Dual Sim Holder

[TheMadBrewer]

I wish you luck -- space is so tight in a RAZR. All the ones I've seen for the RAZR involve cutting the SIM.

You might look at getting an inexpensive (and larger phone) that:

will hold dual SIMs without cutting;

that you are sure is 900/1800 and

you don't mind if gets lost or broken or stolen