Apple iPhones come in fixed storage configurations, with the most affordable versions offering lower storage. Even though the current generation iPhone 14 Pro starts at 128GB, many older generation iPhones start at 64GB. iOS itself takes up upwards of 10GB of storage. The only way you can ensure you don’t run out of storage on your Apple iPhone is either opting for a higher storage capacity variant or buying the iCloud subscription, which can set you back by $2.99 per month for a 200GB plan.