Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to keep a low cell phone bill [title] Refrain from making unnecessary purchases. [step] While it's tempting to buy a popular ringtone or a trendy wallpaper, that's just an extra expense that doesn't make your phone work any better. Some phone companies offer ringback tones, as well, which are not necessary components in making your phone work for you.

Ending1: [substeps] Keep your phone in a phone pouch. This can also be used to save space in your pocket and assist in storage. Ending2: Analyze the age of your phone and determine if insurance is really worth the price. Often, when a phone gets to be several months old, insurance isn't worth the cost. Ending3: [substeps] Remember that you can make your phone work the same way as any other phone: it is capable of holding all numbers, including notifications and unlimited free id. [title] Contact your provider to explain your purchase preferences. Ending4: In many cases, though, a high-functioning phone can survive without all your monthly bills. [substeps] Even if you shop around, it's important to invest in a particular quality chip.

Answer format: ending1/ending2/ending3/ending4