eSIM Keeps Dropping or Acting Up? A Step-by-Step Checklist

When your eSIM keeps connecting and dropping, working through it in this order — “weak-signal areas” → “automatic network selection” → “data-saver and battery-saver settings” → “network settings reset” — usually narrows down the cause. The trick is not to change everything at once, but to try each step from the top and stop as soon as you see a change. This guide lays out a simple checklist for intermittent drops, written so that first-time users won’t get lost. When you’re abroad, an unstable connection can be stressful — “what if I can’t reach anyone?” — but most drops come down to signal or settings, and you can handle them calmly by checking one thing at a time. Take a breath and work down the list from the top.

Note that Bloomy eSIM is fundamentally data-only. For a phone number, SMS, or voice calls, please plan separately — for example, a local SIM, a plan that includes a number, or app-based calling such as WhatsApp over your data connection. Connection stability and speed also depend on the local network, your area, and current congestion (as of June 2026). Plan details and supported conditions may change, so please check the latest information shown before you buy.

Common reasons an eSIM connection drops or becomes unstable

“Slow” and “dropping” look similar but have different causes. If it’s only slow, the issue is usually your remaining data or network congestion; but when the connection repeatedly connects and disconnects, it often comes down to how your device is receiving the signal or to a device setting. Figuring out which symptom is closest to yours helps you check efficiently. Here are the common causes.

Symptom	Common cause	Where to look first
Drops when you move around	Weak-signal area, indoors, underground	Check the signal indicator by a window or outdoors
Keeps losing and regaining service	Unstable automatic network selection	Switch carrier selection to manual
Stops in the background	Data-saver or battery-saver mode	Turn off Low Power / Data Saver
Unstable ever since setup	Inconsistent network settings	Reset and reconfigure settings
Only certain apps stall	Mobile data turned off for that app	Check per-app data permissions

The cause isn’t always a single thing, so from the next section we’ll work through it starting with the lightest, lowest-effort steps. If you’re unsure about the settings themselves, it helps to first review the steps in how to set up your eSIM.

Quick fixes to try first (about 30 seconds)

Before digging into settings, a few light actions often do the trick. Try them in this order.

1. Turn Airplane mode ON for 30 seconds, then OFF: this makes your device reconnect to the network.
2. Restart the device: this clears up most temporary glitches.
3. Check the signal indicator and network name: make sure you’re not out of service or connected to a different network.
4. Turn off Wi-Fi and test on the eSIM connection: switching back and forth with Wi-Fi can make things look unstable.

If it stabilizes here, the cause was temporary. If it still drops, work through it starting with “signal and location” below. For other snags — such as “restarting and Airplane mode didn’t help” or “it’s stuck mid-activation” — you’ll find a symptom-by-symptom summary in what to do when you can’t connect.

When a weak-signal area is the cause

The most common reason for intermittent drops is simply being in a weak-signal area. An eSIM connects to the internet using the mobile networks available locally, but underground, inside large buildings, in mountainous areas, or in the outskirts, the signal weakens and the connection keeps grabbing and releasing service. This isn’t a fault with your device or eSIM — it’s a temporary effect of the signal environment in that spot.

• Move near a window or outdoors and see whether the signal indicator recovers
• The signal changes easily while moving (train, bus, car), so re-check once you’ve stopped
• Signal can struggle to reach lower floors or interior rooms of a hotel, so try a common area or a higher floor too
• If other people’s phones are also unstable in the same place, it’s likely the area’s congestion or signal conditions

If it stabilizes when you change location, the problem isn’t your device or settings. Note that if the connection is simply slow, the cause is different — for points about data usage and congestion, please also see other articles or our FAQ.

Review the automatic network selection

Most devices are set to automatically choose the network with the best signal. However, in places where several networks reach you, automatic selection can hesitate and keep losing and regaining service. In that case, try manual selection.

