Dual SIM Switch Widget App
No further development
This project was abandoned on January 18, 2015. App stopped working properly on devices powered by Lollipop and I didn't fix it... Originally, I made this app for myself. I liked the fact many people used it, but I couldn't have committed to it.
It was designed for most dual SIM phones based on Mediatek chipsets, but not all. If it works on your dual SIM device, I'm glad.