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1. Global 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.

2. Global 2G network operators, 2018

2018. Collins Bartholomew Ltd. Points representing GSM (2G) mobile network operators within particular countries as of December 2018.

3. Global 3G mobile coverage, 2018

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

4. Global 3G network operators, 2018

2018. Collins Bartholomew Ltd. Points representing 3G mobile network operators within particular countries as of December 2018.

5. Global 4G mobile coverage, 2018

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

6. Global 4G network operators, 2018

2018. Collins Bartholomew Ltd. Points representing 4G mobile network operators within particular countries as of December 2018.

7. 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.

8. 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.

9. 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.

10. U.S. Telephone Area Code Boundaries, 2018

2018. Esri and TomTom North America, Inc. U.S. Telephone Area Code Boundaries represents the telephone area codes for the United States. They are also known as Numbering Plan Areas (NPA). T... Esri.