About U4C PIX💵U4C PIXU4C PIX is the fastest way for you to start conducting cash-in and cash-out operations via PIX. U4C PIX features: PIX QRCode Dynamic Immediate Due Date Static PIX Transfers (Cash-in and Cash-out) DICT (Using dict key) MANUAL PIX Refund Partial Totally Updated about 2 months ago What’s NextPIX Charge