How Much Phone Storage Do I Need? 128GB vs 256GB vs 512GB
Most modern smartphones are available with several storage capacities, but choosing how much storage you actually need isn't always straightforward.
Photos, videos, apps, games and downloaded media all use your phone's internal storage, and on many Apple iPhone and Samsung Galaxy models you can't simply add more storage later.
Choosing the right capacity when you buy can therefore make a significant difference to how long your phone remains practical to use.
1. Is 128GB enough?
For many people, 128GB is a good starting point.
It can provide plenty of room for everyday apps, photographs, messages and some downloaded music or video, particularly if you also use cloud services for photos and files.
128GB may suit you if you:
- Mainly use your phone for calls, messaging, social media and browsing
- Stream most of your music and video
- Regularly back up photos and videos to cloud storage
- Don't install lots of large games
- Don't record large amounts of high-resolution video
If your current phone has 128GB and you still have plenty of free space, another 128GB phone may be all you need.
2. When should I choose 256GB?
256GB provides considerably more breathing room and can be a good choice if you intend to keep your phone for several years.
Consider 256GB if you:
- Take lots of photographs and videos
- Keep a large photo library stored locally
- Download films, programmes or music for offline use
- Install large games
- Use your phone extensively for work
- Plan to keep the device for several years
It can also be a useful middle ground if you're unsure whether 128GB will remain sufficient over the lifetime of the phone.
3. Who needs 512GB?
512GB is aimed at heavier storage users and won't be necessary for everybody.
It may be worthwhile if you regularly record large amounts of high-resolution video, maintain extensive offline photo or media libraries, install numerous large games or use your smartphone for storage-intensive professional work.
For lighter users, paying extra for 512GB that will never be used may offer little practical benefit.
4. What about 64GB phones?
You'll still find refurbished smartphones with 64GB of storage, particularly among older models.
64GB can be sufficient for relatively light use, but storage can become restrictive as apps, photographs and operating systems grow larger.
If you're buying a phone that you intend to keep for several years, consider whether the saving offered by a 64GB model outweighs the possibility of running short of storage later.
5. Check how much storage you're using now
One of the easiest ways to choose your next phone is to look at your current one.
If you're using only 50GB of a 128GB phone after several years, you probably don't need 512GB on your next device.
If your existing phone is constantly close to full, moving up to the next storage capacity can make sense.
Remember that the advertised capacity isn't all available for your own files because the operating system and other system data also require storage.
6. Can I add more storage later?
This depends on the phone.
iPhones don't support expandable microSD storage, so the capacity you choose when buying the phone is the internal capacity you'll have for the life of the device.
Support for microSD cards varies between Android phones and Samsung Galaxy generations, so don't assume that every Android phone allows its storage to be expanded.
Cloud storage can reduce the amount of local storage you need, but it isn't the same as increasing the phone's physical internal storage.
7. Think about how long you'll keep the phone
Your storage requirements are likely to increase over time.
You'll take more photos and videos, install additional apps and receive operating-system updates. That's why it's worth considering what you'll need two or three years from now, rather than choosing solely according to today's usage.
This is particularly relevant when buying a refurbished phone because a well-maintained device may remain useful for several more years.
So, how much phone storage should you choose?
For many users, 128GB offers a good balance between capacity and price. 256GB provides additional room for larger photo libraries, games, downloads and longer-term use, while 512GB is most useful for people with particularly demanding storage requirements.
There isn't a single correct capacity for everyone. Check how much storage you currently use, think about how you use your phone and consider how long you intend to keep your next device.
You can browse our refurbished and new mobile phones, including Apple iPhones and Samsung Galaxy phones, and compare the storage capacities currently available.
If you're considering refurbished, you may also find our guides to what to check when buying a refurbished phone, which refurbished iPhone to buy, and how long refurbished phones last useful.