These 13 operatsionok wanted to become the competitor of Apple iOS and Google Android, but a complete fiasco turned out. Symbian, Windows and even Linux

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Analysis
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Microsoft
Main activity:Communication and IT
143
Apple
Main activity:Communication and IT
145
Fujitsu
Main activity:Communication and IT
5
HP Inc
Main activity:Production of cars, equipment and vehicles
27
Cisco
Main activity:Communication and IT
51