Short answer
Choose 128GB only for light use, 256GB for most people, 512GB for heavy photo and video users and 1TB for professionals. Newer iPhones start at higher base storage.
Storage cannot be upgraded later, so buy for how you will use the phone over several years.
What fits where
| Storage | Best for |
|---|---|
| 128GB | Light users and iCloud users |
| 256GB | Most people |
| 512GB | Heavy photo and video users, gamers |
| 1TB | Professionals and 4K or ProRes video |
By model
- iPhone 13 to 16 standard models: 128GB base.
- iPhone 17: 256GB base.
- Pro models: higher base storage on newer generations.
If you buy used
Prefer 256GB or more on an older iPhone so you aren't constantly clearing space. Use iCloud to keep originals online.
Frequently asked questions
Is 128GB enough?
For light use with iCloud, yes.
Can I add storage?
Not inside the phone; you can use external storage on USB-C models.