Why Your eSIM Suddenly Lost Signal: Causes and Fixes (Expired or Out of Data)

Last updated: November 3, 2026

An eSIM that worked yesterday suddenly has no signal today. You can't get online, and you have no idea what happened. In most cases, this isn't a hardware fault. The plan has either reached its validity period or the data allowance has run out. This guide explains how to tell which one it is and how to get connected again (as of November 2026, these are general guidelines).

Common reasons an eSIM suddenly stops connecting

In most cases, the cause is one of these four. Start by checking which one applies to you.

The validity period has ended

Every eSIM plan has a set number of days it can be used. Once those days are up, the eSIM stops connecting, even if you still have data left. Check the number of days you selected when you bought the plan.

The data allowance has been used up

On plans with a fixed data allowance, service stops once the allowance is used. Video streaming and map apps can use data faster than you expect.

The eSIM line is turned off

If the eSIM line is switched off in your device settings, you won't be able to connect. The same applies if data roaming is off. Updates or restarts can sometimes change these settings.

Local coverage or network congestion

Signal can be weaker in mountainous areas or deep inside buildings. Network quality depends on the local network, your device, your area, and how busy the network is, so signal may return after you move to a different spot.

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How to check the cause, in order

Before you buy a new plan, check the status below. This can help you avoid spending money you don't need to.

You can check your plan length and remaining data in My Account. For device-side checks, see What to do if you can't connect.

Can you keep using an expired eSIM?

Generally, once an eSIM's validity period has ended, you can't add data to it to get it working again. It's safest to treat an expired eSIM as no longer usable.

How to reconnect with a new eSIM

If your eSIM has expired, buy a new one and set it up again. Here's the process.

1. Connect to Wi-Fi

Setup requires an internet connection, just once. Use Wi-Fi at a hotel, café, or airport. If you can't find Wi-Fi, you may need to ask someone nearby or a local business for help temporarily.

2. Buy a new plan

Choose your destination and the number of days you need, then complete the purchase. You can find a plan that matches your destination, data amount, and duration on the eSIM comparison page. Prices and terms can change, so check the current listing before you buy.

3. Tap the setup link you received

After you buy, you'll receive a setup link. Tap it once and follow the on-screen instructions to add the eSIM. When you arrive at your destination, turn on the eSIM line and turn on data roaming. For step-by-step instructions, see our setup guide.

4. Dealing with the old eSIM

An expired eSIM can stay on your device without causing any problems. When choosing a line, set the new eSIM as your "Mobile Data" line.

When you're arranging an eSIM for a family member who lives elsewhere

If a child or another family member isn't comfortable handling the setup themselves, you can buy the eSIM for them and send them the setup link. When the person can't be reached easily, this is often the fastest way to get connected.

What the buyer does

Buy the plan with your own account, then send the setup link you receive to the person by a messaging app such as WhatsApp. It's also a good idea to attach a screenshot of the setup screen, just in case.

What the recipient does

First, connect to Wi-Fi. Then press and hold the link and open it in a browser. On iPhone, use Safari; on Android, use Chrome or another browser. Opening the link inside another app can sometimes stop setup partway through, so a browser is recommended. To check whether your device supports eSIM, see the compatible devices page.

Things to know about data-only eSIMs

Bloomy eSIMs are data-only. They do not support voice calls or SMS to and from phone numbers. However, app-based calls and messages that use data, such as WhatsApp, Messenger, and FaceTime, work as usual.

If you need to receive an SMS verification code sent to a phone number, check other options before you travel, such as a local SIM card or a service that provides a phone number.

Preparing in advance to avoid losing signal

• When you buy, write down the number of days and the expiry date
• Before you leave, learn how to check your remaining data in My Account
• Agree on more than one way to contact family, such as messaging apps that work over Wi-Fi
• If you think you may have spare days, consider a slightly longer plan
• If your stay may be extended, arrange your next plan before the current one expires

When you can fix it yourself, and when to ask for help

You can probably fix it yourself if: you can check your validity period and remaining data, and you can connect to Wi-Fi. In most cases, buying and setting up a new eSIM will get you back online.

You should contact support if: you still have days and data left but can't connect, you can't log in because you didn't receive an email, or you bought a plan but can't find the setup link. In these cases, it helps to send a clear summary of your situation to support. Having the email address you used to buy and your order number makes it faster to sort out.

What Bloomy can help with

If you're looking for an eSIM for your destination, you can use the Bloomy eSIM comparison page to find a plan that matches your country, data amount, and length of stay. You can check the status of an eSIM you've already purchased in My Account. If you have questions, see our FAQ or contact page. You'll also find related guides in our eSIM guide list.

Note: Prices, terms, and supported countries may change. Please check the latest information before you buy (as of November 2026).