Expense refers to the money spent on goods or services, while payment refers to the actual act of transferring money to settle an expense. Revenue is the income generated from the sale of goods or services, while receipt is the physical evidence of receiving the revenue, such as a sales receipt or invoice. In summary, expense and payment are related to spending money, while revenue and receipt are related to earning money. **

Selling a smartphone without a receipt can be challenging, as potential buyers may be hesitant to purchase a device without proof of its authenticity and ownership. To overcome this hurdle, the seller can provide other forms of documentation, such as the original packaging, user manual, or any warranty information. Additionally, the seller can offer to meet the buyer at a location where the phone's IMEI number can be checked to verify its legitimacy. Building trust with the buyer and being transparent about the phone's history can also help facilitate the sale. **

In most cases, it is not possible to buy a new smartphone without a receipt. Retailers typically require a receipt as proof of purchase in order to process a return, exchange, or warranty claim. Without a receipt, it may be difficult to prove that the smartphone was purchased from that particular retailer. Additionally, some retailers may have strict policies that require a receipt for all transactions. **

You can buy a smartphone with direct debit payment from various retailers and mobile carriers. Many mobile carriers offer installment plans where you can pay for the phone in monthly installments through direct debit. Additionally, some retailers also offer direct debit payment options for purchasing smartphones online or in-store. Be sure to check with the specific retailer or carrier for their payment options before making a purchase. **

To set up payment with your Android smartphone, you can use various payment apps such as Google Pay, Samsung Pay, or any other banking apps that offer mobile payment options. First, download the app from the Google Play Store and follow the instructions to set up your payment method, which can include adding your credit or debit card information. Once your payment method is added, you can use your smartphone to make contactless payments at stores, online, or to send money to friends and family. Always ensure that your payment app is secure and that you follow the necessary security measures to protect your financial information. **

Yes, there are smartphone shops in China that accept payment on delivery. This payment method is commonly known as "cash on delivery" and is popular among customers who prefer to pay for their purchases upon receiving them. It provides a sense of security and trust for buyers, especially when purchasing expensive items like smartphones. Many online and offline retailers in China offer this payment option to cater to the diverse preferences of their customers. **

To activate mobile payment through your smartphone with Vodafone, you will need to first ensure that your device is compatible with mobile payments. Then, you can download the Vodafone Wallet app from the App Store or Google Play Store. Once the app is installed, you can follow the on-screen instructions to set up your mobile payment method, which may include adding your credit or debit card details. After the setup is complete, you can use your smartphone to make payments at participating merchants by simply tapping your device on the contactless payment terminal. **

To activate mobile payment via your smartphone with Vodafone, you will need to first download the Vodafone Wallet app from the App Store or Google Play Store. Once the app is installed, you can set up your payment method by adding your credit or debit card details. After your payment method is added, you can use your smartphone to make contactless payments at participating stores by simply tapping your phone on the payment terminal. It's important to ensure that your smartphone is compatible with NFC technology in order to use this feature. **