According to O2, 44% of consumers are influenced by environmental factors when purchasing a mobile phone. It said that more than 4.1 billion phones are in circulation worldwide, accounting for a combined carbon footprint over their lifetime of more than 100 million tonnes.
The scheme, which is the first of its kind in the UK, scores the handsets, taking into account the manufacturing process, raw materials used, packaging, energy efficiency, how long they last, how easy they are to use and whether they can be recycled.
Data for the ratings were voluntarily provided by the manufacturers but Apple chose not to participate in the scheme.
A spokeswoman for Apple declined to comment on why it was not taking part but pointed out that Apple has its own environmental pages on its website and a specific iPhone 4 report.
Of the 65 devices rated, Sony Ericsson Elm, which is specifically marketed on its green credentials, was ranked highest with a score of 4.3. Sony Ericsson had five handsets in the top 10.
The LG Etna and Palm Pre Plus devices had the lowest green credentials in the scheme, both scored 2.7.
Eco Rating was developed with sustainability experts Forum for Future as part of O2's wider Think Big sustainability programme to provide customers with sustainable products and services.
Peter Madden, chief executive of Forum for the Future, said: "We want to reward manufacturers who make efforts to reduce their environmental impacts and think creatively about how their devices can contribute to a better world."
|HANDSETS AND RATINGS
|Sony Ericsson Zylo||4.0|
|Sony Ericsson Xperia x 10 mini pro||4.0|
|Sony Ericsson Xperia x 10 mini||4.0|
|Palm Pre Plus||2.7|
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