Vodafone, O2 owner Telefonica and Three will launch their own 4G services and products next year.
The trio had threatened legal action against communications regulator Ofcom over its 4G auction process, which allowed EE to be the sole provider of the faster mobile service until next year.
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The world's first ever 'hole in the wall' was installed in Enfield, north London, on June 27 1967.
America says it has "identified preparations" for an attack similar to that which killed at least 86, including 30 children, in April.