When a passenger attempts to pay the metered taxi fare using a mobile QR code (WeChat Pay/Alipay) but experiences cellular network lag or payment timeout, how should the driver handle the situation?

1. Immediately lock the doors, accuse the passenger of fraud, and shout loudly
2. Remain calm, offer to share the vehicle mobile hotspot, check payment confirmation screens together, accept cash, or calmly exchange verified contact numbers if necessary
3. Seize the passenger's mobile phone and backpack as physical collateral
4. Force the passenger to pay five times the meter fare as a penalty