I need an Android-only mobile app that can accept payments in USDT. The flow should feel similar to a light trading wallet: users log in with a conventional email-and-password form, the session can be protected by an optional screen-lock/PIN, and once inside they see a live candlestick or line graph that moves up and down with real-time market data. Key points I must keep control of: • All brand assets—logo, app icon, and user-profile placeholders—should be editable from my side without needing a new build. • The USDT payment module has to generate deposit addresses, confirm incoming blockchain transactions automatically, and show the credited balance in the app. • A simple admin area (web panel or in-app hidden screen) should let me freeze, release, or refund balances and adjust trading fees. • Charts can pull their feed from a public API (Binance, CoinGecko, or similar); just make sure the source is clearly documented so I can swap it later if needed. Deliverables: 1. Full Android Studio project with clear, commented code. 2. Working APK for testing. 3. Brief setup guide covering wallet keys, API credentials, and how to replace visual assets. Acceptance criteria: USDT deposits confirm on-chain and appear in the user’s balance; login and screen-lock work reliably; the price graph updates at least every 10 seconds; and I can change the logo from the admin section without reinstalling the app. If you have experience with crypto SDKs or exchange APIs, please mention it—speed and security are the priorities here.