These little-known iPhone settings allow apps to collect, track and share your data. Here's how you can turn them off to make sure your private information is always protected.

Turn Off Wi-Fi Assist to Prevent Data Spikes When your Wi-Fi signal is weak, your iPhone can automatically switch to cellular data to maintain a stable connection.

Regardless of whether you have an AT&T, T-Mobile or Verizon plan, your data is being tracked by default. Here's how to protect your privacy and turn it off.