We’re big fans of OpenSignal, the London-based startup that creates maps of mobile phone network coverage based on information crowdsourced from smartphone users. OpenSignal has emerged as one of the biggest independent sources of data on the speed and coverage of mobile phone carriers around the world. Rather than relying on coverage maps provided by networks themselves, OpenSignal gathers this information directly from users and opens it to anyone, so they can see for themselves which ones offer the best coverage where they are. Up until last April, OpenSignal garnered the chunk of its data from Android users only, but...
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