Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to conference call on an android [title] Launch your android's dedicated phone application. [step] You should find the phone app icon on your home screen. Tap to launch.

Ending1: [title] Enter a number or search for a friend to call. [step] You can either directly enter your friend's number in the number field, or search for him/her in your contacts lists. Ending2: [substeps] Tap the " search " button at the bottom of the screen to begin. [title] Tap the headset icon from the menu. Ending3: [title] Tap the " incoming calls " button. [step] This will be located at the bottom right corner of the screen. Ending4: [title] Set the cellular data plan you want. [step] You can set the amount of data plan you want to start with using any mobile device, as long as you know what number is in use to track your cellular data usage.

Answer format: ending1/ending2/ending3/ending4