Why Android eSIM Setup Trips People Up
You've got a shiny new eSIM plan, a QR code sitting in your inbox, and absolutely no idea where to go in your phone's settings. You're not alone. Android's settings menus vary wildly between manufacturers — what's called "SIM Manager" on a Samsung is buried somewhere completely different on a Google Pixel. This guide cuts through the confusion.
We'll walk you through how to activate an eSIM on the most popular Android handsets — Samsung Galaxy, Google Pixel, and a handful of others — in plain English, with no unnecessary detours.
Step 1: Check Your Android Phone Is eSIM Compatible
Before anything else, you need to confirm your phone actually supports eSIM. Not every Android device does, and it's worth checking before you buy a plan.
Which Android phones support eSIM?
Here's a quick reference for the most common handsets:
Samsung Galaxy
- Galaxy S21, S22, S23, S24 series (all variants)
- Galaxy Z Fold 3, 4, 5, 6
- Galaxy Z Flip 3, 4, 5, 6
- Galaxy A54, A55 (select markets)
Google Pixel
- Pixel 3a and later (Pixel 3, 4, 5, 6, 7, 8, 9 series)
- Pixel Fold
- Pixel 9 Pro Fold
Other Android devices
- OnePlus 11, 12
- Motorola Razr 40 series
- Sony Xperia 1 IV and later
- OPPO Find X5, X6 series
If your phone isn't on this list, the quickest way to check is to open Settings → About phone and search for "eSIM" or "EID" (the eSIM identifier number). If you can see an EID, your phone supports eSIM.
One important caveat: some phones sold through certain carriers are locked to a single network and may have eSIM functionality disabled. If you bought your phone outright or it's unlocked, you're almost certainly fine.
Step 2: Get Your eSIM QR Code
Once you've confirmed compatibility, you need a QR code from your eSIM provider. Fuse Mobile is a UK multi-network eSIM provider that connects your phone to all four UK networks — EE, Three, Vodafone, and O2 — automatically selecting the strongest signal wherever you are.
When you sign up for a Fuse Mobile plan, you'll receive a QR code by email almost immediately. This QR code contains all the profile information your phone needs to download and install the eSIM — think of it as the digital equivalent of popping a physical SIM into your phone.
A few things to keep in mind before you scan:
- Each QR code can only be used once. Don't share it or scan it on multiple devices.
- You'll need a Wi-Fi or mobile data connection to download the eSIM profile. Use your existing SIM or home Wi-Fi for this.
- Have the QR code open on a separate screen (a laptop or tablet works well) so you can scan it with your phone's camera.
You can find your QR code and full setup instructions on the Fuse activation page.
Step 3: Activate Your eSIM — Device-by-Device Instructions
This is where Android devices diverge. Follow the section for your specific handset.
How to Activate an eSIM on Samsung Galaxy (One UI)
Samsung uses One UI, and the settings path is slightly different depending on whether you're running One UI 5 or 6 — but the steps are broadly the same.
- Open Settings
- Tap Connections
- Tap SIM manager (on older One UI versions this may say "SIM card manager")
- Tap Add eSIM or the + icon in the top right
- Select Scan QR code from service provider
- Point your camera at the QR code — your phone will detect it automatically
- Tap Confirm when prompted to download the eSIM profile
- Wait for the download to complete (usually under 30 seconds)
- Once installed, tap Switch or Set as default to make the eSIM your primary data line
eSIM setup on Samsung is generally smooth, but if the camera doesn't detect the QR code straight away, try adjusting the distance — about 20–30cm from the screen tends to work best.
After installation, you'll see the eSIM listed in SIM manager alongside any physical SIM you have installed. You can toggle between them, or set one for calls and the other for data — entirely your call.
How to Activate an eSIM on Google Pixel
Google Pixel runs stock Android, so the settings are clean and relatively straightforward.
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- Open Settings
- Tap Network & internet
- Tap SIMs
- Tap the + icon or Add SIM
- Select Download a SIM instead? at the bottom of the screen
- Tap Next
- Point your camera at the QR code
- Confirm the download when prompted
- Once installed, tap Settings next to the new eSIM and select Use SIM to activate it for data
On Pixel 8 and Pixel 9 devices, you may also see the option to enter a confirmation code manually if scanning doesn't work — useful if you're having trouble with the camera.
