Four steps on your phone once your eSIM is installed. The third one is the one that saves you money — most guides leave it out.

On iPhone

Settings looks slightly different by iOS version, but the path is the same. Australian and UK iPhones say Mobile Data; US iPhones say Cellular.

1

Use the Katara eSIM for data

Settings › Mobile Data. Tap Mobile Data and pick the Katara line.

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‹Settings
Mobile Data
SIMs
Telstra
Primary
On ›
Katara Connect
Travel
On ›
Mobile data
Mobile DataKatara Connect ›
Allow Mobile Data Switching
Turn switching off so your phone can’t fall back to Telstra for data.
2

Roaming on for Katara

Tap the Katara line › Mobile Data Options. Switch Data Roaming on.

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‹Katara Connect
Mobile Data Options
 
Data Roaming
Voice & Data5G ›
Low Data Mode
Your eSIM needs roaming to reach the local network. It costs nothing extra — the data is already paid for.
3

Roaming off for your home SIM

Go back, tap your usual carrier, and switch Data Roaming off.

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‹Telstra
Mobile Data Options
 
Data Roaming
Voice & Data5G ›
Low Data Mode
This is the step that stops your usual carrier charging you a daily roaming fee while you’re away.
4

Give the line a name

Tap the Katara line › Mobile Plan Label. Pick something you’ll recognise.

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‹Katara Connect
Mobile Plan Label
Label
Primary
Travel✓
Business
Custom Label…Indonesia ›
Naming it after the destination makes it obvious which line is which when you land.

Install before you fly, switch on when you land. You need wifi to install, so do it at home. Your plan starts counting down the first time the eSIM connects to a network overseas — not when you install it.

On Android

Samsung wording is shown here. Pixel and other Android phones use Network & internet rather than Connections, but the toggles are the same.

1

Use the Katara eSIM for data

Settings › Connections › SIM manager. Set mobile data to the Katara line.

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←
SIM manager
SIM cards
Telstra
SIM 1
Katara Connect
eSIM
Preferred SIM
Mobile data
Katara Connect
›
Calls
Telstra
›
Leave calls on your usual SIM so you keep your number for bank codes.
2

Roaming on for Katara

Connections › Mobile networks. Switch Data roaming on with the Katara line selected.

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←
Mobile networks
Katara Connect
Data roaming
Connect to partner networks
Network mode
5G / LTE / 3G auto
›
Access Point Names
›
If a network doesn’t appear, set network mode to LTE only and try again.
3

Roaming off for your home SIM

Switch to your usual SIM at the top of the same screen and turn Data roaming off.

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←
Mobile networks
Telstra
Data roaming
Off while you travel
Network mode
5G / LTE / 3G auto
›
Access Point Names
›
Without this, your usual carrier can still charge a daily roaming fee even though you’re using the eSIM.
4

Check it’s working

Flight mode on for ten seconds, then off. Open a browser.

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←
Connections
 
Flight mode
Turn on, wait, turn off
Wi-Fi
Off
Mobile networks
›
Turn wifi off for the test, or you won’t know whether the eSIM is actually carrying the data.

Still nothing after all four? Kaya can walk you through it — she handles this every day and knows which settings hide where on which phone. Chat with Kaya or email support@kataraconnect.com.