Techkey
Techkey MFi Certified USB 3.0 Flash Drive 512GB for iPhone
Bottom line: The Techkey MFi Certified USB 3.0 Flash Drive 512GB for iPhone ($62.98 on Amazon as of 2026-10-21 14:15 UTC): 512GB in a keychain-sized stick — full camera roll offload, no iCloud subscription.
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*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
Pros & Cons
Pros
- ✓ 512GB in a keychain-sized stick — full camera roll offload, no iCloud subscription
- ✓ USB 3.0, Lightning, and USB-C in one body covers iPhone, Android OTG, PC, and Mac
- ✓ MFi certified, so iOS updates are far less likely to break Lightning recognition
- ✓ Touch ID or passcode encryption on the whole drive, or on individual files
Cons
- ✗ Price, stock, shipping and returns are set by the retailer and may have changed since this page was last updated
Manufacturer description
The Techkey MFi Certified 512GB flash drive is built for iPhone and iPad owners who keep hitting the storage wall but do not want to pay monthly for iCloud. Its 3-in-1 body carries USB 3.0, Lightning, and USB-C connectors, so the same stick moves photos and video between an iPhone, an OTG-capable Android phone, a Windows 7-or-newer PC, and a Mac running macOS 10.6 or later. On iOS you install the free U-Disk app and tap once to back up your camera roll, videos, and contacts; Android and PC users plug in and drag files with no app at all. The app also shoots straight to the drive, auto-saving…
SpecPicks Verdict
SpecPicks scored Techkey MFi Certified USB 3.0 Flash Drive 512GB for iPhone using a rating × review-volume × price-fit model applied to published specs and reviews across the external storage category. Techkey's external storage lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.
Common buyer scenarios for external storage of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.
Frequently Asked Questions
Do I need an app to use this with my iPhone?
Yes. iOS requires the free U-Disk app for backup, playback, and encryption. Android OTG phones and Windows or Mac computers read the drive directly with no app installed.
Which devices and operating systems does it work with?
Techkey lists iOS 12.1 and above, OTG-capable Android phones, Windows 7 and newer PCs, and Macs on macOS 10.6 or newer, using the Lightning, USB-C, and USB 3.0 connectors on the drive.
Can I play movies straight off the drive without copying them first?
Yes. The listing describes on-the-go playback of stored movies and music through the app, so you can watch from the drive while traveling instead of filling your phone.
Is my data protected if I lose the drive?
The U-Disk app lets you enable Touch ID or a passcode to encrypt the entire drive, or encrypt specific files only. Set that up before you start carrying sensitive backups.
Key Features
- 【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 512GB capacity, easily free up space on your device.
- 【512GB 3-in-1 Lightweight and Compact Memory Stick】The flash drive has USB/Lightning/Type C interfaces, 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, 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, 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, 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.
Full Specifications
| Brand | Techkey |
|---|---|
| Color | Black |
| Read Speed | 40 megabytes_per_second |
| Unit Count | 1 Count |
| Write Speed | 80 MB/s |
| Connectivity | USB |
| Model Number | 641837950566 |
| Compatibility | PC, Android, iOS, Mac |
| Special Feature | Wear Resistant |
| Flash Memory Type | Lightning/Type-C/USB |
| Compatible Devices | Android, PC, Smartphone, iPad, iPhone |
| Hardware Interface | Lightning |
| Additional Features | Wear Resistant |
| Connectivity Technology | USB |
| Memory Storage Capacity | 512 GB |
| Item Dimensions D x W x H | 0.07"D x 3.94"W x 0.07"H |
| Hardware Connectivity Technology | USB Type A |
| Full listing title | MFi Certified USB 3.0 Flash Drive 512GB for iPhone, 3in1 External Memory Photo Keeper Storage Stick for Picture/Video/Data Saver/Backup, High Speed Thumb/Jump/Hard Drives for iPad/Android/PC (Black) |
Ready to buy?
MFi Certified USB 3.0 Flash Drive 512GB for iPhone, 3in1 External Memory Photo Keeper Storage Stick for Picture/Video/Data Saver/Backup, High Speed Thumb/Jump/Hard Drives for iPad/Android/PC (Black) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.
*Price sourced from Amazon.com. Last updated 2026-10-21. Price and availability subject to change.
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