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To find an app taking up space, open Settings > General > iPhone Storage. Check the largest entries and Apple’s recommendations, then choose whether to offload or delete an app—or free space elsewhere, such as downloaded videos, message attachments, or files. There is no single app that is responsible on every iPhone; your storage screen shows what is using space on your device.
Find what is using your iPhone storage
- Open Settings > General > iPhone Storage.
- Wait for the screen to load. Apple says it shows available space, storage use, and recommendations.
- Review the largest app entries and the recommendation cards. The size shown can help you decide what to review, but it does not mean all of that space is safe to remove.
An app’s storage entry can include the app itself as well as documents and data it has stored. Those documents may include content you want to keep, so check an app’s own storage options and confirm important content is synced or backed up before removing the app.
Choose between offloading and deleting an app
| Action | What happens | When it may fit |
|---|---|---|
| Offload App | Removes the app but keeps its documents and data. Its Home Screen icon remains; tap it to reinstall the app. | When you want to remove the app itself while retaining its stored data. |
| Delete App | Removes the app and its related data. | When you no longer need the app or its local data, after checking whether anything important is unsynced or unbacked-up. |
These options appear in the app’s entry on the iPhone Storage screen. Deleting is more destructive than offloading: app-related data may be lost, especially if it exists only on the phone.
Check other places you can free up space
If an app is not the main problem—or its data is important—review other local content before deleting it:
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#1 Best Overall
MFi Certified 256GB Flash Drive for iPhone iPad, Photo Stick for External Memory Storage, Easily Back Up and Save Photos Videos, USB Memory Stick Thumb Drive for iPhone/iPad/Android/PC (Blue)
- 【MFi Certified Flash Drive, Wide Compatibility】This 256GB USB flash drive for iPhone is officially MFi certified, ensuring full support for all iOS devices (iOS 12.1 and above). NOTE: For iPhone users, please download the required app from the App Store before use, while Android only needs to open your OTG function.
- 【Large Storage Capacity, Backup Easily】With 256GB/512GB of additional storage, this iPhone flash drive perfectly addresses memory shortages on your phone or iPad. You can share your special moment with your friends and family on your social media with just one-click. Note: The displayed capacity may differ from 256GB/512GB due to different calculation methods between storage manufacturers (1GB=1000MB) and computers (1GB=1024MB).
- 【Multi Port Design, Plug and Play】Equipped with USB/Lightning/Micro USB/Type-C (with independent adapter), this usb storage flash drive supports a variety of devices for effortless plug and play operation. Quickly transfer data between different devices, significantly enhancing convenience. Please note: Type-C adapter is shipped randomly in black or silver.
- 【High Speed Transfer, Save Your Time】With read speeds up to 40MB/s and write speeds up to 25MB/s, this thumb drive is more efficient than traditional USB drive. Allowing you to quickly transfer files, photos, and videos, which help you save time and focus on the things you like. Note: Actual speeds may vary based on device and processor performance.
- 【Stylish, Portable, and Secure】With a compact and stylish design, this flash drive for iPhone is available in blue, pink, black and gold, making it easy to carry around. The built-in encryption option allows you to set a password via the APP to secure your personal files, photos and videos, ensuring you have peace of mind when storing and accessing your precious memories while traveling or for daily use.
- Downloaded videos: Remove offline downloads you no longer need from TV or streaming apps. You may be able to download them again later.
- Messages: Review large conversations and attachments, and remove items you no longer need.
- Files: Look for documents stored on the device that can be deleted or moved elsewhere.
- Photos and videos: If you want to keep them, back them up to iCloud or another destination and confirm the backup before removing local copies from the iPhone.
- Unused apps: Consider offloading apps you rarely use if you want to retain their documents and data.
Turn on automatic offloading for unused apps
To have iPhone remove unused apps automatically when storage is low while keeping their data, go to Settings > Apps > App Store and enable Offload Unused Apps. Apple describes this as an automatic way to remove unused apps while retaining their data. The app can be reinstalled when needed.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What clearing a cache can—and cannot—do
Cache files are temporary or recoverable data that apps may store. Apple’s developer documentation says cache-folder files can be purged automatically when device storage is low. That does not make all app documents and data disposable, and it does not provide a universal iPhone control to clear every app’s data.
