Here's how to check your cellular data usage on an iPhone, and find specific readings for and manage each app's data.
It’s a good idea to turn off data roaming on your iPhone if you want to avoid using data while traveling internationally.
Turning your phone's connection off and then back on is the quickest and easiest way to try and fix your signal woes. If you're moving around from one location to another, toggling Airplane mode ...
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