If you are about to buy a new iPhone, deciding on the storage capacity is the hardest part. Apple charges a premium for higher storage tiers, so you do not want to buy 1TB if you only need 256GB.
But how does gigabytes (GB) translate to actual photos and videos? Let's look at the real-world math.
The Reality of Available Storage
First, a 128GB iPhone does not actually have 128GB of free space. The iOS operating system and essential pre-installed apps take up about 15GB to 20GB. Additionally, you will likely download at least 30GB worth of apps (Spotify, Instagram, WhatsApp, banking apps, etc.).
This means your usable space for photos and videos is significantly lower than the number on the box.
Average Photo Sizes
Modern iPhones shoot in HEIC format, which is very efficient. We will calculate based on an average size of 4 MB per photo (which accounts for a mix of standard photos and Live Photos) and 150 MB per minute of 1080p video.
128GB iPhone
Usable space for media: ~75 GB
This is the base model. It is perfect for people who use iCloud for backup and do not store everything locally.
- Photos only: ~18,000 photos
- Mixed Use (Real World): ~10,000 photos and 3 hours of video.
256GB iPhone (The Sweet Spot)
Usable space for media: ~200 GB
For 80% of users, this is the perfect size. It allows you to travel, take tons of videos, and not worry about deleting things immediately.
- Photos only: ~50,000 photos
- Mixed Use (Real World): ~30,000 photos and 10 hours of video.
512GB iPhone
Usable space for media: ~450 GB
This is for power users, content creators, and digital hoarders. If you shoot video in 4K resolution at 60fps, you need this tier.
- Photos only: ~110,000 photos
- Mixed Use (Real World): ~60,000 photos and 25 hours of video.
1TB iPhone
Usable space for media: ~940 GB
You only need a 1TB iPhone if you are a professional videographer shooting ProRes video. ProRes files are so massive that one minute of video can take up 6 GB. For regular photography, 1TB is overkill.
- Photos only: ~235,000 photos
- Mixed Use (Real World): ~100,000 photos and 50+ hours of standard video.
How to Survive on a Smaller Capacity
If you bought a 128GB phone and are constantly hitting the storage limit, you do not necessarily need to buy a new phone. You just need better habits.
- Turn on "Optimize iPhone Storage" in iCloud settings to keep high-res files in the cloud.
- Clear out your messaging app caches.
- Use Swipe Photo Cleaner once a month. The average person takes 5 photos to get one good selfie. By quickly swiping through and deleting the 4 bad outtakes, you can comfortably live on a 128GB phone for years.