GMGN Card Uses a Separate USDT Balance

The most important operating detail is simple: GMGN Card is funded before use. Launch posts and the tracked card record describe USDT top-up, no overdraft and a separate card balance.

A separate balance limits accidental spending

A separate balance limits accidental spending from assets you meant to keep. It also means a declined payment may just be a balance or fee-buffer problem rather than a wider account problem.

The network question is still open

The current card record lists USDT as the supported crypto, but the supported top-up blockchain networks are not clearly listed. That is worth checking inside the actual deposit screen before sending funds.

A better first transfer

Send enough for a small test purchase and fees, not a large operating balance. Once you know deposits, authorization holds, payments and refunds behave as expected, you can decide whether the convenience is worth more balance.

Tracked details on the GMGN Card page.