使用说明Usage Guide

主界面顶部显示两项权限状态，绿色表示已开启，红色表示未开启。两项均须开启。The top of the main screen shows two permission indicators. Green means enabled; red means not yet granted. Both must be green.

主界面中部有三个银行按钮：DBS、OCBC、UOB。点击目标银行，确认切换即可。当前选中的银行以绿色高亮显示。The main screen has three bank buttons: DBS, OCBC, UOB. Tap your bank and confirm. The active bank is highlighted in green.

主界面左上角有 EN / 中文 两个按钮：Use the EN / 中文 buttons at the top-left of the main screen:

• EN：界面英文，语音播报英文（"Payment received. X dollars"）English UI and voice announcement ("Payment received. X dollars")
• 中文中文：界面中文，语音播报中文（"收到付款，X 元"）Chinese UI and voice announcement ("收到付款，X 元")

收到 PayNow 转账后，App 自动执行：When a PayNow payment arrives, the app automatically:

1. 播放提示音（叮咚声）Plays an alert chime
2. 语音报出金额（例如："收到付款，五十元"）Announces the amount ("Payment received. Fifty dollars")
3. 记录收款信息（日期、时间、金额）Saves the payment record (date, time, amount)
4. 主界面实时更新收款列表Updates the payment list in real time

主界面下方显示当日收款记录：Today's payments are listed in the main screen:

底部汇总显示当日笔数和总金额，例如：今日合计 2：S$62.80A running total is shown at the bottom, e.g. Daily total 2: S$62.80

主界面有一个「允许息屏」开关：The main screen has an "Allow Sleep" toggle:

• 关闭（默认）：屏幕保持常亮，适合将手机放在收银台展示。Off (default): screen stays on — ideal for placing the phone on a counter.
• 开启：屏幕可按系统设置正常熄灭。开启后建议完成以下三项设置：On: the screen may turn off normally. If you enable this, also complete these three steps:
  1. 关闭 PaySound 的电池优化
     设置 → 应用 → PaySound → 电池 → 不受限制 Disable battery optimization for PaySound
     Settings → Apps → PaySound → Battery → Unrestricted
  2. 关闭所用银行 App 的电池优化（DBS / OCBC / UOB，步骤同上）
     银行到账通知需要银行 App 被推送服务唤醒，电池优化可能导致唤醒失败 Disable battery optimization for your bank app (DBS / OCBC / UOB, same steps)
     Payment notifications require the bank app to be woken by the push service — battery optimization can block this
  3. 锁屏通知显示完整内容
     设置 → 锁屏 → 通知 → 显示内容 Set lock screen notifications to show full content
     Settings → Lock screen → Notifications → Show content

• App 需保持在前台运行：不要按 Home 键切换到桌面或其他 App，否则监听会停止。如需息屏，直接按电源键关闭屏幕即可，监听不受影响。 Keep the app in the foreground: do not press the Home button to switch to the home screen or another app — this stops monitoring. To turn off the screen without stopping monitoring, press the power button instead.
• 系统重启后：App 不会自动启动，需手动重新打开，并确保两项权限仍为绿色。 After a reboot: the app does not start automatically. Open it manually and check that both permissions are still green.
• 保持网络畅通：银行的到账通知通过网络推送下发，断网将无法收到通知。 Stay connected: bank payment notifications are delivered over the internet. No network connection means no notification, and no announcement.
• 部分品牌手机：小米、华为、三星等有额外省电策略，可在手机管家中单独为 PaySound 设置「不限制后台活动」。 Aggressive battery management: Xiaomi, Huawei, Samsung and some other brands may kill background apps aggressively. In your phone's battery manager, set PaySound to "Unrestricted" or "No restrictions".