Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to change a sim card in an iphone [title] Get an iphone sim card opener. [step] A sim card opener is a small tool with an oblong body and a pointy metal tip. Every iphone package comes with one, but if you managed to lose yours or you no longer have your iphone's box, a simple paper clip is a great substitute.

Ending1: [substeps] Empty the sim card until the sim tray is full. [title] Insert the sim card into the iphone's body. Ending2: [title] Insert the opener into the sim tray. [step] Look around the sides of your iphone and you should find a small hole no larger than the tip of a pencil. Ending3: [substeps] If your iphone's sim card is lost, the sim card opener is very helpful. If you can't find an iphone, contact the manufacturer and ask if the iphone offers open-source sim cards. Ending4: There are plenty of new iphone tablets you can purchase with openers. Some will even come with the sim card opener feature, and you can use a remote control to get the sim card ready for use.

Answer format: ending1/ending2/ending3/ending4