Automatically block/hold texts and calls while driving. Automatically lock your phone. Three apps available which can help out: Drive First by Sprint, DriveMode by AT&T, and Safely Go by Verizon. They can each restrict inbound phone calls to a list. They all block texts and you can customize an automatic reply if desired.
Sprint’s “Drive First” app automatically activates when the phone is in motion faster than 10 miles per hour (16 km/hr). You can still override in emergency (911) situations. Available on Google Play for Android. Compatible with Bluetooth and headsets to allow for calls. Sprint also has a website that allows parents to see what their teen is doing with their phone while driving.
Verizon’s “Safely Go” app needs to be enabled each time you will drive. Available on Google Play for Android. Can configure up to 3 “VIP Contacts” for text and calls. Can access music and navigation while locked.
AT&T’s “DriveMode” app automatically activates at 25 miles per hour (41 km/hr). Available on Google Play for Android. Can configure up to 5 numbers allowing outbound and inbound calls. Can access music and navigation while locked. By far the most popular app in terms of downloads.
You could also simply put your phone in airplane mode or do not disturb if you don’t want to use an app. The ability for the Sprint and AT&T app to automatically lock is quite appealing.