New i-SmartSim 2008 Operator Network SIM Card Unlock Attachment

Pros: This unlock card is much cheaper than most of the other examples on the market, and is of a nice build quality. Also of interest is the fact that this has a higher compatibility rating with 3G cards, and a lot of newer phones.

Cons: Can't really think of any.

Other: If your looking to undercut the exuberant prices that most charge for an unlock SIM attachment these days you would do best to buy this as it works well, and trumps only but the very best out there.

Pros: Ease of use, just plug and play!
Fairly stable, tried 3g calls and sms. Will test out the 2g status when i am in the rail but i have total confidence it will work just fine.

Cons: The cons are also the pros. My previous hypersim has a stciky surface so it sticks the sim card to the hypersim. Its good in a way it holds on very stable but bad in a way that it prevents me from changing phone easily. This one however has no sticky surface. Its slightly harder to apply but once applied stays in place too!

Other: As the saying goes.
Cheap and Good!

Pros: Is very thin....... so doesn't get stuck like a lot of other types of sim unlocks..
Works on a lot of phones....
Very good price for a sim unlock........

Cons: Like I said before is very thin..... so might break easy.........
For my 707SC2......... required me to get a 3G sim........ it worked with my old sim just would reboot my phone on dialing out........ could be a phone issue not sure....

Other: Worth the buy to unlock your phone if it's locked to a specific carrier.

Pros: this is very thin.!
Works on all of my phones including a 3g one.
really easy to use u can sometimes just slide in and play.

Cons: Very thin might break easily.
have to cut a hole on the sim card for the chip to fit. other then that i cant think of any.

Other: This a is a great unlocker. worth buying! Buy one today!

Pros: Works on iPhone 3G on T-Mobile!
Of course, I needed to manually change the T-Mobile proxy settings to get the web to work properly. But all-in-all I am impressed. You can't beat this price, since most websites sell unlocking SIMs for four times as much.

Cons: None.

Other: Great deal for anyone who wants to unlock a mobile without worrying about finding/paying for unlock codes.
Worked on iPhone 3G!

Pros: I bought this phone for an AT&T locked Nokia 2610. I was able to use a T-Mobile sim card in it.

Cons: it listed Blackberry on there and it didn't worked.
I tried it on the 8800, 8320, 7320, and the T-Mobile MDA. None of them worked but the rest wasn't listed only the 8800.
On the 8800, it would receive signal then all of a sudden none. on the rest it would never pick up a signal or SOS.

Other: Even if the phone is listed on there, it might not work. However I am thinking that smartphones (blackberry, Windows Mobile based phones) are the ones that this statement would apply to.

Pros: this is a temporary fix for your mobile it is good quality

Cons: the sim is very thin i mean wafer thin i am from britain the price is great but these are only usefull if your planning to get rid of any old mobiles they only last for two days then they stop working

Other: great price but they are just temporary they dont keep the network opened for very long just two days

Pros: Parece mentira que pueda funcionar tan bien por este precio. La funcion 3G era lo que le faltaba a este sistema para olvidarse definitivamente de si el movil es libre o no.

Cons: Ninguno a dia de hoy. Salvo que de vez en cuando de algun fallo de contacto entre el telefono y la SIM. Pero no es nada que no se pueda solucionar con un trozo de papel o carton para hacer de cuña.

Other: Seguro que comprare muchas mas.

Pros: Worked with any phone i threw at it.
All phones were carrier locked, and had no problems recieving calls, or making them.

Cons: Failed to work with DoCoMo Phones.
My SH906i says the sim cannot be reconized when in the phone.
Tried other sims, and it still would not work with the phone

Other: Good buy.
Ebay overprices these things.
Then again, people resell them on ebay for a profit.

Pros: It is a good idea - if it works for you.

Cons: If you have a Samsung G800 on Orange mobile in the United Kingdom, then this probably will not work for you.
I got one on the strength of another seller claiming it has been tested on Samsung G800s, so it may possibly work on other operator's phones (but probably not).

Other: As I said before - it is a good idea.