: Typically start at 50GB for $0.99/month, with options up to 12TB for higher fees.

While you cannot technically upgrade the physical internal storage of an

: Go to Settings > [Your Name] > iCloud > Manage Storage > Buy More Storage . 2. External Accessories (Physical Storage)

after purchase, you can effectively "buy" extra space through iCloud+ subscriptions or by using external hardware . 1. iCloud+ (Cloud Storage)

: Use the "Optimize iPhone Storage" setting ( Settings > Photos > Optimize iPhone Storage ) to store full-resolution photos in iCloud while keeping smaller versions on your phone.

This is the most common way to get more space for photos, videos, and backups. It syncs across all your Apple devices but requires a monthly subscription.

If you want to avoid monthly fees, you can use external drives that plug directly into your iPhone's port (Lightning or USB-C). How To Buy Storage On iPhone?