Family Life Will 20GB last a month? Will 20GB last a month? With your 20GB of data, you'll be able to browse the internet for approximately 240 hours per month, to stream 4,000 songs online or to watch 40 hours of online video in standard definition. Related Posts:Is 15 GB of hotspot a lot?There are gay rumors of a secret marriage of Romeo Santos and his wife.There are rumors of a secret marriage of Romeo Santos and his Wife.Does MetroPCS have unlimited Internet?