How to Activate an eSIM on Other Android Phones
For handsets running near-stock Android (like Nokia, Motorola, or Sony), the path is usually:
Settings → Network & internet → Mobile network → Add carrier / Download SIM
For OnePlus devices running OxygenOS:
Settings → Wi-Fi & network → SIM & network → Add eSIM
For OPPO devices running ColorOS:
Settings → Dual SIM & Mobile Data → Add eSIM
The underlying process is identical regardless of the UI — you're always looking for a "SIM manager" or "Add SIM" option, then a QR code scanner. If you're stuck, the Fuse setup guides cover additional device types with more detail.
Step 4: Set Your eSIM as the Primary Data Line
Installing the eSIM and activating it for data are two separate steps — and this is where a lot of people get confused. Your phone won't automatically route data through the new eSIM; you need to tell it to.
On Samsung:
Go to Settings → Connections → SIM manager → Mobile data and select your Fuse eSIM.
On Google Pixel:
Go to Settings → Network & internet → SIMs, tap your Fuse eSIM, and toggle Mobile data on.
On other Android devices:
The path varies, but look for Mobile data or Preferred SIM for data within your SIM settings.
Once data is routing through Fuse, your phone will automatically connect to whichever of the four UK networks — EE, Three, Vodafone, or O2 — has the strongest signal at your location. You don't need to configure anything else.
If you want to keep a physical SIM active for calls while using Fuse for data, most Android phones support this dual-SIM configuration natively. Just set the eSIM as your preferred data SIM and leave your existing SIM assigned to calls.
Troubleshooting Common eSIM Activation Issues
Most activations go without a hitch, but here are the most common snags and how to fix them.
QR code not scanning Make sure the screen displaying the QR code is at full brightness and there's no glare. Try scanning from slightly further away, or use the manual entry code if your phone offers one.
"eSIM not supported" error This usually means your handset is carrier-locked. Contact your current network to request an unlock — it's free by law in the UK once your contract is complete.
eSIM downloaded but no signal Check that you've set the eSIM as your active data line (see Step 4 above). If signal is still missing, toggle Aeroplane mode on and off to force a network refresh.
"Download failed" message This is almost always a connectivity issue. Make sure you're on Wi-Fi or have a working data connection from your existing SIM before attempting the download again.
If you're still stuck, the full eSIM troubleshooting guide walks through additional fixes.
FAQ
How do I activate an eSIM on my Android phone?
Go to Settings → Network & internet → SIMs (on Pixel) or Settings → Connections → SIM manager (on Samsung), then select Add eSIM and scan the QR code provided by your eSIM provider. Once downloaded, set the eSIM as your preferred data line.
What do I need before I can set up an eSIM?
You need three things: an eSIM-compatible phone, an unlocked handset (not carrier-locked), and a QR code from your eSIM provider. You'll also need a Wi-Fi or mobile data connection to download the eSIM profile.
Can I use an eSIM and a physical SIM at the same time on Android?
Yes. Most modern Android phones support dual-SIM functionality — one physical SIM and one eSIM simultaneously. You can assign each to different functions, for example using your eSIM for data and your physical SIM for calls.
Is eSIM setup different on Samsung compared to other Android phones?
The process is the same — scan a QR code, download the profile, set as active — but the settings path differs. On Samsung (One UI), go to Settings → Connections → SIM manager. On Google Pixel, go to Settings → Network & internet → SIMs. Other manufacturers have their own paths, but the QR code scanning step is universal.
What is the best eSIM for Android in the UK?
Fuse Mobile offers a multi-network eSIM that connects Android phones to all four UK networks (EE, Three, Vodafone, and O2), automatically selecting the strongest signal. Plans start from 5GB with no contract, and there's a 7-day free trial available.
Ready to Activate Your Fuse eSIM?
Activating an eSIM on Android takes about two minutes once you know where to look. The settings path varies by manufacturer, but the principle is always the same: find your SIM manager, scan the QR code, and set the eSIM as your data line.
If you haven't signed up yet, you can explore Fuse Mobile plans or start with a free trial — no commitment, no contract, and your QR code arrives instantly. Head to the Fuse activation page when you're ready to get started.