LYCAMOBILE is making a huge change for thousands of its customers.
The operator has confirmed that its entire UK customer base will be switched over from O2's network, which Lycamobile runs off, to EE.
The change means that Lycamobile users will now have access to EE's 4G and 5G networks.
The switch has already started, and the operator says it expects to be completed in the next 24 hours.
Lycamobile said all of its customers were told by email and text message about the switch.
Millions of Android owners could slash 'vampire bills' – how to save money
But some have claimed that they weren't contacted about the switch, and had lost service completely as a result.
Writing on Twitter, one customer said: "I've had no service for three days, unable to make/receive calls and no data. I received message from you that there was be disruption, but no service at all???
Another fumed: "Since your work on your network upgrade today I've been unable to get any signal at all at my house in Chacewater, Cornwall. I hope this isn't permanent."
While a third wrote: "I've had no service for over 7hrs and counting. Missed an important job-related call as a result. It’s really sad. Do better."
Lycamobile confirmed that a few hundred customers had issues following the switch.
A spokesperson for the operator said: "The vast majority of our customers will now be receiving faster data speeds and improved services since our switch – which is something we’re already seeing via customer feedback."
Whether you're with Lycamobile or not, it's always worth checking to see if you can cut your mobile costs.
The Sun recently spoke to one bargain hunter who slashed his bill to just 1p a month.
How can I cut my mobile costs?
Switching contracts is one of the single best ways to save money on your mobile bills.
But if you can't switch mid-contract without facing a penalty, you'd be best to hold off until it's up for renewal.
Six savings challenges to take in 2023 - how you could save thousands
In the weeks before your contract is up, use comparison sites to familiarise yourself with what deals are available.
It's a known fact that new customers always get the best deals.
Sites like MoneySuperMarket and Uswitch all help you customise your search based on price, allowances and provider.
This should make it easier to decide whether to renew your contract or move to another provider.
However, if you don't want to switch and are happy with the service you're getting under your current provider - haggle for a better deal.
You can still make significant savings by renewing your contract rather than rolling on to the tariff you're given after your deal.
If you need to speak to a company on the phone, be sure to catch them at the right time.
Make some time to negotiate with your provider in the morning.
This way, you have a better chance of being the first customer through on the phone, and the rep won't have worked tirelessly through previous calls which may have affected their stress levels.
It pays to be polite when getting through to someone on the phone, as representatives are less inclined to help rude or aggressive customers.
Knowing what other offers are on the market can help you to make a case for yourself to your provider.
If your provider won't haggle, you can always threaten to leave.
Companies don't want to lose customers and may come up with a last-minute offer to keep you.
It's also worth investigating social tariffs. These deals have been created for people who are receiving certain benefits.
Both EE and Voxi offer social mobile tariffs costing between £10 and £12 a month for those on certain benefits including Universal Credit.
