To pay with Cash App at a store using your CITYCALL I8550, follow these steps:
Make sure that you have the Cash App installed on your CITYCALL I8550, and that you have a balance available in your account.
Go to the store and find the item you want to purchase.
When it's time to pay, tell the cashier that you want to pay with Cash App.
Open the Cash App on your CITYCALL I8550, and tap on the "Pay" button.
Enter the amount that you want to pay, and tap on the "Pay" button again.
Enter the cashier's phone number or email address, or scan their QR code if they have one.
Tap on "Pay," and confirm the payment.
The cashier will receive a notification on their phone, and they will confirm the payment once they have received the funds.
Note: Some stores may not accept Cash App as a payment method, so it's always a good idea to check with the store in advance to make sure they accept it.