iCoolkit Nano to Micro/Standard SIM Card Adapter for Apple iPhone 5 4S 4G

I purchased this some time ago, and finally had a chance to try it out. I needed to put the microSIM card from my Galaxy Note 2 into a Galaxy S2 to test the S2. It took me a second to figure which way I needed to seat the SIM card in the appropriate adaptor, but once I did that, I was able to put it in the S2, which had no problem seeing the SIM. The only thing that I would mention is that because the adapter surface was slippery, it was a bit hard to get a traction on the adapter when I had to remove it from the S2.

got an iPhone5 from 2-yr AT&T contract for my wife. But she wants to give the new phone to her sister, while she still uses her iPhone4. The little adapter allow us to use iPhone5 sim card in the iPhone4. It worked fine for sometime.the limitation is AT&T record/account is confused. Their record still thinks the account is iPhone5, but somehow can detect the device is actually iPhone4. Therefore, I could not upgrade online by myself data plan (iPhone5 is probably LTE/4G, while iPhone4 is 3G).We went to AT&T store. The lady was nice enough to replace an iPhone4 sim card (bigger)．so we won't need the adapter anymore. but it was good help.

At the recommendation of the T-Mobile salesperson I purchased this adapter so I could easily move my iPhone 5's nano SIM card to my HTC One. Product works as advertised. I inserted the nano SIM into the adapater and the adapter into the HTC One. Everything worked perfectly for a little while.After a few days I began to notice a delay in receiving text messages. People would send me text messages and I wouldn't get them until hours later. I can't say this is directly related to the product but more likely related to using an adapter for the nano SIM. While the product works as advertised (I'm generally happy with the product itself) I think using an adapter made my phone less reliable.HERE IS THE IMPORTANT PART: I managed to get the whole assembly stuck in the HTC One. I was unable to remove the tray with the adapter inside. It was stuck. I do not attribute this issue to the quality of this particular product. I believe using an adapter, any adapter, carries with it the risk of getting stuck in the phone. I had to carefully work the jammed assembly from the phone using one of those plastic "collar stays" found in mens shirt collars. In short I risked damage to a $600 phone in order to use my iPhone 5 SIM in my HTC One. Needless to say I have ceased using the adapters. I no longer wish to risk damaging an expensive phone for the convience of switching between phones (which I didn't see myself doing much of anyway but with a sub $2.00 price for the adapater I figured "Why not?". Now I know).All in all the product itself is what you would expect. Nice set, works as advertised, but two pitfalls to watch out for. One being a major concern.

I bought 4 of these and they were packed nicely and fit firmly in place. They are made out of sturdy plastic and the sim cards clicked in place and there is a thin film of clear plastic preventing the sim card from falling through the other side. It clicked into place on back of our phones nicely and I was able to remove them with ease. I don't know if it would be durable if you need it to constantly swtich back and forth but if you only need to switch every once in a while, this should last you a long time.

Came quicker than expected. The adapters work as expected.Note: I use these for my old phone that has a micro-sim in them. I now have phones with nano-sims and on some occasions I would prefer to carry my old beat up phone (e.g. while skiing). I put the micro-sim adapter into my old phone without a nano-sim in it. I do not know if this was an issue or not but it took some time to get the tray out of my phone. It seemed to stick. So from now on I store the adapter in my phone with a nano-sim in it (I happened to have a couple lying around), hoping that that will keep if from jamming the tray.

I had an iphone 4...now I have a 5. When I go skiing, I cannot ski with the iphone because if I fall hard, I'll destroy the darn thing...so, enter this nifty product. I can take out the SIM and put it in an adapter and use it in an old flip phone that I have. So, if I destroy the phone...who cares...just take out the SIM and put it back in the iphone...much better than breaking my iphone and having to pay a ton to get a new one.Great product...must have if you change phones when you're doing something active, at the beach, etc....

I recently sold my iphone 4s & needed to use a go phone for a while until my upgrade. This little guy prevented me from having to get on the phone with att for an hour to activate the full sized sim card that comes with the go phone. Instead, I just slid my nano sim into the adapter, & **poof**. It worked great, never had any service problems. Good product And speedy shipping too! I'd definitely recommend.

I didn't really understand this and how it worked but I figured it was so cheap what did I have to lose! So I got it took my SIM Card out and popped it into these. Really that's all there is to it. Pick the size of SIM Card you need for a specific phone and it works great! For instance I can take my SIM Card out of my iPhone 5 and put it into a dumb phone or other smart phone that uses another type of SIM Card, really great and affordable!