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31. Open Cell ID 2G mobile coverage, 2018

2018. Collins Bartholomew Ltd. Representation of the area covered by GSM (2G) mobile communications around the world as of December 2018.

32. Open Cell ID 3G mobile coverage, 2018

2018. Collins Bartholomew Ltd. Representation of the area covered by 3G mobile communications around the world as of December 2018.

33. Open Cell ID 4G mobile coverage, 2018

2018. Collins Bartholomew Ltd. Representation of the area covered by 4G mobile communications around the world as of December 2018.