<Tr> <Th> Location </Th> <Th> Wi - Fi </Th> <Td_colspan="3"> Wi - Fi based </Td> </Tr> <Tr> <Th> + Cellular </Th> <Td_colspan="3"> adds GPS and aGPS </Td> </Tr> <Tr> <Th> Proximity </Th> <Th> Wi - Fi </Th> <Td_colspan="3"> N / A </Td> </Tr> <Tr> <Th> + Cellular </Th> <Td_colspan="2"> Yes </Td> <Td_colspan="1"> N / A </Td> </Tr>

Kindle fire hdx 3rd generation vs 4th generation