What Does Data Saver Do? A Simple Guide for Android and iPhone Users

Handy Guide

If you’ve ever noticed your data running out faster than expected, you’ve probably wondered: what does Data Saver do and should I use it? Data Saver is a built-in feature on both Android and iPhone that helps you reduce mobile data usage without losing access to your favorite apps. For travelers, it can be a game-changer when combined with a reliable eSIM plan.

What Is Data Saver Mode?

Data Saver mode is designed to limit how much mobile data your phone uses in the background. Apps that constantly refresh — like social media, email, and cloud storage — won’t be able to use data unless you open them. This means fewer surprises on your bill and more control over your usage.

How Data Saver Works on Android

On Android devices, Data Saver restricts background data across most apps. You can whitelist specific apps (like WhatsApp or Maps) if you want them to update in real time. It also reduces the quality of streaming content to save data.

How Data Saver Works on iPhone

On iPhones, the equivalent feature is called Low Data Mode. It pauses automatic app updates, disables background refresh, and lowers streaming quality. You can enable it separately for Wi-Fi and mobile data.

Pros and Cons of Using Data Saver

Benefits for Travelers

Extends your mobile data when you’re abroad
Prevents apps from draining data in the background
Works seamlessly with international eSIM plans
Reduces costs and makes your data last longer

When Not to Use It

If you rely on real-time notifications (e.g., stock alerts, live messaging)
While downloading large files or updates
When you want the highest-quality video or audio streams

How to Turn On Data Saver

On Android Devices

Open Settings
Go to Network & Internet
Tap Data Saver
Switch the toggle to On

On iPhones

Open Settings
Go to Mobile Data > Mobile Data Options
Tap Low Data Mode to enable it

Want to go deeper? Learn how to track your iPhone data usage in real time.

Combine Data Saver with a ZIM eSIM Plan

Using Data Saver is helpful, but the best way to control your costs while traveling is to pair it with a flexible eSIM.

Reduce roaming costs

Instead of paying unpredictable carrier fees, ZIM helps you avoid roaming overcharges while abroad.

Extend your data when traveling

Data Saver makes your allowance last longer, and ZIM lets you choose the best eSIM data plan for your trip. You can even manage your data consumption with ease directly in the app.

Final Thoughts

So, what does Data Saver do? In short, it helps you stretch your data by limiting background usage and lowering streaming quality. For everyday users, it’s a simple way to prevent overages. For travelers, it’s even more powerful when paired with a ZIM eSIM plan.

Stay connected smarter, buy your ZIM eSIM today and enjoy worry-free travel.