Modular mobile phones are going to become a thing. We have already covered a couple of them here in the past. The RePhone is a cool kit that lets you create your own phone with modules and customizable enclosures. There are 3 RePhone kits available: RePhone Core Module GSM + BLE, RePhone Core Module 3G and RePhone kit Create.
You get various modules to put your phone together. The system is plug and play. You can use your RePhone to make calls, send messages, and play music. This kit could prove useful for students, educators, and anyone interested in learning about the internet of things. More information is available on Kickstarter.