Ownership
Buying an iPhone from a carrier in monthly installments means you’re not the owner of it, and you’ll still have to pay the remaining payments even if you decide to sell it later.
Carrier unlocked
You can choose to buy a carrier-unlocked iPhone at Apple’s website. This way, if you have to use another carrier for some time during an emergency, you can do so.
Get better deals
Some carrier companies offer better deals than others, and if you buy a carrier-unlocked iPhone from Apple, you can switch carriers whenever you like to get a good deal and save money.
International charges
For frequent travelers, it’s better to buy a carrier-unlocked iPhone from Apple. Otherwise, you’ll have to pay a daily fee if your iPhone is locked to a network in your country.
Easy return
If you are unsatisfied with your purchase, Apple offers you a 14-day return period in which you can return your new iPhone with no questions asked and get a complete refund.
Upgrade program
Unlike carriers, Apple offers an upgrade under which you have to pay a monthly fee, and you can trade in your current iPhone after 12 payments to get the latest model.