Lobster Mobile not working in the UK? Troubleshooting steps and when to escalate

If your Lobster Mobile SIM stops working during a UK visit, the problem usually sits with your phone’s configuration rather than the SIM itself. Lobster is a Spanish pay-as-you-go service aimed at English speakers living in Spain. When you use it in the United Kingdom, you’re roaming. That means your handset needs two things set up correctly: the Access Point Name (APN) for mobile data, and roaming permissions switched on. Most connection failures trace back to one of these two settings.

This post walks through the fixes in order of likelihood, starting with the quickest.

Does your plan allow UK roaming?

Lobster includes surcharge-free roaming across the UK and most EU countries on all its tariffs. However, a fair usage policy applies. You cannot spend more time or use more data abroad than you do in Spain over any rolling four-month window. If you breach this limit, Lobster may suspend roaming or apply charges. Check your account online or via the app to confirm you have not received a fair usage warning.

Two immediate steps often resolve temporary glitches:

• Toggle flight mode on, wait 15 seconds, then toggle it off. This forces your phone to drop the network connection and re-register with a UK mast.
• Restart your phone completely. A full power cycle clears cached network states that can block reconnection.

If neither works, move to APN configuration.

Setting the correct APN on iOS

An Access Point Name tells your phone how to route data through Lobster’s network. Without it, calls and texts may work but mobile internet will not. On iPhone or iPad:

1. Open Settings, then tap Mobile Data.
2. Tap Mobile Data Network.
3. In every field labelled ‘APN’ (there are three sections: Mobile Data, LTE Setup, and Personal Hotspot), type lobster in lowercase.
4. Leave Username and Password blank.
5. Tap the back arrow. iOS saves changes automatically.
6. If data does not connect within two minutes, restart your device.

Apple does not always refresh network settings instantly. A restart usually completes the process.

Setting the correct APN on Android

Android menu names vary by manufacturer. Samsung calls the section ‘Connections’; Google Pixel devices call it ‘Network & internet’. The core steps remain the same:

1. Go to Settings, then find Network & internet or Connections.
2. Tap SIMs or Mobile Networks, then select your Lobster SIM.
3. Tap Access Point Names.
4. Tap the + icon (or three-dot menu, then ‘New APN’).
5. Fill in exactly four fields:

• Name: Lobster Internet
• APN: lobster
• APN type: default,supl
• Leave Proxy, Port, Username, Password, and all other fields untouched.

6. Tap the three-dot menu and choose Save.
7. Return to the APN list and select the newly created ‘Lobster Internet’ profile by tapping its radio button.
8. Restart your phone.

If you see multiple APN profiles listed, ensure only the Lobster one is selected. Having two active profiles can cause conflicts.

Turn on data roaming

Even with the correct APN, your phone will not connect to a UK network unless roaming is enabled. This is a separate toggle:

• iOS: Go to Settings > Mobile Data > Mobile Data Options and switch Data Roaming on.
• Android: Go to Settings > Network & internet > SIMs, tap your Lobster SIM, and switch Roaming on.

Some Android devices also have a global ‘Data Roaming’ switch under Mobile Networks. Check both locations.

Lobster provides a SIM-based menu that can force a network refresh. On iOS, go to Settings > Mobile Data > SIM Applications. On Android, open the ‘SIM Toolkit’ or ‘Lobster Mobile’ app from your app drawer. Select Network Selection, then choose Lobster Roaming. This triggers the SIM to re-scan for available UK partner networks and can resolve stubborn connection issues.

When to contact Lobster support

If you have completed all the steps above and your service remains offline, the fault may require action from Lobster’s technical team. Have your account number and SIM serial number ready before calling.

From the UK, dial +34 711 000 711. If you are calling from your Lobster mobile (and it has voice service), dial 711. Lobster’s support hours are listed on their website.

According to Citizens Advice, technical faults are among the top three reasons UK consumers contact mobile providers. If Lobster does not resolve your issue within eight weeks, or if they send you a ‘deadlock letter’ stating they cannot help further, you have the right to escalate to an Alternative Dispute Resolution (ADR) scheme. Ofcom, the UK communications regulator, maintains a list of approved ADR providers. You can also contact the Citizens Advice consumer helpline on 0808 223 1133 for free guidance on your rights.

A note on network coverage

Lobster roams on UK networks via wholesale agreements. If you are in an area with weak signal from Lobster’s partner network, your phone may struggle to maintain a connection even with correct settings. Try moving to a different location or checking Ofcom’s mobile coverage checker online to confirm whether the area you are in has reliable 4G or 5G service from any operator. If coverage is poor across all networks, the issue is environmental rather than SIM-related.