Quick answer: Choose a microSD card by capacity and speed class (Class 10, U1, U3, V30) that matches your use, and a USB drive by interface (USB-A, Type-C or OTG) and speed. Always buy from a trusted shop to avoid fake capacity. Junaid Telecom, Madrasa Banat Road, Chiniot, sells both at wholesale rates, even single pieces.
How much storage do I need?
Think about what you store, not what the label says.
| Use | Suggested approach |
|---|---|
| Photos, songs, WhatsApp backup | A moderate size card is plenty |
| Full HD video recording | Larger capacity and a faster class |
| 4K video, dashcam, CCTV | High capacity plus U3 / V30, built for continuous writing |
| Phone with small internal storage | Prefer a larger card, but check the maximum your phone supports |
| Documents and sharing files | A USB flash drive of any common size |
Not every phone supports every card size. Check your phone’s manual or settings for the maximum card size it supports.
What do the speed class symbols mean?
- Class 10: minimum sustained write speed suitable for Full HD video.
- UHS-I U1 / U3: U1 and U3 are minimum sustained write speeds for higher-quality video; U3 suits 4K.
- V30 and similar: video speed classes for steady recording.
- A1 / A2: app performance classes, useful if you install apps to the card.
Speed matters more for cameras and dashcams than for storing music. A fast class does not mean the card is bigger, and a big card is not automatically fast.
SD, SDHC or SDXC?
These are capacity categories. SD is the smallest, SDHC covers mid-sizes (up to 32GB), and SDXC covers larger cards. Older devices may only read SD or SDHC cards, so check compatibility if you are using an old camera or phone.
What is the difference between FAT32 and exFAT?
When you format a card or drive, you choose a file system.
- FAT32: very compatible but cannot hold a single file bigger than 4GB.
- exFAT: handles large files and is common for big cards, but older devices may not read it.
If a large video fails to copy even though you have plenty of space, FAT32 is often the reason.
How can I spot a fake-capacity card or drive?
Fake storage devices claim a large size but only have a small amount of real memory, so files vanish or become corrupted after the real space fills.
Warning signs:
- A strange, very low price for a big size (we do not quote prices, but if it looks too good to be true, be careful).
- Missing or sloppy packaging, spelling mistakes, poor print quality.
- No dealer behind the product.
- A test tool reports less real capacity than the label.
How to test: use a free tool such as H2testw on Windows or F3 on other systems to write and verify the whole card. It takes time but protects your photos.
Which USB drive type should I choose?
| Type | Good for | Notes |
|---|---|---|
| USB-A flash drive | Laptops, TVs, car stereos | The classic choice |
| Type-C flash drive | Newer phones and laptops | Plug directly into the phone |
| Dual / OTG drive (Type-C + USB-A or Micro USB + USB-A) | Moving files between phone and laptop | Your phone must support OTG |
| USB 3.0 or faster | Large files and backups | Needs a USB 3.0 port for full speed |
| USB 2.0 | Light files and documents | Slower but fine for small files |
Tips to protect your data
- Back up important photos to two places.
- Use “Eject” or “Safely remove” before pulling the drive.
- Do not fill the card to 100 percent.
- Avoid cheap card readers that heat up.
- Format the card in the device you will use it in.
- Keep drives away from heat, water and magnets.
- If the card shows an error or slows down, replace it; do not trust it with important files.
Pros and cons of microSD vs USB drive
microSD
- Pros: tiny, perfect for phones, cameras and dashcams.
- Cons: needs a reader to use on a laptop, easy to lose.
USB drive
- Pros: plug-and-play on many devices, easy to share files.
- Cons: bulkier, connector can wear out.
Where does Junaid Telecom come in?
Junaid Telecom sells memory cards and USB drives alongside its other accessories. Brands and sizes in stock change, so WhatsApp to ask what is available. Because the shop is a wholesale dealer, shopkeepers from Lalian, Bhowana, Jhang and Faisalabad can also buy in volume for their counters, and retail customers can buy a single piece at the wholesale price.
Visit Junaid Telecom
Junaid Telecom, Madrasa Banat Road, Mohalla Garah, Dhol Sikandar, Chiniot, Punjab. Daily 8:00 AM to 9:00 PM. WhatsApp 0345 7701965 (Owner) or 0348 8651965 (Staff) to check capacities and today’s wholesale rate.