topup

Top-up, or topping up, is the act of adding funds to a prepaid account, card, or service to enable continued use. The term is widely used in telecommunications, public transit, and digital wallets. In mobile telephony, a top-up increases the balance on a prepaid SIM card so calls, texts, and data can be used until the credit runs out. Transit systems and transport cards also require periodic top-ups to maintain access. Online wallets and gaming or digital services may require top-ups to purchase goods or services.

Top-up methods vary by country and provider. Common options include purchasing a physical top-up voucher at a retail outlet, using a card-to-wallet transfer, bank transfers, mobile apps, or cash-in-person at agent locations. Some operators allow automatic or recurring top-ups. Transactions typically involve authentication and confirmation of the amount and recipient account. In many regions, fees, exchange rates, and minimum/maximum top-up limits apply.

Safety and regulation: Users should only top up through trusted channels to avoid fraud. Top-ups may be irreversible or subject to restrictions if performed via compromised devices or phishing schemes. Regulators may require clear disclosure of fees and consumer protections for prepaid services.

See also: prepaid card, mobile credit, e-wallet, top-up voucher.