The iPhone 4s and WP micro SIMs are the same. I put a SIM from a Lumia 900 directly into my iPhone and it fit perfectly. I even was able to connect to the AT&T network. Unfortunately I couldn't authenticate and use my Sprint iPhone on AT&T even though my iPhone is SIM-unlocked due to Apple's restrictions. But it fit!
The iPhone 4s and WP micro SIMs are the same. I put a SIM from a Lumia 900 directly into my iPhone and it fit perfectly. I even was able to connect to the AT&T network. Unfortunately I couldn't authenticate and use my Sprint iPhone on AT&T even though my iPhone is SIM-unlocked due to Apple's restrictions. But it fit!
The Lumia 900 does, but Samsung Focus Flash doesn't use micro sim.
Bookmarks