoin?

There are many bitcoin wallet clients on android market. What is the best considering security, interoperability and usability?
fccoelho
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4
votes
2 answers

What multi-sig wallets are there for Android/Jolla?

TL;DR: What wallet apps are there for android (or sailfishOS) that has "true" support for multisig? Requirements/rationale Thinking a bit, if I'm to possess serious amounts of bitcoins, I want a well-secured savings wallet - or, eventually just a…
tobixen
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4
votes
1 answer

What client-side checks does blockchain's android client do?

Blockchain just came out with a great Android client, based on bitcoin-wallet. In the description it says "No blockchain downlaod [sic.]". However, in the documentation of their sources, they say "When run for the first time, the block chain needs…
o0'.
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4
votes
2 answers

What app should I use to import my wallet keys?

I have the private key backup from my Android phone wallet. My phone broke and has been replaced but I can't see any import option in the Android wallet app. How do I get my BTC back?
Loz
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3
votes
1 answer

ECDSA signature with r value of 31?

occasionally on Android we are generating an ECDSA signature. This turns out to have a "r" length of 31 bytes. Is that valid? For reference here is a nice diagram outlining the ASN.1 structure of such a signature: how do you figure out the r and s…
René Heuven
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3
votes
1 answer

Create Android Alt Coin Wallet

I am looking for base steps or general guidelines how to create lightweight android wallet for existing alt coin "X". So, lets start with simple questions: Do I need to run a node on the server Can I clone and configure existing open source…
Alex
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3
votes
1 answer

Android BTC clients that remotely use my Bitcoin Core wallet?

Are there any Android BTC clients that remotely use my Bitcoin Core wallet so I don't have to use another wallet specific for my phone? I am running my own BTC node.
Geremia
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3
votes
1 answer

Official or default Bitcoin wallet for Android

I'm new to cryptocurrencies, and I noticed that both Litecoin and Dogecoin have official wallet apps for Android. Does Bitcoin similarly have an official Android wallet app? If not, is there a community standard or some widely used app?
Mark Micallef
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