Please choose the correct ending to complete the given sentence: Computers and Electronics: [header] How to keep your obsolete iphone [title] Check yourself. [step] Do you have to have the latest iphone? If the answer is " yes ", this article isn't for you. If the answer is either " no " or " yes, but i can't afford one " then there are ways to prolong the life of your iphone until you can afford to buy a new one or it dies.

Ending1: You have to be comfortable, patient and disciplined in using an older iphone. Comfortable with yourself, patient with the iphone and disciplined on how you use the iphone. Ending2: [title] Check your cord and batteries at the back of your iphone. [step] Charge your iphone with an adapter of your choice before you use it. Ending3: [title] Unpack your iphone from its original casing. [step] It's best to just put your new iphone in its original casing. Ending4: Remember, however, that some functions may not be easy, such as your speed, operation, and intended service. [title] Start up your iphone and buy a (if you have one) flash drive.

Answer format: ending1/ending2/ending3/ending4