Postpaid security deposit, what is it? This is a mandatory deposit when signing the contract that the customer must pay for a guarantee that can be returned in whole or in part according to the agreements previously agreed in the clauses. Related articles Will I be able to top up my postpaid account? I received my bill and don’t understand the charges. How do I activate a postpaid or hybrid plan? What are the benefits of Digicel's hybrid plans? What are the terms and conditions for signing a contract with Digicel?