Rank #2
USB Flash Drive for iPhone/iPad, MFi Certified 3in1, 256GB, Silver
- MFi Certified Multi-function Flash Drive: This flash drive is MFi certified, high quality and excellent performance, allowing you to store your data more securely without worrying about data loss. Made of high quality metal material and advanced chip technology, it has excellent dustproof, drop-proof and anti-magnetic performance. The flash drive has a 256GB capacity, easily free up space on your device
- 256GB 3-in-1 Lightweight and Compact Memory Stick: The flash drive has USB/Lightning/Type C interfaces for USB/Usb C pcie port card compatible with iOS devices with iOS12.1 and above / OTG Android phones / PC with Win7 and above / MAC devices with MAC10.6 and above, convenient for data transfer between different devices. It is also lightweight and compact, easy to carry around and keep your data at your fingertips. Accompanied by a uniquely designed keychain, the product is more convenient for you to carry
- One Click Backup and One Click Sharing: You can easily backup photos, videos, and phonebook to your phone with just one click via the APP, freeing up space on your mobile device without using a data cable or iCloud. You can also share photos/videos/files from the flash drive directly to social media (Facebook, etc.) for easy sharing with family and friends. (Tips: iOS devices need to download the "U-Disk" APP when using flash drive; Android and PC devices do not need to download APP)
- Automatic Storage and On-the-Go Playback: All photos and videos captured by the in-app camera are automatically saved to U-Disk albums in real time and stored in a folder for easy editing and searching. Store your favorite movies and music on the flash drive, you can enjoy the stored movies or music anytime and anywhere when you are traveling or on a business trip
- High Speed Transfer and Data Encryption: This flash drive has high read/write speed, so you can enjoy the convenience of fast backup and save time. The flash drive uses stable APP software, you can choose to turn on Touch ID/Passcode to encrypt the whole flash drive, or you can choose to encrypt specific files to protect your data, so you can enjoy a more convenient and secure file storage experience
For a specific app, check whether it has its own storage-management option before considering deletion and reinstallation. Deleting removes the app and related data, so local or unsynced content could be lost. A cache cleanup also has no guaranteed space-saving amount; the result depends on what that app has stored.
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Rank #4
SANDISK 256GB Phone Drive for iPhone USB-C Lightning Dual Connector
- Made For iPhone Certified. Compatible with iPhone 15 or newer (USB-C) and iPhone 14 or older models (Lightning)(2). When connected via USB-C, works with SANDISK Memory Zone app or Apple iOS Files app—automatic backup requires SANDISK app(3). Lightning connection requires the SANDISK app for copy and backup functions(3).
- SANDISK Memory Zone App Required. Download the app(3) from the App Store and update firmware if prompted to optimize your file management experience or jump to the iOS Files app from the home screen.
- Free Up Space. Seamlessly transfer files to your SanDisk Phone Drive, then easily delete them from your phone to reclaim valuable storage(3).
- Smarter Backups. Choose manual or automatic backup within the SANDISK Memory Zone app with real-time progress tracking, background multitasking, and partial backup support when storage is limited(3).
- Reliable Transfers. Move content between your USB-C or Lightning iPhone, iPad Pro, Mac, and other compatible devices(2).
Rank #3
Sale
Lexar D40E 128GB Dual USB 3.2 Gen 1 Type-C Jump Drive, Champagne Silver
- USB-C 2-in-1 storage OTG: The Lexar JumpDrive Dual Drive D40E features USB Type-A and Type-C connectors in a slim, portable form factor for easy device compatibility
- Transfer speeds up to 100MB/s: Based on internal testing, performance may vary depending upon the host device, interface, and usage conditions. 1MB=1,000,000 bytes
- Plug and Play: Widely compatible with USB Type-C smartphones, tablets, laptops, Macs, and traditional Type-A devices, no software installation required. The 360° swivel design allows for easy switching between connectors without the hassle of losing a cap
- Durable & Compact: The Lexar D40E USB memory stick features a metal enclosure, withstands temperatures from 0° to 50° C (32°F to 122°F), and is lightweight at 26g with dimensions of 70.4 x 16.9 x 11.7mm
- Security & Warranty: Securely protects files using an advanced security software solution with 256-bit AES encryption. Backed by a Lexar 3-year limited warranty
Apple guidance
- Apple: How to check the storage on your iPhone and iPad — storage recommendations and options for reviewing apps and other content.
- Apple Support: Offload unused apps
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
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