Can be a bit tricky with some phones but I got the hang of it.

I was a bit nervous ordering these adapters because I was afraid that if they didn't fit, they could jam inside my phone and/or damage something.

As I placed the SIM and adapter together and slid them into the phone the nanoSIM fell out the tiniest bit and caused the adapter to catch on the inner workings on the hardware of the phone

It was a little bit thick and difficult to slide in, and take out; had to use a a small tool to push it in and push it out.

Feeling a bit too thick, but works well

Pulling the sim was a bit difficult as the adapter had some how partially separated from the card

I applied a tiny bit of Break Free CLP (doesn't melt plastic and rubber stuff like WD-40) on the back side (plastic side) of the NanoSIM with a cotton swab before I put it in the adapter.

With the tape and the tight tolerances, it was a bit difficult to

I was a little bit hesitant to switch over to Android

I was blessed with an amazing clerk at T-Mobile who persevered.

The Nano to Micro SIM adapter worked exactly as intended for my US Mobile SIM card with my Moto E (2015).