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

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0
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1answer
42 views

I Restored My Phone Wallet and Now All My Coins Vanished

TL;DR: After creating a backup, I added a pin to my "Langerhans" Dogecoin wallet for android. Now, the pin doesn't get accepted (or I forgot it). Finally, I used the "Restore Backup" function and got: ...
1
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0answers
40 views

Getting Bitcoin address from Android Bitcoin wallets

In the android app that I am developing, I need to send a request to check if other Bitcoin apps exist on the user’s phone, and if that is the case, I need to get the user’s Bitcoin address from the ...
1
vote
0answers
47 views

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 ...
1
vote
0answers
73 views

How to sign a transaction using BitcoinJ

I am having problem signing the transaction using BitcoinJ library without the Wallet instance, I only have the Transaction class instance and the ECKey in order to sign the transaction. Is there a ...
1
vote
0answers
59 views

Do we need in-app billing for bitcoin-like app?

Apps that use bitcoin contains transactions e.g. deal with a real money. Google says that if we deal with a real money, it has to go over their in-app billing service. I checked other bitcoin apps on ...
3
votes
1answer
116 views

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.
1
vote
1answer
363 views

As of Feb 2015, what's the most technically secure wallet for Android?

I want a wallet on my Android phone that is rooted. I'm new to Bitcoin and I'd like to know which one is technically secure.
3
votes
1answer
528 views

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 ...
0
votes
1answer
214 views

Is there a Android POS full node wallet apps that is open source? An app that can also stake?

Are there any Android Proof of Stake apps that is open source. The peercoin app seems to be a light client. Some of the apps seem to be QT transformed to Android.
2
votes
1answer
203 views

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 ...
3
votes
2answers
299 views

How can I watch an address on Windows and Android?

I want to be informed of transactions of my Bitcoin address on the Windows and the Android app. Can I use the same Bitcoin address on both? If yes, how can I backup the address on Windows and restore ...
1
vote
1answer
91 views

How to choose address in BlockChain Android Application?

If I want to receive funds using the Blockchain Android application I click on the arrow on the top of the screen which brings up the Request Bitcoin screen, showing the QR-code for easy scanning. ...
1
vote
0answers
66 views

Altcoin apps stealing hashes?

It was super cool to discover so many alt coins have cloned the Bitcoin Wallet Android app, however I noticed that the phone started running unusally hot after installing all the coin apps, even when ...
0
votes
2answers
265 views

Spend BTCs from a paper wallet

So, I want to create a cold storage bitcoin address to store incoming BTCs from donations and payments (I'm a freelance developer so I'm getting used being payed with BTC). Since this address has to ...
1
vote
1answer
91 views

How can non-Coinbase customers pay to Coinbase from Android?

Scenario: Say I want to create a shopping app on android. After filling the shopping cart, when the user wants to check out, he is asked to pay me the bitcoins. I have created an account on ...
1
vote
1answer
628 views

How to build a bitcoinj checkpoint file

How can I build a bitcoinj checkpoint file like the Bitcoin-wallet checkpoints?
3
votes
1answer
922 views

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?
1
vote
1answer
3k views

How can I restore my dogecoin wallet (android client)

How can I restore my dogecoin wallet backup? It was created by the dogecoin android client and lives in my Google Drive account. This question already exists, but no answer is given for Android (and ...
-1
votes
2answers
161 views

Write an android application

What is the best way for me to go about writing a new Bitcoin wallet application? Is piggybacking off API's like blockchain.info or coinbase a good tactic? Would the application then be OK to ...
1
vote
1answer
158 views

Validate bitcoin address from android application

How I can validate bitcoin address from android application? It is better to have solution without calling external services...
-3
votes
1answer
250 views

bitcoin for my android app [closed]

I am panning to build an android app for my college cafeteria where student can buy coffee using bitcoin and the can recharge the bitcoin through some source(from college bank). please give me some ...
2
votes
2answers
488 views

Is there an Android Bitcoin app that can interact with other Android Apps on the same device?

Suppose I'm developing a Bitcoin-based Android app. It could do anything: user pays Bitcoins to play a game, order a pizza, accept charitable donations. Whatever it does, it does it in Bitcoins, and ...
9
votes
3answers
492 views

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 ...
3
votes
3answers
7k views

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?
5
votes
2answers
489 views

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 ...
4
votes
1answer
154 views

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 ...
7
votes
3answers
4k views

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 ...
7
votes
2answers
1k views

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 ...
18
votes
7answers
1k views

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?