The general flow for manual selection

1. From “Mobile / Cellular” or “SIM” in Settings, choose your eSIM line
2. Switch “Network Selection” from “Automatic” to “Manual”
3. From the networks shown, pick one that connects stably
4. If it doesn’t work, switch back to “Automatic” and reconnect via Airplane mode

At the same time, check whether data roaming is turned on. An eSIM used while traveling is often treated as roaming, and if this is off it can be a cause of the connection dropping in and out. The exact setting names vary by device, so it’s safest to check alongside the steps in how to set up.

Where to look on iPhone vs. Android

Menu names vary by manufacturer and model, but here’s a rough guide to where to look. If you’re unsure, jotting down your device name and symptoms makes it easier when you contact support.

• iPhone: Settings → Cellular/Mobile Data → (the relevant eSIM line) → Network Selection / Data Roaming
• Android: Settings → Network & internet → SIM / Mobile network → Automatically select network / Roaming

Check whether data-saver or battery-saver settings are throttling your connection

Settings that save battery or data can quietly stop background traffic and make the connection “look like it dropped.” Check the following settings.

Setting	Effect	Recommendation
Low Power / Battery Saver mode	Limits data and updates	Turn off temporarily when unstable
Data Saver mode	Suppresses apps’ background traffic	Allow it for the apps you need
Automatic 5G/4G switching	Can be unstable at the boundary	Try locking to 4G (LTE)
Per-app mobile data	If off for an app, it won’t work	Turn it on for the apps you use

In particular, if things improve when you temporarily turn off Low Power mode and Data Saver mode, that’s your cause. You can normally leave the saver settings on, but try removing them once as a way to narrow down the issue when things are unstable. Once you’ve confirmed the improvement, allow data only for the apps you need and switch the saver settings back on — that makes it easier to balance battery life and stability.

Reset network settings (the last resort for narrowing it down)

If nothing above fixes it, try a network settings reset. This returns Wi-Fi passwords and connection-related settings to their initial state, and it’s effective when an inconsistency in the settings is the cause. It’s safest to try this last.

Before you do this: resetting erases things like your Wi-Fi passwords, so you’ll need to re-enter them. In rare cases your eSIM may also need to be set up again (reinstalling the profile), so make sure you can quickly access your QR code or setup details before you proceed. You can find your purchased eSIM details and QR from My Account.

1. First confirm you can view your eSIM details and QR in My Account
2. From “Reset” in Settings, run “Reset network settings”
3. After restarting, check whether the network appears
4. If needed, reinstall the eSIM profile and turn data roaming on

If you run into trouble setting things up again after the reset, what to do when you can’t connect has step-by-step guidance by symptom.

What to avoid when it drops, and a checklist worth remembering

Acting in a panic can make the situation harder to understand. Keeping just these points in mind will help.

• Don’t delete the eSIM profile on impulse: you’ll need to reinstall it. First make sure you can view the QR and details in My Account.
• Don’t change several settings at once: you won’t know what worked, so check one at a time.
• Narrow it down before rushing to buy a new plan while traveling: the cause is often signal or settings, so first check in the order in this article.

Here’s a simple checklist you can use before you leave or between stops.

1. Did you try toggling Airplane mode and restarting?
2. Did you check in a good-signal spot, such as by a window or outdoors?
3. Is data roaming turned on?
4. Did you temporarily turn off Low Power and Data Saver modes?
5. Did you check your remaining data in My Account?

If it still won’t work — and what Bloomy can do

If it remains unstable after the steps above, check your device’s compatibility and your plan’s conditions. If you’re unsure whether your device supports eSIM, it’s reassuring to first check via eSIM-compatible devices.

• Reconsider your destination, data amount, and duration: you can check whether a plan fits your stay on the eSIM comparison page.
• Check your remaining data: if your data runs low it stops working, so check the balance in My Account. If you’re running short, you can also top up.
• Reach out if it’s not resolved: get in touch via Contact with your symptoms and device name.

Bloomy cares about making sure first-time travelers using an eSIM abroad aren’t left stuck after purchase. The basics of setup and troubleshooting are also collected in our eSIM Guide, so put it to use as you prepare before departure.

* Connection stability and speed depend on the local network, your area, and current congestion. Plan details and supported conditions may change, so please check the latest information shown before you buy (as of June 2026). Bloomy is fundamentally data-only.