Your Bitcoin Wallet

Flash gives you a Bitcoin wallet powered by the Lightning Network. You can send and receive Bitcoin instantly, with low fees, directly from your phone.

What the Bitcoin Wallet is for

Use the Bitcoin Wallet when you want to:

Send Bitcoin to another wallet
Receive Bitcoin from another wallet
Hold Bitcoin as Bitcoin

This page is for Bitcoin send and receive only. For dollars, use the Cash Wallet.

Receiving Bitcoin

Lightning (Recommended)

Open the Flash app and tap Receive
Your Lightning invoice and QR code will appear
Share the QR code or copy the invoice to send to the payer
Bitcoin arrives in your wallet instantly once paid

On-Chain Bitcoin

For senders using a standard Bitcoin wallet (not Lightning):

Tap Receive in the Flash app
Tap the receive type selector and choose On-Chain
Share your Bitcoin address or QR code
Funds arrive after network confirmations — typically 10–60 minutes

Sending Bitcoin

Tap Send in the Flash app
Paste a Lightning invoice, scan a QR code, or enter a Flash username
Review the amount and fee
Tap Confirm to send

Lightning payments are instant. On-chain sends may take 10–60 minutes to confirm.

Unclaimed Deposits

Sometimes an on-chain deposit cannot be claimed automatically — for example, if network fees spike above the deposit amount, or if there is a missing transaction issue. These appear in the app as Unclaimed Deposits.

How to find them

Go to your transaction list — unclaimed deposits appear with a status indicator:

🟡 Auto-claiming — the app is processing it automatically, no action needed
🟠 Approval required — fee is higher than expected, you need to approve it
🔴 Claim failed — needs manual action

Approval Required

If a deposit shows “Approval Required”:

Tap Details on the deposit
Review the fee breakdown — you’ll see the deposit amount, network fee, and what you’ll receive
Tap Approve to claim (the network fee is deducted from your deposit)
Or tap Refund to send the funds to an external wallet instead

Claim Failed

If a deposit shows “Claim Failed”:

Tap Details
Review the error message
Tap Refund to recover funds to an external Bitcoin wallet

No unclaimed deposits?

If you believe you sent a payment that has not arrived, contact Flash support with the transaction ID and amount.

Troubleshooting

“Wallet is offline” Check your internet connection and reopen the app. Your balance is safe — it will display correctly once reconnected.

My Lightning payment hasn’t arrived Lightning payments are usually instant. If it has been more than a few minutes, contact support with the invoice details.

Need Help?

Contact Flash support via the app.