New research has uncovered the worst networks in Scotland for overall performance.
A report by analytics firm RootMetrics found that 02 was the poorest performing network in the second half of 2015.
The study, which looked at all the ways we use our mobile phones, including for calls, texts and mobile internet, collected over 870,000 samples during the second half of 2015.
EE, the merger of Orange and T-Mobile, was found to be the top-performing operator in the Scotland, England and Northern Ireland.
The network was rated for its overall performance, network speed and mobile internet, calls and texts, across the UK.
However, Three was found to be most reliable network across the country.
Despite coming in third place for speed and second place for text, 02 failed to impress in their overall performance.
Vodafone claimed second place for network speed but only ranked third for overall performance.
In order to complete the study, RootMetrics collected 874,586 samples and drove 23, 881 miles - the equivalent to driving from London to Edinburgh more than 57 times. Tests were conducted while driving, at stationary outdoor locations and at 1,426 indoor locations.
Scott Stonham, RootMetrics General Manager of Europe said: “EE continues to provide the best mobile performance across the UK, but we’re seeing some of the other operators making good improvements across all the different ways we use our mobile phones.
“Choosing the mobile operator that’s right for you is not one-size-fits-all.
“While some people care most about fast mobile internet so they can watch videos or download music without delay, others just want to know that they can reliably make a call or send a text. Consumers can use this report to make informed decisions based on where they live and how they tend to use their phone.”