How to share eSIM data with a laptop and other phones
One eSIM in your pocket can provide data not just to the phone itself but to a laptop, a child's tablet or a parent's phone nearby, through a hotspot. That's useful when not everyone in a family or group has their own plan, or when a trip needs a laptop online and buying it a separate SIM makes no sense. Here is how to turn on hotspot on iPhone and Android, what it does to battery life, and what to watch for before a trip.
Turning on hotspot on iPhone
On iPhone, sharing is called 'Personal Hotspot': Settings → Personal Hotspot → toggle it on. The same screen shows and lets you change the network password — it's generated automatically by default, and it's worth noting down before you need to connect someone else's device.
You can connect three ways: over Wi-Fi (a laptop finds the phone's network in its list), over Bluetooth, or via a USB cable — the cable drains the phone's battery the least but needs a cord on hand.
Check on your plan's page beforehand whether it supports hotspot mode, so it isn't a surprise once you're already there.
Turning on hotspot on Android
On Android the path is usually: Settings → Network & internet → Hotspot & tethering → Wi-Fi hotspot → toggle it on and set a network name and password. The exact menu wording varies a little between phone makers, but the logic is the same everywhere.
Just like on iPhone, you can share over Wi-Fi, Bluetooth tethering or USB tethering. If you only need to connect one device nearby and want to save as much battery as possible, Bluetooth uses less power than a Wi-Fi hotspot.
What hotspot use does to your phone's battery
Sharing a connection is one of the most power-hungry things a phone can do: it keeps a mobile connection open while also broadcasting Wi-Fi for other devices, so the battery drains noticeably faster than usual. On a long road trip or between cities, it's sensible to keep the phone charging the whole time hotspot is on, rather than only once the battery is already low.
If a power bank is available, plug it in as soon as you plan to share the connection for more than half an hour — that way you won't end up with a dead phone right when you need navigation or to reach your group.
- Keep the phone plugged into power or a power bank while sharing
- For a single nearby device, Bluetooth saves more battery than Wi-Fi
- A USB cable is the most power-efficient option if you have one handy
- Lower the phone's screen brightness while it's working as a hotspot
How much data a laptop uses compared to a phone
A laptop uses data noticeably faster than a phone: the operating system pulls updates, the mail client syncs attachments, and a browser with a dozen open tabs refreshes each of them in the background. If you've never noticed how much data those things use on a phone, it becomes obvious on a laptop on the very first day of sharing.
Before sharing data with a laptop on a longer trip, it's worth turning off automatic OS and app updates on the laptop itself and switching on the browser's data saver mode if it has one — that cuts usage sharply without losing any real convenience.
Family trips: one plan across several devices
On a family trip, sharing from one phone can sometimes be more convenient than buying everyone their own plan — for example, turning on a hotspot from a parent's phone briefly for a child's tablet on a flight or a long drive, to keep them entertained with a film or a game. For steady use throughout the whole trip by several people, a separate plan on each device is usually more convenient and reliable, since you don't have to keep one phone on as a hotspot the whole time and watch its battery.
A sensible middle ground is sharing for short, situational needs — checking email on a laptop at a café, showing a map to someone else in the group — and separate eSIMs wherever several people need data at once, for extended periods.