You can assemble a rudimentary 2G cellphone at home with the RePhone Kit Create, which can also be used to make wearables and IoT devices.
The kit from Seeed Studios ships with separate modules that can be pieced together to create a 2G phone with a 1.54-in. LCD screen. Icons on the display can be used to make phone calls or send text messages.
There’s more to RePhone than being a fun device. The kit also is a small development board to make wearable and IoT devices with cellular communication capabilities.
The $ 59 kit is now shipping, and comes with a small battery and modules for a SIM card — that’s how you connect to a carrier’s network — as well as speaker, GSM, NFC and Bluetooth Low Energy. It also ships with craft paper that can be the skin of the phone.