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The Gialer 4-in-1 Smart SIM Card Adapter is a compact, lightweight tool designed for professionals who need to read and write multiple SIM card sizes (Full, Mini, Micro, Nano). Supporting 1.8V, 3V, and 5V smart cards and compliant with ISO 7816 standards, it ensures seamless compatibility with a wide range of devices and card readers. Perfect for managing legacy and modern SIM cards with ease, this adapter is a must-have for tech-savvy managers and mobile professionals looking to stay ahead.










| ASIN | B09CYBHMK5 |
| Best Sellers Rank | #60,113 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #88 in Cell Phone SIM Card Tools & Accessories |
| Brand | Gialer |
| Cellular Technology | LTE |
| Customer Reviews | 3.8 3.8 out of 5 stars (21) |
| Item Dimensions L x W | 2.56"L x 2.13"W |
| Item Weight | 10 Grams |
| Manufacturer | Gialer |
| Mfr Part Number | 4IN1CARDADAPTER |
| Number of Items | 1 |
| Service Provider | Global |
| UPC | 758226679738 |
| Warranty Description | Gialer |
B**.
Simply works - Works Well with SIM Card Reader/Writer
Good day! This product works quite well and performs as expected. All for under ~$13 — definitely good value for the money. I use it to read legacy SIM cards and retrieve information, which works perfectly. Plug and play: Simply insert your SIM card into the appropriate slot, then plug this Adapter into Reader/Writer. So, keep in mind that you will also need a SIM card reader/writer, compatible software, and a SIM card to read/write. By itself, without these, this item is essentially useless. These additional items are not included and must be purchased separately (or you can grab an entire kit). I’ve also included photos showing how the reader looks with the SIM card adapter installed, which may help others understand the setup.
S**O
Not what is shown
It shows a piece where it slides into..I got nothing. Just this.
R**N
Parts missing
The usb adaptor was missing completely
R**.
Works as intended.
Works well with a card reader. Used this to write new eSIM profiles to an eSIM adapter card.
M**M
Works, but a little too short for the built-in reader in my Thinkpad
For most external card readers I imagine this works great, however it's a little bit (about 2.5 mm) too short to work in the card reader built into my Thinkpad because the full-size card reader slot interferes with my laptop's case.
T**L
Slick and robust multi-form factor reader
This adapter pairs perfectly with the Gialer reader. I tested every form-factor offered by this adapter and all worked! It even works with pcsc tools on Linux, plus it has raw APDU support. Perfect for SIM card hacking.
T**S
Without some form of direction to show you what you're doing it's basically junk.
There's no directions or anything that shows how to operate this thing is basically worthless.
W**G
Works great, but full size adapter slot seems redundant, adding bulk and weight.
This adapter is well made, but I don't know how long the contact points will last. For the price though, I can't complain. It works as expected.
Trustpilot
2 days ago
3 weeks ago