A Raspberry Pi based Cellphone
Wirelessly control power outlets from your phone
Make your smartphone with Raspberry Pi A+
Make your phone a Raspberry Pi display
A do-it-yourself mobile phone based around a $12 GSM module
Monitor, control and manage your Raspberry Pi easily
Touchscreen Internet Radio that can be controlled with PC, Smartphone
Get connected to your Raspberry with just the help of your smartphone.
Monitor Arduino Sensor using Smartphone and ESB: IoT Tutorial
Control smart TV with your smart phone.
A Raspberry Pi powered photobooth controlled via your smartphone.
Build a Wireless Mic that transmits your voice via FM radio
Use Temboo to connect your Arduino to the cloud.
Combining Arduino and other shield modules and make a mobile phone.
Using Google Voice as a landline
Wake-up Light connected to smartphone
Geo-fence garage door using Raspberry Pi, Azure, C#, and Windows Phone
Build a simple wearable that sends some data via your phone
Make a Fisher-Price kids toy talk, just like in Toy Story 3!
Simple crypto library for IoT
Use a microphone to detect a rainy day
Lock away your tempting smartphone for a few minutes or hours
Mirror your iPhone onto a display with Airplay for the Pi
Send a notification to your phone when something moves at your home
Free drag-and-drop IoT project builder: trigger Pi tasks with a phone
Use RGB LEDs and a Bluetooth-capable Arduino
Use Homebridge to control RPi via an iPhone
Have a Raspberry Pi tether to an iPhone for internet access on the go
Turn your Chromecast device on and off from your phone
Project to build a vacuum-tube-based headphone amp for the Pi
Using headphones to send data via audio
Getting a fake payphone to work with a Raspberry Pi
Program your Pi's wireless connection from your phone
Old style analog phone turned into a voice internet search tool
Have your Raspberry Pi place phone calls and speak some data
Open your garage door using your phone
Control media playback on your Pi from a phone or a web browser