(S (S (S (NP (BASENP (DT Those)) (VP (VBG trying) (S (VP (TO to) (VP (VP (VB contact) (BASENP (NNS friends) (CC and) (NN family))) (PP (IN via) (BASENP (JJ mobile)))))))) (VP (VBP have) (VP (VBN struggled)))) (SBAR (IN as) (S (NP (BASENP (DT the) (JJS largest) (JJ mobile) (NNS networks)) (PRN (COMMA ,) (NP (NP (BASENP (NNP Vodafone)) (COMMA ,) (BASENP (NNP O2))) (CC and) (BASENP (NNP Orange))) (COMMA ,))) (VP (VBP have) (VP (BASENP (DT all)) (VP (VP (VP (VP (VBN suffered) (PP (IN from) (BASENP (JJ full) (NN capacity)))) (PP (IN on) (BASENP (JJ several) (NNS occasions)))) (BASENP (DT this) (NN morning))) (S (VP (VBG meaning) (SBAR (S (BASENP (NN voice) (NNS calls)) (VP (VBD failed)))))))))))) (PERIOD .))