NeeCoo Bluetooth V4.0 Dual SIM Card Adapter for iPhone SE / 4S/5/5S / 6 / 6 Plus / 6S / 6S Plus / 7 / 7plus /,iPad,iTouch Support iOS 7.0 (Golden)

Look...I buy a lot of stuff on Amazon. And I had high hopes for this product. And when I got it...I set it up exactly as instructed. But, all I get is that it doesn't work. No service. Great...back to two phones. If the seller can tell me how to get this damn thing to go from "No Service" to working, I will revise this review...but for now, I would say, stay the HECK AWAY! This product bites. Or, at least this product from this supplier...

not working

Só a bad review but I actually had no issues. I used a SIM card from ATT in my locked iPhone 6 and a SIM card from TMobile and worked fine.Took me some learning on making sure the adapter was connected to my phone via Bluetooth, but after I sorted the Bluetooth part averything worked. Would have been faster if I read instruction instead of just trying things :)I also tried with a Sim Card of another country and also worked.Things I wished it had but it doesn't: when on international trip I wish I could use the adapter for the data part, since this way I would be able to turn off roaming from SIM card in my phone and use the one from the adapter (something like a personal wifi connection with the SIM card inside of it); but for phone use is perfect, and I can always put my home SIM card in adapter and the one from country I am visiting in my phone as a workaround the data part.I am also not sure if you have a non SIM card phone carrier, if the adaprter would work due to different technology, but since it is a Bluetooth connection I think it will.Last the most important thing is to learn how to connect adapter to phone via Bluetooth to avoid frustration.