If you’re buying an iPhone 15, one of the most important decisions is choosing the right storage size. Go too small and you’ll constantly be deleting stuff. Go too big and you might waste money on space you’ll never use.
This guide breaks it down simply — what each storage tier offers, who it’s best for, and why the biggest number isn’t always the smartest choice.
📱 iPhone 15 & iPhone 15 Plus: Storage Options
128GB
256GB
512GB
📱 iPhone 15 Pro & iPhone 15 Pro Max: Storage Options
128GB (Pro only)
256GB
512GB
1TB
Note: The iPhone 15 Pro Max starts at 256GB — there’s no 128GB option for that model.
128GB – The Everyday Essential
Best for:
Light-to-average users
People who stream most content (music, Netflix, YouTube)
Cloud storage users (iCloud, Google Photos)
Casual photo takers
Why it works:
Enough room for thousands of photos, core apps, and regular updates
Cheapest entry into the iPhone 15 Pro range
Works fine if you regularly back up and manage your files
🚫 Limitations: Not ideal for large video projects or people who like to keep everything offline.
256GB – The Safe Middle Ground
Best for:
Most users who take regular photos and videos
Gamers or heavy app users
People who travel and want offline media
Those planning to keep their phone for 3–4 years
Why it works:
Great balance between price and space
Handles 4K video clips, app libraries, and offline content without stress
Ideal for people who want flexibility without going overboard
🎯 Top tip: 256GB is the starting point for the iPhone 15 Pro Max, and the minimum recommended if you plan to shoot ProRes or RAW content.
512GB – The Creator’s Choice
Best for:
Content creators, photographers, videographers
People filming in 4K or using ProRes/ProRAW
Users with massive photo libraries or large app needs
Professionals using their phone for work + personal use
Why it works:
Room to create without offloading every week
Excellent for editing on the go or working offline
Long-term peace of mind, especially for business users
📸 Reality check: If you’re editing video, managing social accounts, or using your phone to create and store media, this size removes friction completely.
1TB – Built for the Power User
Available on: iPhone 15 Pro and 15 Pro Max only
Best for:
Professionals shooting daily high-res video
Remote workers using large files and creative tools
People replacing their camera + laptop with one device
Heavy media consumers who never delete anything
Why it works:
Stores hundreds of hours of 4K video and full RAW photo shoots
Allows for major app installs, backup-free use, and zero compromise
Futureproof for the long haul
💸 Heads-up: If you’re not using 300–400GB already, this may be more than you need.
Quick Comparison
- 128GB – Everyday apps, light content, cloud users
- 256GB – Most users, travellers, light creators
- 512GB – Content creators, heavy app use, hybrid work
- 1TB – Video pros, media-heavy users, no-compromise
Final Thoughts
You don’t need to max out your storage if:
You regularly back up to iCloud or Google
You stream most content
You don’t film in 4K or edit large files
But you do need more space if:
You use your phone as a camera or creative tool
You travel often or work offline
You want to futureproof your device for years of use
Whichever size fits you, get it for less.
At The Big Phone Store, we stock refurbished iPhone 15 models in all sizes — fully tested, SIM-free, and backed by a 12-month warranty.
📦 Free next-day delivery
🔋 85%+ battery health
✅ 30-day returns
💸 Prices that make sense
Choose your iPhone 15 storage based on how you live — not just how it looks on paper.
Shop smart. Shop refurbished.
