42348
The UMTS ( 3 G ) and LTE ( 4 G ) networks of the three major cellular operators Vodafone , T-Mobile and O2 enable the use of mobile broadband applications citywide .
 Vodafone, T-Mobile, O2
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Vodafone, T-Mobile, O2