eSIM Troubleshooting Guide 2026: Fix Common eSIM Problems on iPhone and Android
Using an eSIM while traveling is usually simple and instant but occasionally things do not work as expected. If your eSIM is not connecting, shows no signal, or mobile data is not working after landing, this eSIM troubleshooting guide will help you fix the most common issues on both iPhone and Android. Most problems are solved in under 2 minutes by following these steps in order.
eSIM Troubleshooting: Most Common Problems
- eSIM installed but no internet connection after landing
- No signal or “No Service” message on screen
- Mobile data not working or very slow
- eSIM not activating after arrival in destination country
- eSIM not showing on phone or disappeared after restart
- eSIM works in one country but not another on a multi-country plan
The good news: over 90% of eSIM issues are configuration-related, not technical failures. Follow the steps below for your specific problem and your eSIM should be working within minutes.
Problem 1: eSIM Installed but No Internet Connection
This is the most common eSIM troubleshooting issue. Your phone shows the eSIM is installed but you cannot load any webpage or app. The cause is almost always one of three things: the wrong SIM is set as data line, data roaming is disabled, or mobile data is turned off for the eSIM.
Fix on iPhone
- Go to Settings > Cellular
- Select your Revo eSIM under Cellular Plans
- Make sure Turn On This Line is enabled (green)
- Enable Data Roaming this is the most common fix and is required even on travel eSIM plans
- Go back to Cellular and confirm Cellular Data is set to your Revo eSIM, not your home SIM
Fix on Android (Samsung)
- Go to Settings > Connections > SIM card manager
- Select your Revo eSIM and confirm it is active
- Enable Mobile data and Data roaming for the eSIM line
- Go to Mobile networks > Data roaming and set to Allow
Fix on Android (Google Pixel and others)
- Go to Settings > Network & internet > SIMs
- Select your Revo eSIM
- Enable Mobile data and turn on Roaming
Problem 2: No Signal or “No Service” After Landing
If your phone shows “No Service” or no signal bars after landing, it usually means the phone has not yet connected to a local network. This can take 1-5 minutes after landing in some countries.
eSIM troubleshooting steps for no signal
- Wait 2-3 minutes after turning off airplane mode network registration takes time in some countries
- Toggle airplane mode on and off to force a network scan
- Restart your phone completely a full restart often forces network re-registration
- Select network manually: go to Settings > Cellular > Network Selection > Manual, then choose an available local carrier from the list
- If one carrier shows No Service, try another available network from the manual list
If you are on a multi-country plan and crossing between countries, the eSIM may take 5-10 minutes to register on the new country network after a border crossing. This is normal toggle airplane mode to speed up the process.
Problem 3: Mobile Data Very Slow or Stops Working
Slow data speeds while traveling can have several causes. Here is how to identify and fix each one:
- Weak coverage area: Move to a higher floor, go outside, or move to a different area. Rural, underground, and mountain areas always have weaker signal
- Network congestion: Airports, stadiums, and tourist attractions have heavily congested networks during peak hours. Wait 10-15 minutes or move to a less crowded area
- Data limit reached: Check your remaining data balance via the link in your Revo eSIM confirmation email. On unlimited plans, speeds drop to 1 Mbps after the daily high-speed allowance is used
- Background apps consuming data: Check Settings > Cellular to see which apps are using the most data and restrict background refresh for heavy apps
Problem 4: eSIM Not Activating After Arrival
Most travel eSIMs activate automatically when you arrive in the destination country and your phone connects to a local network. If yours is not activating, work through this checklist:
- Confirm you are physically in a country covered by your plan check your plan details at revoesim.com
- Enable Data Roaming for the eSIM line (see Problem 1 steps above)
- Confirm your phone is carrier-unlocked locked phones cannot use travel eSIMs
- Restart your phone to trigger a fresh network registration attempt
- Try selecting a network manually (see Problem 2 step 4)
If activation still fails after all these steps, contact Revo eSIM support via WhatsApp available 24/7. Have your order number and device model ready.
Problem 5: eSIM Not Showing on Phone or Disappeared
If your eSIM profile has disappeared from your phone’s SIM settings:
- Factory reset or iOS update: Some major iOS and Android updates can remove eSIM profiles. Always back up your eSIM profile before major system updates
- Accidentally deleted: eSIM QR codes are typically single-use contact Revo eSIM support immediately to request a replacement QR code
- iPhone transfer: If you transferred to a new iPhone, eSIMs are not always transferred automatically. Contact support for a new QR code
Never delete your eSIM profile unless you are certain you no longer need it. Save your QR code email in a safe place throughout your trip.
Problem 6: eSIM Works in One Country but Not Another
If you are on a multi-country plan and your eSIM stops working after crossing a border, try these eSIM troubleshooting steps:
- Restart your phone if signal does not appear within 15 minutes
Using Dual SIM: Physical SIM for Calls, eSIM for Data
The most reliable setup for international travel is Dual SIM mode:
- Physical SIM handles calls and SMS on your home number. WhatsApp, iMessage, and bank SMS codes all arrive normally
- Revo eSIM handles all mobile data abroad at a fixed daily rate
This eliminates roaming charges on your home bill while keeping your number fully active. For a full guide on keeping your WhatsApp and bank SMS working, see our guide to keeping your WhatsApp number with an eSIM.
eSIM Troubleshooting: Prevention Checklist
The best eSIM troubleshooting is avoiding problems in the first place. Before every trip:
- Install your eSIM at home before traveling you need WiFi to scan the QR code
- Save your QR code email and order number somewhere accessible
- Enable data roaming for the eSIM line before your flight
- Download offline Google Maps for your destination before landing
- Confirm your phone is carrier-unlocked
For a full installation walkthrough, see our step-by-step eSIM installation guide for iPhone and Android.
Technical reference: GSMA eSIM specifications and troubleshooting standards
Still Having Problems? Contact Revo eSIM Support
If none of the above eSIM troubleshooting steps resolve your issue, our support team is available 24/7 via WhatsApp. Message us with your order number, device model, and destination country we typically resolve connection issues within minutes.