2-in-1 Twin-SIM Card with Auto Timer SIM Switch (13th-Generation)

Pros: Excellent option for those who need two phone numbers on the same device. Great build quality - very well finished and professional soldering on circuit board. Pretty straightforward to get it working - just cut down both SIM cards, pop them inside this gizmo and voilá. It got this auto-switiching ability so you can monitor both numbers in any timed interval between 1 to 99 minutes. Fantastic.

Cons: The "instruction" paper that comes along is written in broken 'Engrish'. TOTALLY clueless and useless (though it IS fun : ) nonetheless). Although your common sense will guide you, there are DX competitors out there with online graphical instructions to help you out. That's how I got it figured, anyway. The new menu that appears under "Settings -> Phone" is also cryptical, but read below how to set the auto-switching between numbers.

Other: Works on my iPhone (1st generation) and I can recommend for anyone with at least minimum hand skills to cut down 2 SIM cards. Be afraid, though. This is is easy, but no piece of cake.

Pros: Excellent option for those who need two phone numbers on the same device. Great build quality - very well finished and professional soldering on circuit board. Pretty straightforward to get it working - just cut down both SIM cards, pop them inside this gizmo and voilá. It got this auto-switiching ability so you can monitor both numbers in any timed interval between 1 to 99 minutes. Fantastic.

Cons: The "instruction" paper that comes along is written in broken 'Engrish'. TOTALLY clueless and useless (though it IS fun : ) nonetheless). Although your common sense will guide you, there are DX competitors out there with online graphical instructions to help you out. That's how I got it figured, anyway. The new menu that appears under "Settings -> Phone" is also cryptical, but read below how to set the auto-switching between numbers.

Other: Works on my iPhone (the 1st one, 2G) and I can recommend for anyone with at least minimum hand skills to cut down 2 SIM cards. Be afraid, though. This is is easy, but no piece of cake.

Pros: Looks good, feels good. And if it works like others say...it is good. But I didnt get that far.

Cons: Bad description. You have to puzzle a little to understand how you have to put things together. After assembling, I put it in my iPhone. It got stuck going in and I couldn´t get it out. Had to dissasemble my iPhone to get it out.

Other: Might be good...Be sure you are not afraid to disassemble your phone if necessary.