Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to top up your phone [title] Find a store that sells top-up cards. [step] Most prepaid phones can be topped up using prepaid load cards. All you need to do is to find a retail store or convenience outlet that sells the top-up card specifically for the network service provider/carrier you're using.

Ending1: [title] Go up to the cashier and purchase a top-up card. [step] Prices of these prepaid load cards are the same as the value they hold. Ending2: The best choices are sites like apple, amazon, or google. [substeps] Load cards come in either linux or jpeg. Ending3: It's usually easier to do this online since you can select the headphone app that comes with the phone. [substeps] What constitutes " top-up " is virtually all it's worth here. Ending4: [substeps] Examples of locations to look for first-generation phones include cory york, sam fitness, and spinstreet. Some popular options to find a pair of prepaid load cards include val ice, groupon and safari.

Answer format: ending1/ending2/ending3/ending4