For almost everyone, it's a good idea to leave Cellular Data on. ... When Cellular Data is off and you're not connected to Wi-Fi, you can only use your iPhone to make phone calls and send text messages (but not iMessages, which use data). It's amazing that almost everything we do on our iPhones uses data!

Is cellular data supposed to be on or off?

The cellular data setting needs to be turned "on" in settings even If the plan does not include data, because Republic Wireless uses cellular data for cellular telecommunications, meaning that we route calls and messages over a data connection.

What happens when cellular data is off?

(On iPhone, tap the “Settings” icon, tap “Cellular,” then turn off “Cellular Data.” On Android, tap the “Settings” icon, tap “Network & internet,” tap “Mobile network” and turn off “Mobile data.”) After turning off mobile data, you'll still be able to make and receive phone calls and get text messages.